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Preparing updated CR draft
authorAdrian Bateman <adrianba@microsoft.com>
Tue, 08 Jul 2014 07:39:51 -0700
changeset 368 23f90da46507
parent 367 dfb8b1fdb2ee
child 369 95cee4b2e54a
Preparing updated CR draft
media-source/media-source-cr.html
media-source/media-source-respec.html
media-source/media-source.html 
--- a/media-source/media-source-cr.html	Mon Jul 07 16:46:26 2014 -0700
+++ b/media-source/media-source-cr.html	Tue Jul 08 07:39:51 2014 -0700
@@ -281,7 +281,7 @@
     border-collapse:    collapse;
     width:  100%;
 }
-</style><link rel="stylesheet" href="mse.css">
+</style><link href="mse.css" rel="stylesheet">
   <style>/*****************************************************************
  * ReSpec 3 CSS
  * Robin Berjon - http://berjon.com/
@@ -391,20 +391,26 @@
 .section dl.attrs dd, .section dl.eldef dd {
     margin-bottom:  0;
 }
-</style><link rel="stylesheet" href="https://www.w3.org/StyleSheets/TR/W3C-CR"><!--[if lt IE 9]><script src='https://www.w3.org/2008/site/js/html5shiv.js'></script><![endif]--></head>
-  <body class="h-entry" style="" role="document" id="respecDocument"><div class="head" role="contentinfo" id="respecHeader">
+
+@media print {
+    .removeOnSave {
+        display: none;
+    }
+}
+</style><link href="https://www.w3.org/StyleSheets/TR/W3C-CR" rel="stylesheet"><!--[if lt IE 9]><script src='https://www.w3.org/2008/site/js/html5shiv.js'></script><![endif]--></head>
+  <body class="h-entry" id="respecDocument" role="document"><div class="head" id="respecHeader" role="contentinfo">
   <p>
     
-      <a href="http://www.w3.org/"><img width="72" height="48" src="https://www.w3.org/Icons/w3c_home" alt="W3C"></a>
+      <a href="http://www.w3.org/"><img width="72" height="48" alt="W3C" src="https://www.w3.org/Icons/w3c_home"></a>
     
   </p>
   <h1 class="title p-name" id="title" property="dcterms:title">Media Source Extensions</h1>
   
-  <h2 property="dcterms:issued" datatype="xsd:dateTime" content="2014-01-09T08:00:00.000Z" id="w3c-candidate-recommendation-09-january-2014"><abbr title="World Wide Web Consortium">W3C</abbr> Candidate Recommendation <time class="dt-published" datetime="2014-01-09">09 January 2014</time></h2>
+  <h2 id="w3c-candidate-recommendation-17-july-2014" property="dcterms:issued" content="2014-07-17T07:00:00.000Z" datatype="xsd:dateTime"><abbr title="World Wide Web Consortium">W3C</abbr> Candidate Recommendation <time class="dt-published" datetime="2014-07-17">17 July 2014</time></h2>
   <dl>
     
       <dt>This version:</dt>
-      <dd><a class="u-url" href="http://www.w3.org/TR/2014/CR-media-source-20140109/">http://www.w3.org/TR/2014/CR-media-source-20140109/</a></dd>
+      <dd><a class="u-url" href="http://www.w3.org/TR/2014/CR-media-source-20140717/">http://www.w3.org/TR/2014/CR-media-source-20140717/</a></dd>
       <dt>Latest published version:</dt>
       <dd><a href="http://www.w3.org/TR/media-source/">http://www.w3.org/TR/media-source/</a></dd>
     
@@ -416,16 +422,17 @@
     
     
     
+    
       <dt>Previous version:</dt>
-      <dd><a rel="dcterms:replaces" href="http://www.w3.org/TR/2013/WD-media-source-20130905/">http://www.w3.org/TR/2013/WD-media-source-20130905/</a></dd>
+      <dd><a href="http://www.w3.org/TR/2014/CR-media-source-20140109/" rel="dcterms:replaces">http://www.w3.org/TR/2014/CR-media-source-20140109/</a></dd>
     
     
     <dt>Editors:</dt>
-    <dd class="p-author h-card vcard" rel="bibo:editor" inlist=""><span typeof="foaf:Person"><span property="foaf:name" class="p-name fn">Aaron Colwell</span>, <a rel="foaf:workplaceHomepage" class="p-org org h-org h-card" href="http://www.google.com/">Google Inc.</a></span>
+    <dd class="p-author h-card vcard" inlist="" rel="bibo:editor"><span typeof="foaf:Person"><span class="p-name fn" property="foaf:name">Aaron Colwell</span>, <a class="p-org org h-org h-card" href="http://www.google.com/" rel="foaf:workplaceHomepage">Google Inc.</a></span>
 </dd>
-<dd class="p-author h-card vcard" rel="bibo:editor" inlist=""><span typeof="foaf:Person"><span property="foaf:name" class="p-name fn">Adrian Bateman</span>, <a rel="foaf:workplaceHomepage" class="p-org org h-org h-card" href="http://www.microsoft.com/">Microsoft Corporation</a></span>
+<dd class="p-author h-card vcard" inlist="" rel="bibo:editor"><span typeof="foaf:Person"><span class="p-name fn" property="foaf:name">Adrian Bateman</span>, <a class="p-org org h-org h-card" href="http://www.microsoft.com/" rel="foaf:workplaceHomepage">Microsoft Corporation</a></span>
 </dd>
-<dd class="p-author h-card vcard" rel="bibo:editor" inlist=""><span typeof="foaf:Person"><span property="foaf:name" class="p-name fn">Mark Watson</span>, <a rel="foaf:workplaceHomepage" class="p-org org h-org h-card" href="http://www.netflix.com/">Netflix Inc.</a></span>
+<dd class="p-author h-card vcard" inlist="" rel="bibo:editor"><span typeof="foaf:Person"><span class="p-name fn" property="foaf:name">Mark Watson</span>, <a class="p-org org h-org h-card" href="http://www.netflix.com/" rel="foaf:workplaceHomepage">Netflix Inc.</a></span>
 </dd>
 
     
@@ -461,7 +468,7 @@
 
     
 
-    <section id="abstract" class="introductory" property="dcterms:abstract" datatype="" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter"><h2 aria-level="1" role="heading" id="h2_abstract">Abstract</h2>
+    <section class="introductory" id="abstract" typeof="bibo:Chapter" property="dcterms:abstract" datatype="" rel="bibo:Chapter" resource="#abstract"><h2 id="h2_abstract" role="heading" aria-level="1">Abstract</h2>
       This specification extends HTMLMediaElement to allow
       JavaScript to generate media streams for playback.
       Allowing JavaScript to generate streams facilitates a variety of use
@@ -470,7 +477,7 @@
       <p>If you wish to make comments or file bugs regarding this document in a manner that is tracked by the <abbr title="World Wide Web Consortium">W3C</abbr>, please submit them via
         <a href="https://www.w3.org/Bugs/Public/enter_bug.cgi?product=HTML%20WG&amp;component=Media%20Source%20Extensions&amp;short_desc=%5BMSE%5D%20">our public bug database</a>.
       </p>
-    </section><section id="sotd" class="introductory" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter"><h2 aria-level="1" role="heading" id="h2_sotd">Status of This Document</h2>
+    </section><section class="introductory" id="sotd" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#sotd"><h2 id="h2_sotd" role="heading" aria-level="1">Status of This Document</h2>
   
     
       
@@ -480,8 +487,18 @@
           latest revision of this technical report can be found in the <a href="http://www.w3.org/TR/"><abbr title="World Wide Web Consortium">W3C</abbr> technical reports index</a> at
           http://www.w3.org/TR/.</em>
         </p>
- 
-         <p>
+        
+        <p>The working groups maintains <a href="http://w3.org/brief/Mjcw">a list of all bug reports that the editors have not yet tried to address</a>. This draft highlights some of the pending issues that are still to be discussed in the working group. No decision has been taken on the outcome of these issues including whether they are valid.</p>
+        <p>Implementors should be aware that this specification is not stable. <strong>Implementors who are not taking part in the discussions are likely to find the specification changing out from under them in incompatible ways.</strong> Vendors interested in implementing this specification before it eventually reaches the Candidate Recommendation stage should join the mailing list mentioned below and take part in the discussions.</p>
+
+        <p>The following features are <strong>at risk</strong> and may be removed due to lack of implementation.
+        </p>
+        <ul>
+          <li><code><a href="#widl-VideoPlaybackQuality-totalFrameDelay">totalFrameDelay</a></code></li>
+        </ul>
+
+    
+        <p>
           This document was published by the <a href="http://www.w3.org/html/wg/">HTML Working Group</a> as a Candidate Recommendation.
           
             This document is intended to become a <abbr title="World Wide Web Consortium">W3C</abbr> Recommendation.
@@ -497,7 +514,7 @@
             <abbr title="World Wide Web Consortium">W3C</abbr> publishes a Candidate Recommendation to indicate that the document is believed to be
             stable and to encourage implementation by the developer community. This Candidate
             Recommendation is expected to advance to Proposed Recommendation no earlier than
-            09 April 2014.
+            30 November 1899.
           
           
             All comments are welcome.
@@ -512,24 +529,12 @@
             progress.
           </p>
         
-        <p>For this specification to exit the Candidate Recommendation stage, two independent implementations as detailed in the <a href="http://dev.w3.org/html5/decision-policy/public-permissive-exit-criteria.html">CR Exit Criteria (Public Permissive version 3)</a> document will be required to pass each test in the MSE test suite to be developed by the HTML WG.</p>
- 
-
-        <p>Implementors should be aware that this specification is not stable. <strong>Implementors who are not taking part in the discussions are likely to find the specification changing out from under them in incompatible ways.</strong> Vendors interested in implementing this specification before it eventually reaches the Candidate Recommendation stage should join the mailing list mentioned above and take part in the discussions.</p>
-
-        <p>The following features are <strong>at risk</strong> and may be removed due to lack of implementation.
-        </p>
-        <ul>
-          <li><code><a href="#widl-VideoPlaybackQuality-totalFrameDelay">totalFrameDelay</a></code></li>
-        </ul>
-
-        <p>Note that this specification has a normative dependency on the name of a readable <code><a href="http://www.w3.org/TR/2013/WD-streams-api-20131105/#idl-def-Stream" class="idlType">Stream</a></code> object from the Streams API specification [<cite><a class="bibref" href="#bib-STREAMS-API">STREAMS-API</a></cite>].</p>
-    
-       
+        
+        
         <p>
           
             This document was produced by a group operating under the 
-            <a id="sotd_patent" about="" rel="w3p:patentRules" href="http://www.w3.org/Consortium/Patent-Policy-20040205/">5 February 2004 <abbr title="World Wide Web Consortium">W3C</abbr> Patent
+            <a id="sotd_patent" href="http://www.w3.org/Consortium/Patent-Policy-20040205/" rel="w3p:patentRules" about="">5 February 2004 <abbr title="World Wide Web Consortium">W3C</abbr> Patent
             Policy</a>.
           
           
@@ -552,19 +557,19 @@
       
     
   
-</section><section id="toc"><h2 class="introductory" aria-level="1" role="heading" id="h2_toc">Table of Contents</h2><ul class="toc" role="directory" id="respecContents"><li class="tocline"><a href="#introduction" class="tocxref"><span class="secno">1. </span>Introduction</a><ul class="toc"><li class="tocline"><a href="#goals" class="tocxref"><span class="secno">1.1 </span>Goals</a></li><li class="tocline"><a href="#definitions" class="tocxref"><span class="secno">1.2 </span>Definitions</a></li></ul></li><li class="tocline"><a href="#mediasource" class="tocxref"><span class="secno">2. </span>MediaSource Object</a><ul class="toc"><li class="tocline"><a href="#attributes" class="tocxref"><span class="secno">2.1 </span>Attributes</a></li><li class="tocline"><a href="#methods" class="tocxref"><span class="secno">2.2 </span>Methods</a></li><li class="tocline"><a href="#mediasource-events" class="tocxref"><span class="secno">2.3 </span>Event Summary</a></li><li class="tocline"><a href="#mediasource-algorithms" class="tocxref"><span class="secno">2.4 </span>Algorithms</a><ul class="toc"><li class="tocline"><a href="#mediasource-attach" class="tocxref"><span class="secno">2.4.1 </span>Attaching to a media element</a></li><li class="tocline"><a href="#mediasource-detach" class="tocxref"><span class="secno">2.4.2 </span>Detaching from a media element</a></li><li class="tocline"><a href="#mediasource-seeking" class="tocxref"><span class="secno">2.4.3 </span>Seeking</a></li><li class="tocline"><a href="#buffer-monitoring" class="tocxref"><span class="secno">2.4.4 </span>SourceBuffer Monitoring</a></li><li class="tocline"><a href="#active-source-buffer-changes" class="tocxref"><span class="secno">2.4.5 </span>Changes to selected/enabled track state</a></li><li class="tocline"><a href="#duration-change-algorithm" class="tocxref"><span class="secno">2.4.6 </span>Duration change</a></li><li class="tocline"><a href="#end-of-stream-algorithm" class="tocxref"><span class="secno">2.4.7 </span>End of stream algorithm</a></li></ul></li></ul></li><li class="tocline"><a href="#sourcebuffer" class="tocxref"><span class="secno">3. </span>SourceBuffer Object</a><ul class="toc"><li class="tocline"><a href="#attributes-1" class="tocxref"><span class="secno">3.1 </span>Attributes</a></li><li class="tocline"><a href="#methods-1" class="tocxref"><span class="secno">3.2 </span>Methods</a></li><li class="tocline"><a href="#track-buffers" class="tocxref"><span class="secno">3.3 </span>Track Buffers</a></li><li class="tocline"><a href="#sourcebuffer-events" class="tocxref"><span class="secno">3.4 </span>Event Summary</a></li><li class="tocline"><a href="#sourcebuffer-algorithms" class="tocxref"><span class="secno">3.5 </span>Algorithms</a><ul class="toc"><li class="tocline"><a href="#sourcebuffer-segment-parser-loop" class="tocxref"><span class="secno">3.5.1 </span>Segment Parser Loop</a></li><li class="tocline"><a href="#sourcebuffer-reset-parser-state" class="tocxref"><span class="secno">3.5.2 </span>Reset Parser State</a></li><li class="tocline"><a href="#sourcebuffer-append-error" class="tocxref"><span class="secno">3.5.3 </span>Append Error Algorithm</a></li><li class="tocline"><a href="#sourcebuffer-prepare-append" class="tocxref"><span class="secno">3.5.4 </span>Prepare Append Algorithm</a></li><li class="tocline"><a href="#sourcebuffer-buffer-append" class="tocxref"><span class="secno">3.5.5 </span>Buffer Append Algorithm</a></li><li class="tocline"><a href="#sourcebuffer-stream-append-loop" class="tocxref"><span class="secno">3.5.6 </span>Stream Append Loop</a></li><li class="tocline"><a href="#sourcebuffer-init-segment-received" class="tocxref"><span class="secno">3.5.7 </span>Initialization Segment Received</a></li><li class="tocline"><a href="#sourcebuffer-coded-frame-processing" class="tocxref"><span class="secno">3.5.8 </span>Coded Frame Processing</a></li><li class="tocline"><a href="#sourcebuffer-coded-frame-removal" class="tocxref"><span class="secno">3.5.9 </span>Coded Frame Removal Algorithm</a></li><li class="tocline"><a href="#sourcebuffer-coded-frame-eviction" class="tocxref"><span class="secno">3.5.10 </span>Coded Frame Eviction Algorithm</a></li><li class="tocline"><a href="#sourcebuffer-audio-splice-frame-algorithm" class="tocxref"><span class="secno">3.5.11 </span>Audio Splice Frame Algorithm</a></li><li class="tocline"><a href="#sourcebuffer-audio-splice-rendering-algorithm" class="tocxref"><span class="secno">3.5.12 </span>Audio Splice Rendering Algorithm</a></li><li class="tocline"><a href="#sourcebuffer-text-splice-frame-algorithm" class="tocxref"><span class="secno">3.5.13 </span>Text Splice Frame Algorithm</a></li></ul></li></ul></li><li class="tocline"><a href="#sourcebufferlist" class="tocxref"><span class="secno">4. </span>SourceBufferList Object</a><ul class="toc"><li class="tocline"><a href="#attributes-2" class="tocxref"><span class="secno">4.1 </span>Attributes</a></li><li class="tocline"><a href="#methods-2" class="tocxref"><span class="secno">4.2 </span>Methods</a></li><li class="tocline"><a href="#sourcebufferlist-events" class="tocxref"><span class="secno">4.3 </span>Event Summary</a></li></ul></li><li class="tocline"><a href="#videoplaybackquality" class="tocxref"><span class="secno">5. </span>VideoPlaybackQuality Object</a><ul class="toc"><li class="tocline"><a href="#attributes-3" class="tocxref"><span class="secno">5.1 </span>Attributes</a></li></ul></li><li class="tocline"><a href="#url" class="tocxref"><span class="secno">6. </span>URL Object Extensions</a><ul class="toc"><li class="tocline"><a href="#methods-3" class="tocxref"><span class="secno">6.1 </span>Methods</a></li></ul></li><li class="tocline"><a href="#htmlmediaelement-extensions" class="tocxref"><span class="secno">7. </span>HTMLMediaElement Extensions</a></li><li class="tocline"><a href="#htmlvideoelement-extensions" class="tocxref"><span class="secno">8. </span>HTMLVideoElement Extensions</a><ul class="toc"><li class="tocline"><a href="#methods-4" class="tocxref"><span class="secno">8.1 </span>Methods</a></li></ul></li><li class="tocline"><a href="#audio-track-extensions" class="tocxref"><span class="secno">9. </span>AudioTrack Extensions</a><ul class="toc"><li class="tocline"><a href="#attributes-4" class="tocxref"><span class="secno">9.1 </span>Attributes</a></li></ul></li><li class="tocline"><a href="#video-track-extensions" class="tocxref"><span class="secno">10. </span>VideoTrack Extensions</a><ul class="toc"><li class="tocline"><a href="#attributes-5" class="tocxref"><span class="secno">10.1 </span>Attributes</a></li></ul></li><li class="tocline"><a href="#text-track-extensions" class="tocxref"><span class="secno">11. </span>TextTrack Extensions</a><ul class="toc"><li class="tocline"><a href="#attributes-6" class="tocxref"><span class="secno">11.1 </span>Attributes</a></li></ul></li><li class="tocline"><a href="#byte-stream-formats" class="tocxref"><span class="secno">12. </span>Byte Stream Formats</a></li><li class="tocline"><a href="#examples" class="tocxref"><span class="secno">13. </span>Examples</a></li><li class="tocline"><a href="#acknowledgements" class="tocxref"><span class="secno">14. </span>Acknowledgments</a></li><li class="tocline"><a href="#revision-history" class="tocxref"><span class="secno">15. </span>Revision History</a></li><li class="tocline"><a href="#references" class="tocxref"><span class="secno">A. </span>References</a><ul class="toc"><li class="tocline"><a href="#normative-references" class="tocxref"><span class="secno">A.1 </span>Normative references</a></li></ul></li></ul></section>
+</section><section id="toc"><h2 class="introductory" id="h2_toc" role="heading" aria-level="1">Table of Contents</h2><ul class="toc" id="respecContents" role="directory"><li class="tocline"><a class="tocxref" href="#introduction"><span class="secno">1. </span>Introduction</a><ul class="toc"><li class="tocline"><a class="tocxref" href="#goals"><span class="secno">1.1 </span>Goals</a></li><li class="tocline"><a class="tocxref" href="#definitions"><span class="secno">1.2 </span>Definitions</a></li></ul></li><li class="tocline"><a class="tocxref" href="#mediasource"><span class="secno">2. </span>MediaSource Object</a><ul class="toc"><li class="tocline"><a class="tocxref" href="#attributes"><span class="secno">2.1 </span>Attributes</a></li><li class="tocline"><a class="tocxref" href="#methods"><span class="secno">2.2 </span>Methods</a></li><li class="tocline"><a class="tocxref" href="#mediasource-events"><span class="secno">2.3 </span>Event Summary</a></li><li class="tocline"><a class="tocxref" href="#mediasource-algorithms"><span class="secno">2.4 </span>Algorithms</a><ul class="toc"><li class="tocline"><a class="tocxref" href="#mediasource-attach"><span class="secno">2.4.1 </span>Attaching to a media element</a></li><li class="tocline"><a class="tocxref" href="#mediasource-detach"><span class="secno">2.4.2 </span>Detaching from a media element</a></li><li class="tocline"><a class="tocxref" href="#mediasource-seeking"><span class="secno">2.4.3 </span>Seeking</a></li><li class="tocline"><a class="tocxref" href="#buffer-monitoring"><span class="secno">2.4.4 </span>SourceBuffer Monitoring</a></li><li class="tocline"><a class="tocxref" href="#active-source-buffer-changes"><span class="secno">2.4.5 </span>Changes to selected/enabled track state</a></li><li class="tocline"><a class="tocxref" href="#duration-change-algorithm"><span class="secno">2.4.6 </span>Duration change</a></li><li class="tocline"><a class="tocxref" href="#end-of-stream-algorithm"><span class="secno">2.4.7 </span>End of stream algorithm</a></li></ul></li></ul></li><li class="tocline"><a class="tocxref" href="#sourcebuffer"><span class="secno">3. </span>SourceBuffer Object</a><ul class="toc"><li class="tocline"><a class="tocxref" href="#attributes-1"><span class="secno">3.1 </span>Attributes</a></li><li class="tocline"><a class="tocxref" href="#methods-1"><span class="secno">3.2 </span>Methods</a></li><li class="tocline"><a class="tocxref" href="#track-buffers"><span class="secno">3.3 </span>Track Buffers</a></li><li class="tocline"><a class="tocxref" href="#sourcebuffer-events"><span class="secno">3.4 </span>Event Summary</a></li><li class="tocline"><a class="tocxref" href="#sourcebuffer-algorithms"><span class="secno">3.5 </span>Algorithms</a><ul class="toc"><li class="tocline"><a class="tocxref" href="#sourcebuffer-segment-parser-loop"><span class="secno">3.5.1 </span>Segment Parser Loop</a></li><li class="tocline"><a class="tocxref" href="#sourcebuffer-reset-parser-state"><span class="secno">3.5.2 </span>Reset Parser State</a></li><li class="tocline"><a class="tocxref" href="#sourcebuffer-append-error"><span class="secno">3.5.3 </span>Append Error Algorithm</a></li><li class="tocline"><a class="tocxref" href="#sourcebuffer-prepare-append"><span class="secno">3.5.4 </span>Prepare Append Algorithm</a></li><li class="tocline"><a class="tocxref" href="#sourcebuffer-buffer-append"><span class="secno">3.5.5 </span>Buffer Append Algorithm</a></li><li class="tocline"><a class="tocxref" href="#sourcebuffer-stream-append-loop"><span class="secno">3.5.6 </span>Stream Append Loop</a></li><li class="tocline"><a class="tocxref" href="#sourcebuffer-init-segment-received"><span class="secno">3.5.7 </span>Initialization Segment Received</a></li><li class="tocline"><a class="tocxref" href="#sourcebuffer-default-track-language"><span class="secno">3.5.8 </span>Default track language</a></li><li class="tocline"><a class="tocxref" href="#sourcebuffer-default-track-kinds"><span class="secno">3.5.9 </span>Default track kinds</a></li><li class="tocline"><a class="tocxref" href="#sourcebuffer-coded-frame-processing"><span class="secno">3.5.10 </span>Coded Frame Processing</a></li><li class="tocline"><a class="tocxref" href="#sourcebuffer-coded-frame-removal"><span class="secno">3.5.11 </span>Coded Frame Removal Algorithm</a></li><li class="tocline"><a class="tocxref" href="#sourcebuffer-coded-frame-eviction"><span class="secno">3.5.12 </span>Coded Frame Eviction Algorithm</a></li><li class="tocline"><a class="tocxref" href="#sourcebuffer-audio-splice-frame-algorithm"><span class="secno">3.5.13 </span>Audio Splice Frame Algorithm</a></li><li class="tocline"><a class="tocxref" href="#sourcebuffer-audio-splice-rendering-algorithm"><span class="secno">3.5.14 </span>Audio Splice Rendering Algorithm</a></li><li class="tocline"><a class="tocxref" href="#sourcebuffer-text-splice-frame-algorithm"><span class="secno">3.5.15 </span>Text Splice Frame Algorithm</a></li></ul></li></ul></li><li class="tocline"><a class="tocxref" href="#sourcebufferlist"><span class="secno">4. </span>SourceBufferList Object</a><ul class="toc"><li class="tocline"><a class="tocxref" href="#attributes-2"><span class="secno">4.1 </span>Attributes</a></li><li class="tocline"><a class="tocxref" href="#methods-2"><span class="secno">4.2 </span>Methods</a></li><li class="tocline"><a class="tocxref" href="#sourcebufferlist-events"><span class="secno">4.3 </span>Event Summary</a></li></ul></li><li class="tocline"><a class="tocxref" href="#videoplaybackquality"><span class="secno">5. </span>VideoPlaybackQuality Object</a><ul class="toc"><li class="tocline"><a class="tocxref" href="#attributes-3"><span class="secno">5.1 </span>Attributes</a></li></ul></li><li class="tocline"><a class="tocxref" href="#trackdefault"><span class="secno">6. </span>TrackDefault Object</a><ul class="toc"><li class="tocline"><a class="tocxref" href="#constructors"><span class="secno">6.1 </span>Constructors</a></li><li class="tocline"><a class="tocxref" href="#attributes-4"><span class="secno">6.2 </span>Attributes</a></li></ul></li><li class="tocline"><a class="tocxref" href="#trackdefaultlist"><span class="secno">7. </span>TrackDefaultList Object</a><ul class="toc"><li class="tocline"><a class="tocxref" href="#constructors-1"><span class="secno">7.1 </span>Constructors</a></li><li class="tocline"><a class="tocxref" href="#attributes-5"><span class="secno">7.2 </span>Attributes</a></li><li class="tocline"><a class="tocxref" href="#methods-3"><span class="secno">7.3 </span>Methods</a></li></ul></li><li class="tocline"><a class="tocxref" href="#url"><span class="secno">8. </span>URL Object Extensions</a><ul class="toc"><li class="tocline"><a class="tocxref" href="#methods-4"><span class="secno">8.1 </span>Methods</a></li></ul></li><li class="tocline"><a class="tocxref" href="#htmlmediaelement-extensions"><span class="secno">9. </span>HTMLMediaElement Extensions</a></li><li class="tocline"><a class="tocxref" href="#htmlvideoelement-extensions"><span class="secno">10. </span>HTMLVideoElement Extensions</a><ul class="toc"><li class="tocline"><a class="tocxref" href="#methods-5"><span class="secno">10.1 </span>Methods</a></li></ul></li><li class="tocline"><a class="tocxref" href="#audio-track-extensions"><span class="secno">11. </span>AudioTrack Extensions</a><ul class="toc"><li class="tocline"><a class="tocxref" href="#attributes-6"><span class="secno">11.1 </span>Attributes</a></li></ul></li><li class="tocline"><a class="tocxref" href="#video-track-extensions"><span class="secno">12. </span>VideoTrack Extensions</a><ul class="toc"><li class="tocline"><a class="tocxref" href="#attributes-7"><span class="secno">12.1 </span>Attributes</a></li></ul></li><li class="tocline"><a class="tocxref" href="#text-track-extensions"><span class="secno">13. </span>TextTrack Extensions</a><ul class="toc"><li class="tocline"><a class="tocxref" href="#attributes-8"><span class="secno">13.1 </span>Attributes</a></li></ul></li><li class="tocline"><a class="tocxref" href="#byte-stream-formats"><span class="secno">14. </span>Byte Stream Formats</a></li><li class="tocline"><a class="tocxref" href="#examples"><span class="secno">15. </span>Examples</a></li><li class="tocline"><a class="tocxref" href="#acknowledgements"><span class="secno">16. </span>Acknowledgments</a></li><li class="tocline"><a class="tocxref" href="#revision-history"><span class="secno">17. </span>Revision History</a></li><li class="tocline"><a class="tocxref" href="#references"><span class="secno">A. </span>References</a><ul class="toc"><li class="tocline"><a class="tocxref" href="#normative-references"><span class="secno">A.1 </span>Normative references</a></li><li class="tocline"><a class="tocxref" href="#informative-references"><span class="secno">A.2 </span>Informative references</a></li></ul></li></ul></section>
 
 
-    <section id="introduction" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-      <!--OddPage--><h2 aria-level="1" role="heading" id="h2_introduction"><span class="secno">1. </span>Introduction</h2>
+    <section id="introduction" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#introduction">
+      <!--OddPage--><h2 id="h2_introduction" role="heading" aria-level="1"><span class="secno">1. </span>Introduction</h2>
       <p>This specification allows JavaScript to dynamically construct media streams for &lt;audio&gt; and &lt;video&gt;.
         It defines objects that allow JavaScript to pass media segments to an <a href="http://www.w3.org/TR/html5/embedded-content-0.html#htmlmediaelement">HTMLMediaElement</a> [<cite><a class="bibref" href="#bib-HTML5">HTML5</a></cite>].
         A buffering model is also included to describe how the user agent acts when different media segments are
-        appended at different times. Byte stream specifications used with these extensions are available in the byte stream format registry [<cite><a class="bibref" href="#bib-REGISTRY">REGISTRY</a></cite>].</p>
-      <img src="pipeline_model.png" alt="Media Source Pipeline Model Diagram">
+        appended at different times. Byte stream specifications used with these extensions are available in the byte stream format registry [<cite><a class="bibref" href="#bib-MSE-REGISTRY">MSE-REGISTRY</a></cite>].</p>
+      <img alt="Media Source Pipeline Model Diagram" src="pipeline_model.png">
 
-      <section id="goals" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-        <h3 aria-level="2" role="heading" id="h3_goals"><span class="secno">1.1 </span>Goals</h3>
+      <section id="goals" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#goals">
+        <h3 id="h3_goals" role="heading" aria-level="2"><span class="secno">1.1 </span>Goals</h3>
         <p>This specification was designed with the following goals in mind:</p>
         <ul>
           <li>Allow JavaScript to construct media streams independent of how the media is fetched.</li>
@@ -581,21 +586,21 @@
         </ul>
       </section>
 
-      <section id="definitions" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-        <h3 aria-level="2" role="heading" id="h3_definitions"><span class="secno">1.2 </span>Definitions</h3>
+      <section id="definitions" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#definitions">
+        <h3 id="h3_definitions" role="heading" aria-level="2"><span class="secno">1.2 </span>Definitions</h3>
 
         <dl>
           <dt id="active-track-buffers">Active Track Buffers</dt>
           <dd><p>The <a href="#track-buffer">track buffers</a> that provide <a href="#coded-frame">coded frames</a> for the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-audiotrack-enabled">enabled</a></code>
               <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-audiotracks">audioTracks</a></code>, the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-videotrack-selected">selected</a></code> <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-videotracks">videoTracks</a></code>, and the
               <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-showing">"showing"</a></code> or <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-hidden">"hidden"</a></code> <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-texttracks">textTracks</a></code>. All these tracks are associated with
-            <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> objects in the <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> list.</p>
+            <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> objects in the <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> list.</p>
           </dd>
 
           <dt id="append-window">Append Window</dt>
           <dd><p>A <a href="#presentation-timestamp">presentation timestamp</a> range used to filter out <a href="#coded-frame">coded frames</a> while appending. The append window represents a single
             continuous time range with a single start time and end time. Coded frames with <a href="#presentation-timestamp">presentation timestamp</a> within this range are allowed to be appended
-            to the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> while coded frames outside this range are filtered out. The append window start and end times are controlled by
+            to the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> while coded frames outside this range are filtered out. The append window start and end times are controlled by
             the <code><a href="#widl-SourceBuffer-appendWindowStart">appendWindowStart</a></code> and <code><a href="#widl-SourceBuffer-appendWindowEnd">appendWindowEnd</a></code> attributes respectively.</p></dd>
 
           <dt id="coded-frame">Coded Frame</dt>
@@ -603,9 +608,14 @@
 
           <dt id="coded-frame-duration">Coded Frame Duration</dt>
           <dd>
-            <p>The duration of a <a href="#coded-frame">coded frame</a>. For video and text, the duration indicates how long the video frame or text should be displayed. For audio, the duration represents the sum of all the samples contained within the coded frame. For example, if an audio frame contained 441 samples @44100Hz the frame duration would be 100 milliseconds.</p>
+            <p>The duration of a <a href="#coded-frame">coded frame</a>. For video and text, the duration indicates how long the video frame or text should be displayed. For audio, the duration represents the sum of all the samples contained within the coded frame. For example, if an audio frame contained 441 samples @44100Hz the frame duration would be 10 milliseconds.</p>
           </dd>
 
+          <dt id="coded-frame-end-timestamp">Coded Frame End Timestamp</dt>
+          <dd>
+            <p>The sum of a <a href="#coded-frame">coded frame</a> <a href="#presentation-timestamp">presentation timestamp</a> and its
+                <a href="#coded-frame-duration">coded frame duration</a>. It represents the <a href="#presentation-timestamp">presentation timestamp</a> that immediately follows the coded frame.</p>
+          </dd>
 
           <dt id="coded-frame-group">Coded Frame Group</dt>
           <dd><p>A group of <a href="#coded-frame">coded frames</a> that are adjacent and have monotonically increasing <a href="#decode-timestamp">decode timestamps</a> without any gaps. Discontinuities detected by the
@@ -626,25 +636,25 @@
 
           <dt id="init-segment">Initialization Segment</dt>
           <dd>
-	    <p>A sequence of bytes that contain all of the initialization information required to decode a sequence of <a href="#media-segment">media segments</a>. This includes codec initialization data, <a href="#track-id">Track ID</a> mappings for multiplexed segments, and timestamp offsets (e.g. edit lists).</p>
-            <div class="note"><div class="note-title" aria-level="3" role="heading" id="h_note_1"><span>Note</span></div><p class="">The <a href="#byte-stream-format-specs">byte stream format specifications</a> in the byte stream format registry [<cite><a class="bibref" href="#bib-REGISTRY">REGISTRY</a></cite>] contain format specific examples.</p></div>
+        <p>A sequence of bytes that contain all of the initialization information required to decode a sequence of <a href="#media-segment">media segments</a>. This includes codec initialization data, <a href="#track-id">Track ID</a> mappings for multiplexed segments, and timestamp offsets (e.g. edit lists).</p>
+            <div class="note"><div class="note-title" id="h_note_1" role="heading" aria-level="3"><span>Note</span></div><p>The <a href="#byte-stream-format-specs">byte stream format specifications</a> in the byte stream format registry [<cite><a class="bibref" href="#bib-MSE-REGISTRY">MSE-REGISTRY</a></cite>] contain format specific examples.</p></div>
 
-          </dd><dt id="media-segment">Media Segment</dt>
+          <dt id="media-segment">Media Segment</dt>
           <dd>
-	    <p>A sequence of bytes that contain packetized &amp; timestamped media data for a portion of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#media-timeline">media timeline</a>. Media segments are always associated with the most recently appended <a href="#init-segment">initialization segment</a>.</p>
-            <div class="note"><div class="note-title" aria-level="3" role="heading" id="h_note_2"><span>Note</span></div><p class="">The <a href="#byte-stream-format-specs">byte stream format specifications</a> in the byte stream format registry [<cite><a class="bibref" href="#bib-REGISTRY">REGISTRY</a></cite>] contain format specific examples.</p></div>
+        <p>A sequence of bytes that contain packetized &amp; timestamped media data for a portion of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#media-timeline">media timeline</a>. Media segments are always associated with the most recently appended <a href="#init-segment">initialization segment</a>.</p>
+            <div class="note"><div class="note-title" id="h_note_2" role="heading" aria-level="3"><span>Note</span></div><p>The <a href="#byte-stream-format-specs">byte stream format specifications</a> in the byte stream format registry [<cite><a class="bibref" href="#bib-MSE-REGISTRY">MSE-REGISTRY</a></cite>] contain format specific examples.</p></div>
           </dd>
 
           <dt id="mediasource-object-url">MediaSource object URL</dt>
           <dd>
-            <p>A MediaSource object URL is a unique <a href="http://www.w3.org/TR/FileAPI/#url">Blob URI</a> [<cite><a class="bibref" href="#bib-FILE-API">FILE-API</a></cite>] created by <code><a href="#widl-URL-createObjectURL-DOMString-MediaSource-mediaSource">createObjectURL()</a></code>. It is used to attach a <a href="#idl-def-MediaSource" class="idlType"><code>MediaSource</code></a> object to an HTMLMediaElement.</p>
-            <p>These URLs are the same as a <a href="http://www.w3.org/TR/FileAPI/#url">Blob URI</a>, except that anything in the definition of that feature that refers to <a href="http://www.w3.org/TR/FileAPI/#dfn-file">File</a> and <a href="http://www.w3.org/TR/FileAPI/#dfn-Blob">Blob</a> objects is hereby extended to also apply to <a href="#idl-def-MediaSource" class="idlType"><code>MediaSource</code></a> objects.</p>
+            <p>A MediaSource object URL is a unique <a href="http://www.w3.org/TR/FileAPI/#url">Blob URI</a> [<cite><a class="bibref" href="#bib-FILE-API">FILE-API</a></cite>] created by <code><a href="#widl-URL-createObjectURL-DOMString-MediaSource-mediaSource">createObjectURL()</a></code>. It is used to attach a <a class="idlType" href="#idl-def-MediaSource"><code>MediaSource</code></a> object to an HTMLMediaElement.</p>
+            <p>These URLs are the same as a <a href="http://www.w3.org/TR/FileAPI/#url">Blob URI</a>, except that anything in the definition of that feature that refers to <a href="http://www.w3.org/TR/FileAPI/#dfn-file">File</a> and <a href="http://www.w3.org/TR/FileAPI/#dfn-Blob">Blob</a> objects is hereby extended to also apply to <a class="idlType" href="#idl-def-MediaSource"><code>MediaSource</code></a> objects.</p>
             <p>The <a href="http://www.w3.org/TR/html5/browsers.html#origin-0">origin</a> of the MediaSource object URL is the <a href="http://www.w3.org/TR/html5/browsers.html#effective-script-origin">effective script origin</a> of the document that called <code><a href="#widl-URL-createObjectURL-DOMString-MediaSource-mediaSource">createObjectURL()</a></code>.</p>
-            <div class="note"><div class="note-title" aria-level="3" role="heading" id="h_note_3"><span>Note</span></div><p class="">For example, the <a href="http://www.w3.org/TR/html5/browsers.html#origin-0">origin</a> of the MediaSource object URL affects the way that the media element is <a href="http://www.w3.org/TR/html5/embedded-content-0.html#security-with-canvas-elements">consumed by canvas</a>.</p></div>
+            <div class="note"><div class="note-title" id="h_note_3" role="heading" aria-level="3"><span>Note</span></div><p>For example, the <a href="http://www.w3.org/TR/html5/browsers.html#origin-0">origin</a> of the MediaSource object URL affects the way that the media element is <a href="http://www.w3.org/TR/html5/embedded-content-0.html#security-with-canvas-elements">consumed by canvas</a>.</p></div>
           </dd>
 
           <dt id="parent-media-source">Parent Media Source</dt>
-          <dd><p>The parent media source of a <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object is the <a href="#idl-def-MediaSource" class="idlType"><code>MediaSource</code></a> object that created it.</p></dd>
+          <dd><p>The parent media source of a <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object is the <a class="idlType" href="#idl-def-MediaSource"><code>MediaSource</code></a> object that created it.</p></dd>
 
           <dt id="presentation-start-time">Presentation Start Time</dt>
           <dd><p>The presentation start time is the earliest time point in the presentation and specifies the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#initial-playback-position">initial playback position</a> and <a href="http://www.w3.org/TR/html5/embedded-content-0.html#earliest-possible-position">earliest possible position</a>. All presentations created using this specification have a presentation start time of 0.</p></dd>
@@ -668,8 +678,8 @@
           <dd><p>A position in a <a href="#media-segment">media segment</a> where decoding and continuous playback can begin without relying on any previous data in the segment. For video this tends to be the location of I-frames. In the case of audio, most audio frames can be treated as a random access point. Since video tracks tend to have a more sparse distribution of random access points, the location of these points are usually considered the random access points for multiplexed streams.</p></dd>
 
           <dt id="sourcebuffer-byte-stream-format-spec">SourceBuffer byte stream format specification</dt>
-          <dd><p>The specific <a href="#byte-stream-format-specs">byte stream format specification</a> that describes the format of the byte stream accepted by a <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> instance. The
-              <a href="#byte-stream-format-specs">byte stream format specification</a>, for a <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object, is selected based on the <var>type</var> passed to the
+          <dd><p>The specific <a href="#byte-stream-format-specs">byte stream format specification</a> that describes the format of the byte stream accepted by a <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> instance. The
+              <a href="#byte-stream-format-specs">byte stream format specification</a>, for a <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object, is selected based on the <var>type</var> passed to the
               <code><a href="#widl-MediaSource-addSourceBuffer-SourceBuffer-DOMString-type">addSourceBuffer()</a></code> call that created the object.</p></dd>
 
           <dt id="track-description">Track Description</dt>
@@ -682,53 +692,53 @@
       </section>
     </section>
 
-    <section id="mediasource" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-      <!--OddPage--><h2 aria-level="1" role="heading" id="h2_mediasource"><span class="secno">2. </span>MediaSource Object</h2>
-      <p>The MediaSource object represents a source of media data for an HTMLMediaElement. It keeps track of the <code><a href="#widl-MediaSource-readyState">readyState</a></code> for this source as well as a list of <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> objects that can be used to add media data to the presentation. MediaSource objects are created by the web application and then attached to an HTMLMediaElement. The application uses the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> objects in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code> to add media data to this source. The HTMLMediaElement fetches this media data from the <a href="#idl-def-MediaSource" class="idlType"><code>MediaSource</code></a> object when it is needed during playback.</p>
+    <section id="mediasource" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#mediasource">
+      <!--OddPage--><h2 id="h2_mediasource" role="heading" aria-level="1"><span class="secno">2. </span>MediaSource Object</h2>
+      <p>The MediaSource object represents a source of media data for an HTMLMediaElement. It keeps track of the <code><a href="#widl-MediaSource-readyState">readyState</a></code> for this source as well as a list of <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> objects that can be used to add media data to the presentation. MediaSource objects are created by the web application and then attached to an HTMLMediaElement. The application uses the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> objects in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code> to add media data to this source. The HTMLMediaElement fetches this media data from the <a class="idlType" href="#idl-def-MediaSource"><code>MediaSource</code></a> object when it is needed during playback.</p>
 
       <pre class="idl"><span class="idlEnum" id="idl-def-ReadyState">enum <span class="idlEnumID">ReadyState</span> {
-    "<a href="#idl-def-ReadyState.closed" class="idlEnumItem">closed</a>",
-    "<a href="#idl-def-ReadyState.open" class="idlEnumItem">open</a>",
-    "<a href="#idl-def-ReadyState.ended" class="idlEnumItem">ended</a>"
+    "<a class="idlEnumItem" href="#idl-def-ReadyState.closed">closed</a>",
+    "<a class="idlEnumItem" href="#idl-def-ReadyState.open">open</a>",
+    "<a class="idlEnumItem" href="#idl-def-ReadyState.ended">ended</a>"
 };</span></pre><table class="simple"><tbody><tr><th colspan="2">Enumeration description</th></tr><tr><td><code id="idl-def-ReadyState.closed">closed</code></td><td>
           Indicates the source is not currently attached to a media element.
         </td></tr><tr><td><code id="idl-def-ReadyState.open">open</code></td><td>
-          The source has been opened by a media element and is ready for data to be appended to the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> objects in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>.
+          The source has been opened by a media element and is ready for data to be appended to the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> objects in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>.
         </td></tr><tr><td><code id="idl-def-ReadyState.ended">ended</code></td><td>
           The source is still attached to a media element, but <code><a href="#widl-MediaSource-endOfStream-void-EndOfStreamError-error">endOfStream()</a></code> has been called.
         </td></tr></tbody></table>
 
       <pre class="idl"><span class="idlEnum" id="idl-def-EndOfStreamError">enum <span class="idlEnumID">EndOfStreamError</span> {
-    "<a href="#idl-def-EndOfStreamError.network" class="idlEnumItem">network</a>",
-    "<a href="#idl-def-EndOfStreamError.decode" class="idlEnumItem">decode</a>"
+    "<a class="idlEnumItem" href="#idl-def-EndOfStreamError.network">network</a>",
+    "<a class="idlEnumItem" href="#idl-def-EndOfStreamError.decode">decode</a>"
 };</span></pre><table class="simple"><tbody><tr><th colspan="2">Enumeration description</th></tr><tr><td><code id="idl-def-EndOfStreamError.network">network</code></td><td>
           <p>Terminates playback and signals that a network error has occured.</p>
-          <div class="note"><div class="note-title" aria-level="2" role="heading" id="h_note_4"><span>Note</span></div><p class="">JavaScript applications should use this status code to terminate playback with a network error. For example, if a network error occurs while fetching media data.</p></div>
+          <div class="note"><div class="note-title" id="h_note_4" role="heading" aria-level="2"><span>Note</span></div><p>JavaScript applications should use this status code to terminate playback with a network error. For example, if a network error occurs while fetching media data.</p></div>
         </td></tr><tr><td><code id="idl-def-EndOfStreamError.decode">decode</code></td><td>
           <p>Terminates playback and signals that a decoding error has occured.</p>
-          <div class="note"><div class="note-title" aria-level="2" role="heading" id="h_note_5"><span>Note</span></div><p class="">JavaScript applications should use this status code to terminate playback with a decode error. For example, if a parsing error occurs while processing out-of-band media data.</p></div>
+          <div class="note"><div class="note-title" id="h_note_5" role="heading" aria-level="2"><span>Note</span></div><p>JavaScript applications should use this status code to terminate playback with a decode error. For example, if a parsing error occurs while processing out-of-band media data.</p></div>
         </td></tr></tbody></table>
 
       <pre class="idl"><span class="idlInterface" id="idl-def-MediaSource">[<span class="extAttr">Constructor</span>]
 interface <span class="idlInterfaceID">MediaSource</span> : <span class="idlSuperclass">EventTarget</span> {
-<span class="idlAttribute">    readonly    attribute <span class="idlAttrType"><a href="#idl-def-SourceBufferList" class="idlType"><code>SourceBufferList</code></a></span>    <span class="idlAttrName"><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></span>;</span>
-<span class="idlAttribute">    readonly    attribute <span class="idlAttrType"><a href="#idl-def-SourceBufferList" class="idlType"><code>SourceBufferList</code></a></span>    <span class="idlAttrName"><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></span>;</span>
-<span class="idlAttribute">    readonly    attribute <span class="idlAttrType"><a href="#idl-def-ReadyState" class="idlType"><code>ReadyState</code></a></span>          <span class="idlAttrName"><a href="#widl-MediaSource-readyState">readyState</a></span>;</span>
+<span class="idlAttribute">    readonly    attribute <span class="idlAttrType"><a class="idlType" href="#idl-def-SourceBufferList"><code>SourceBufferList</code></a></span>    <span class="idlAttrName"><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></span>;</span>
+<span class="idlAttribute">    readonly    attribute <span class="idlAttrType"><a class="idlType" href="#idl-def-SourceBufferList"><code>SourceBufferList</code></a></span>    <span class="idlAttrName"><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></span>;</span>
+<span class="idlAttribute">    readonly    attribute <span class="idlAttrType"><a class="idlType" href="#idl-def-ReadyState"><code>ReadyState</code></a></span>          <span class="idlAttrName"><a href="#widl-MediaSource-readyState">readyState</a></span>;</span>
 <span class="idlAttribute">                attribute <span class="idlAttrType">unrestricted double</span> <span class="idlAttrName"><a href="#widl-MediaSource-duration">duration</a></span>;</span>
-<span class="idlMethod">    <span class="idlMethType"><a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a></span>   <span class="idlMethName"><a href="#widl-MediaSource-addSourceBuffer-SourceBuffer-DOMString-type">addSourceBuffer</a></span> (<span class="idlParam"><span class="idlParamType">DOMString</span> <span class="idlParamName">type</span></span>);</span>
-<span class="idlMethod">    <span class="idlMethType">void</span>           <span class="idlMethName"><a href="#widl-MediaSource-removeSourceBuffer-void-SourceBuffer-sourceBuffer">removeSourceBuffer</a></span> (<span class="idlParam"><span class="idlParamType"><a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a></span> <span class="idlParamName">sourceBuffer</span></span>);</span>
-<span class="idlMethod">    <span class="idlMethType">void</span>           <span class="idlMethName"><a href="#widl-MediaSource-endOfStream-void-EndOfStreamError-error">endOfStream</a></span> (<span class="idlParam">optional <span class="idlParamType"><a href="#idl-def-EndOfStreamError" class="idlType"><code>EndOfStreamError</code></a></span> <span class="idlParamName">error</span></span>);</span>
+<span class="idlMethod">    <span class="idlMethType"><a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a></span>   <span class="idlMethName"><a href="#widl-MediaSource-addSourceBuffer-SourceBuffer-DOMString-type">addSourceBuffer</a></span> (<span class="idlParam"><span class="idlParamType">DOMString</span> <span class="idlParamName">type</span></span>);</span>
+<span class="idlMethod">    <span class="idlMethType">void</span>           <span class="idlMethName"><a href="#widl-MediaSource-removeSourceBuffer-void-SourceBuffer-sourceBuffer">removeSourceBuffer</a></span> (<span class="idlParam"><span class="idlParamType"><a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a></span> <span class="idlParamName">sourceBuffer</span></span>);</span>
+<span class="idlMethod">    <span class="idlMethType">void</span>           <span class="idlMethName"><a href="#widl-MediaSource-endOfStream-void-EndOfStreamError-error">endOfStream</a></span> (<span class="idlParam">optional <span class="idlParamType"><a class="idlType" href="#idl-def-EndOfStreamError"><code>EndOfStreamError</code></a></span> <span class="idlParamName">error</span></span>);</span>
 <span class="idlMethod">    static <span class="idlMethType">boolean</span> <span class="idlMethName"><a href="#widl-MediaSource-isTypeSupported-boolean-DOMString-type">isTypeSupported</a></span> (<span class="idlParam"><span class="idlParamType">DOMString</span> <span class="idlParamName">type</span></span>);</span>
-};</span></pre><section id="attributes"><h3 aria-level="2" role="heading" id="h3_attributes"><span class="secno">2.1 </span>Attributes</h3><dl class="attributes"><dt id="widl-MediaSource-activeSourceBuffers"><code>activeSourceBuffers</code> of type <span class="idlAttrType"><a href="#idl-def-SourceBufferList" class="idlType"><code>SourceBufferList</code></a></span>, readonly   </dt><dd>
+};</span></pre><section id="attributes"><h3 id="h3_attributes" role="heading" aria-level="2"><span class="secno">2.1 </span>Attributes</h3><dl class="attributes"><dt id="widl-MediaSource-activeSourceBuffers"><code>activeSourceBuffers</code> of type <span class="idlAttrType"><a class="idlType" href="#idl-def-SourceBufferList"><code>SourceBufferList</code></a></span>, readonly   </dt><dd>
           <p>Contains the subset of <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code> that are providing the 
             <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-videotrack-selected">selected video track</a>,  the 
-            <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-audiotrack-enabled">enabled audio tracks</a>, and the 
-            <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-showing">"showing"</a> or <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-hidden">"hidden"</a> text tracks.
+            <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-audiotrack-enabled">enabled audio track(s)</a>, and the 
+            <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-showing">"showing"</a> or <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-hidden">"hidden"</a> text track(s).
           </p>
-          <div class="note"><div class="note-title" aria-level="3" role="heading" id="h_note_6"><span>Note</span></div><p class="">The <a href="#active-source-buffer-changes">Changes to selected/enabled track state</a> section describes how this attribute gets
+          <div class="note"><div class="note-title" id="h_note_6" role="heading" aria-level="3"><span>Note</span></div><p>The <a href="#active-source-buffer-changes">Changes to selected/enabled track state</a> section describes how this attribute gets
             updated.</p></div>
         </dd><dt id="widl-MediaSource-duration"><code>duration</code> of type <span class="idlAttrType">unrestricted double</span>,            </dt><dd>
-          <p>Allows the web application to set the presentation duration. The duration is initially set to NaN when the <a href="#idl-def-MediaSource" class="idlType"><code>MediaSource</code></a> object is created.</p>
+          <p>Allows the web application to set the presentation duration. The duration is initially set to NaN when the <a class="idlType" href="#idl-def-MediaSource"><code>MediaSource</code></a> object is created.</p>
           <p>On getting, run the following steps:</p>
           <ol>
             <li>If the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute is <code><a href="#idl-def-ReadyState.closed">"closed"</a></code> then return NaN and abort these steps.</li>
@@ -738,56 +748,72 @@
           <ol>
             <li>If the value being set is negative or NaN then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_access_err">INVALID_ACCESS_ERR</a></code> exception and abort these steps.</li>
             <li>If the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute is not <code><a href="#idl-def-ReadyState.open">"open"</a></code> then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and abort these steps.</li>
-            <li>If the <code><a href="#widl-SourceBuffer-updating">updating</a></code> attribute equals true on any <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and abort these steps.</li>
+            <li>If the <code><a href="#widl-SourceBuffer-updating">updating</a></code> attribute equals true on any <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and abort these steps.</li>
             <li>Run the <a href="#duration-change-algorithm">duration change algorithm</a> with <var>new duration</var> set to the value being assigned to this attribute.
-	      <div class="note"><div class="note-title" aria-level="3" role="heading" id="h_note_7"><span>Note</span></div><p class=""><code><a href="#widl-SourceBuffer-appendBuffer-void-ArrayBufferView-data">appendBuffer()</a></code>, <code><a href="#widl-SourceBuffer-appendStream-void-Stream-stream-unsigned-long-long-maxSize">appendStream()</a></code> and <code><a href="#widl-MediaSource-endOfStream-void-EndOfStreamError-error">endOfStream()</a></code> can update the duration under certain circumstances.</p></div>
+          <div class="note"><div class="note-title" id="h_note_7" role="heading" aria-level="3"><span>Note</span></div><p><code><a href="#widl-SourceBuffer-appendBuffer-void-ArrayBufferView-data">appendBuffer()</a></code>, <code><a href="#widl-SourceBuffer-appendStream-void-Stream-stream-unsigned-long-long-maxSize">appendStream()</a></code> and <code><a href="#widl-MediaSource-endOfStream-void-EndOfStreamError-error">endOfStream()</a></code> can update the duration under certain circumstances.</p></div>
             </li>
           </ol>
-        </dd><dt id="widl-MediaSource-readyState"><code>readyState</code> of type <span class="idlAttrType"><a href="#idl-def-ReadyState" class="idlType"><code>ReadyState</code></a></span>, readonly   </dt><dd>
-          <p>Indicates the current state of the <a href="#idl-def-MediaSource" class="idlType"><code>MediaSource</code></a> object. When the <a href="#idl-def-MediaSource" class="idlType"><code>MediaSource</code></a> is created <code><a href="#widl-MediaSource-readyState">readyState</a></code> must be set to <code><a href="#idl-def-ReadyState.closed">"closed"</a></code>.
-        </p></dd><dt id="widl-MediaSource-sourceBuffers"><code>sourceBuffers</code> of type <span class="idlAttrType"><a href="#idl-def-SourceBufferList" class="idlType"><code>SourceBufferList</code></a></span>, readonly   </dt><dd>
-          Contains the list of <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> objects associated with this <a href="#idl-def-MediaSource" class="idlType"><code>MediaSource</code></a>. When <code><a href="#widl-MediaSource-readyState">readyState</a></code> equals <code><a href="#idl-def-ReadyState.closed">"closed"</a></code> this list will be empty. Once <code><a href="#widl-MediaSource-readyState">readyState</a></code> transitions to <code><a href="#idl-def-ReadyState.open">"open"</a></code> SourceBuffer objects can be added to this list by using <code><a href="#widl-MediaSource-addSourceBuffer-SourceBuffer-DOMString-type">addSourceBuffer()</a></code>.
-        </dd></dl></section><section id="methods"><h3 aria-level="2" role="heading" id="h3_methods"><span class="secno">2.2 </span>Methods</h3><dl class="methods"><dt id="widl-MediaSource-addSourceBuffer-SourceBuffer-DOMString-type"><code>addSourceBuffer</code></dt><dd>
-          <p>Adds a new <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> to <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>.</p>
-          <p>Implementations must support at least 1 MediaSource object with the following <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> configurations. MediaSource objects must
+        </dd><dt id="widl-MediaSource-readyState"><code>readyState</code> of type <span class="idlAttrType"><a class="idlType" href="#idl-def-ReadyState"><code>ReadyState</code></a></span>, readonly   </dt><dd>
+          <p>Indicates the current state of the <a class="idlType" href="#idl-def-MediaSource"><code>MediaSource</code></a> object. When the <a class="idlType" href="#idl-def-MediaSource"><code>MediaSource</code></a> is created <code><a href="#widl-MediaSource-readyState">readyState</a></code> must be set to <code><a href="#idl-def-ReadyState.closed">"closed"</a></code>.
+        </p></dd><dt id="widl-MediaSource-sourceBuffers"><code>sourceBuffers</code> of type <span class="idlAttrType"><a class="idlType" href="#idl-def-SourceBufferList"><code>SourceBufferList</code></a></span>, readonly   </dt><dd>
+          Contains the list of <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> objects associated with this <a class="idlType" href="#idl-def-MediaSource"><code>MediaSource</code></a>. When <code><a href="#widl-MediaSource-readyState">readyState</a></code> equals <code><a href="#idl-def-ReadyState.closed">"closed"</a></code> this list will be empty. Once <code><a href="#widl-MediaSource-readyState">readyState</a></code> transitions to <code><a href="#idl-def-ReadyState.open">"open"</a></code> SourceBuffer objects can be added to this list by using <code><a href="#widl-MediaSource-addSourceBuffer-SourceBuffer-DOMString-type">addSourceBuffer()</a></code>.
+        </dd></dl></section><section id="methods"><h3 id="h3_methods" role="heading" aria-level="2"><span class="secno">2.2 </span>Methods</h3><dl class="methods"><dt id="widl-MediaSource-addSourceBuffer-SourceBuffer-DOMString-type"><code>addSourceBuffer</code></dt><dd>
+          <p>Adds a new <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> to <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>.</p>
+          <p>Implementations must support at least 1 MediaSource object with the following <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> configurations. MediaSource objects must
             support each of the configurations below, but they are only required to support one configuration at a time.
             Supporting multiple configurations at once or additional configurations is a quality of implementation issue.
-            </p><ul>
+            <ul>
               <li>A single SourceBuffer with 1 audio track and/or 1 video track.</li>
               <li>Two SourceBuffers with one handling a single audio track and the other handling a single video track.</li>
             </ul>
           <p></p>
           
-        <table class="parameters"><tbody><tr><th>Parameter</th><th>Type</th><th>Nullable</th><th>Optional</th><th>Description</th></tr><tr><td class="prmName">type</td><td class="prmType"><code>DOMString</code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptFalse"><span role="img" aria-label="False">✘</span></td><td class="prmDesc"></td></tr></tbody></table><div><em>Return type: </em><code><a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a></code></div><p>When this method is invoked, the user agent must run the following steps:</p><ol class="method-algorithm">
-            <li>If <var>type</var> is null or an empty string then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_access_err">INVALID_ACCESS_ERR</a></code> exception and abort these steps.</li>
-            <li>If <var>type</var> contains a MIME type that is not supported or contains a MIME type that is not supported with the types specified for the other <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> objects in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>, then throw a <code><a href="http://dom.spec.whatwg.org/#dom-domexception-not_supported_err">NOT_SUPPORTED_ERR</a></code> exception and abort these steps.</li>
+        <table class="parameters"><tbody><tr><th>Parameter</th><th>Type</th><th>Nullable</th><th>Optional</th><th>Description</th></tr><tr><td class="prmName">type</td><td class="prmType"><code>DOMString</code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptFalse"><span role="img" aria-label="False">✘</span></td><td class="prmDesc"></td></tr></tbody></table><div><em>Return type: </em><code><a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a></code></div><p>When this method is invoked, the user agent must run the following steps:</p><ol class="method-algorithm">
+            <li>If <var>type</var> is an empty string then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_access_err">INVALID_ACCESS_ERR</a></code> exception and abort these steps.</li>
+            <li>If <var>type</var> contains a MIME type that is not supported or contains a MIME type that is not supported with the types specified for the other <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> objects in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>, then throw a <code><a href="http://dom.spec.whatwg.org/#dom-domexception-not_supported_err">NOT_SUPPORTED_ERR</a></code> exception and abort these steps.</li>
             <li>If the user agent can't handle any more SourceBuffer objects then throw a <code><a href="http://dom.spec.whatwg.org/#dom-domexception-quota_exceeded_err">QUOTA_EXCEEDED_ERR</a></code> exception and abort these steps.
-              <div class="note"><div class="note-title" aria-level="3" role="heading" id="h_note_8"><span>Note</span></div><p class="">For example, a user agent may throw a <code><a href="http://dom.spec.whatwg.org/#dom-domexception-quota_exceeded_err">QUOTA_EXCEEDED_ERR</a></code> exception if the media element has reached the
+              <div class="note"><div class="note-title" id="h_note_8" role="heading" aria-level="3"><span>Note</span></div><p>For example, a user agent may throw a <code><a href="http://dom.spec.whatwg.org/#dom-domexception-quota_exceeded_err">QUOTA_EXCEEDED_ERR</a></code> exception if the media element has reached the
                 <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_metadata">HAVE_METADATA</a></code> readyState. This can occur if the user agent's media engine does not support adding more tracks during
                 playback.
               </p></div>
             </li>
             <li>If the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute is not in the <code><a href="#idl-def-ReadyState.open">"open"</a></code> state then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and abort these steps.</li>
-            <li>Create a new <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object and associated resources.</li>
+            <li>Create a new <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object and associated resources.</li>
+            <li>Set the <var><a href="#sourcebuffer-generate-timestamps-flag">generate timestamps flag</a></var> on the new object to the value in the
+               "Generate Timestamps Flag" column of the byte stream format registry [<cite><a class="bibref" href="#bib-MSE-REGISTRY">MSE-REGISTRY</a></cite>] entry 
+              that is associated with <var>type</var>.
+            <li>
+              <dl class="switch">
+                <dt>If the <var><a href="#sourcebuffer-generate-timestamps-flag">generate timestamps flag</a></var> equals true:</dt>
+                <dd>
+                  Set the <code><a href="#widl-SourceBuffer-mode">mode</a></code> attribute on the new object to
+                  <code><a href="#idl-def-AppendMode.sequence">"sequence"</a></code>.
+                </dd>
+                <dt>Otherwise:</dt>
+                <dd>
+                  Set the <code><a href="#widl-SourceBuffer-mode">mode</a></code> attribute on the new object to
+                  <code><a href="#idl-def-AppendMode.segments">"segments"</a></code>.
+                </dd>
+            </dl></li>
             <li>Add the new object to <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code> and <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-addsourcebuffer">addsourcebuffer</a></code> at <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>.</li>
             <li>Return the new object.</li>
           </ol></dd><dt id="widl-MediaSource-endOfStream-void-EndOfStreamError-error"><code>endOfStream</code></dt><dd>
           <p>Signals the end of the stream.</p>
 
           
-        <table class="parameters"><tbody><tr><th>Parameter</th><th>Type</th><th>Nullable</th><th>Optional</th><th>Description</th></tr><tr><td class="prmName">error</td><td class="prmType"><code><a href="#idl-def-EndOfStreamError" class="idlType"><code>EndOfStreamError</code></a></code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptTrue"><span role="img" aria-label="True">✔</span></td><td class="prmDesc"></td></tr></tbody></table><div><em>Return type: </em><code>void</code></div><p>When this method is invoked, the user agent must run the following steps:</p><ol class="method-algorithm">
+        <table class="parameters"><tbody><tr><th>Parameter</th><th>Type</th><th>Nullable</th><th>Optional</th><th>Description</th></tr><tr><td class="prmName">error</td><td class="prmType"><code><a class="idlType" href="#idl-def-EndOfStreamError"><code>EndOfStreamError</code></a></code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptTrue"><span role="img" aria-label="True">✔</span></td><td class="prmDesc"></td></tr></tbody></table><div><em>Return type: </em><code>void</code></div><p>When this method is invoked, the user agent must run the following steps:</p><ol class="method-algorithm">
             <li>If the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute is not in the <code><a href="#idl-def-ReadyState.open">"open"</a></code> state then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and abort these steps.</li>
-            <li>If the <code><a href="#widl-SourceBuffer-updating">updating</a></code> attribute equals true on any <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and abort these steps.</li>
+            <li>If the <code><a href="#widl-SourceBuffer-updating">updating</a></code> attribute equals true on any <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and abort these steps.</li>
             <li>Run the <a href="#end-of-stream-algorithm">end of stream algorithm</a> with the <var>error</var> parameter set to <var>error</var>.</li>
           </ol></dd><dt id="widl-MediaSource-isTypeSupported-boolean-DOMString-type"><code>isTypeSupported</code>, static</dt><dd>
-          <p>Check to see whether the <a href="#idl-def-MediaSource" class="idlType"><code>MediaSource</code></a> is capable of creating <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> objects for the specified MIME type.</p>
+          <p>Check to see whether the <a class="idlType" href="#idl-def-MediaSource"><code>MediaSource</code></a> is capable of creating <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> objects for the specified MIME type.</p>
 
           
-          <div class="note"><div class="note-title" aria-level="3" role="heading" id="h_note_9"><span>Note</span></div><p class="">
-            If true is returned from this method, it only indicates that the <a href="#idl-def-MediaSource" class="idlType"><code>MediaSource</code></a> implementation is capable of creating <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> objects for the specified MIME type. An <code><a href="#widl-MediaSource-addSourceBuffer-SourceBuffer-DOMString-type">addSourceBuffer()</a></code> call may still fail if sufficient resources are not available to support the addition of a new <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a>.
+          <div class="note"><div class="note-title" id="h_note_9" role="heading" aria-level="3"><span>Note</span></div><p>
+            If true is returned from this method, it only indicates that the <a class="idlType" href="#idl-def-MediaSource"><code>MediaSource</code></a> implementation is capable of creating <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> objects for the specified MIME type. An <code><a href="#widl-MediaSource-addSourceBuffer-SourceBuffer-DOMString-type">addSourceBuffer()</a></code> call may still fail if sufficient resources are not available to support the addition of a new <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a>.
           </p></div>
-          <div class="note"><div class="note-title" aria-level="3" role="heading" id="h_note_10"><span>Note</span></div><p class="">
-            This method returning true implies that HTMLMediaElement.canPlayType() will return "maybe" or "probably" since it does not make sense for a <a href="#idl-def-MediaSource" class="idlType"><code>MediaSource</code></a> to support a type the HTMLMediaElement knows it cannot play.
+          <div class="note"><div class="note-title" id="h_note_10" role="heading" aria-level="3"><span>Note</span></div><p>
+            This method returning true implies that HTMLMediaElement.canPlayType() will return "maybe" or "probably" since it does not make sense for a <a class="idlType" href="#idl-def-MediaSource"><code>MediaSource</code></a> to support a type the HTMLMediaElement knows it cannot play.
           </p></div>
         <table class="parameters"><tbody><tr><th>Parameter</th><th>Type</th><th>Nullable</th><th>Optional</th><th>Description</th></tr><tr><td class="prmName">type</td><td class="prmType"><code>DOMString</code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptFalse"><span role="img" aria-label="False">✘</span></td><td class="prmDesc"></td></tr></tbody></table><div><em>Return type: </em><code>boolean</code></div><p>When this method is invoked, the user agent must run the following steps:</p><ol class="method-algorithm">
             <li>If <var>type</var> is an empty string, then return false.</li>
@@ -797,15 +823,14 @@
             <li>If the MediaSource does not support the specified combination of media type, media subtype, and codecs then return false.</li>
             <li>Return true.</li>
           </ol></dd><dt id="widl-MediaSource-removeSourceBuffer-void-SourceBuffer-sourceBuffer"><code>removeSourceBuffer</code></dt><dd>
-          <p>Removes a <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> from <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>.</p>
+          <p>Removes a <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> from <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>.</p>
 
           
-        <table class="parameters"><tbody><tr><th>Parameter</th><th>Type</th><th>Nullable</th><th>Optional</th><th>Description</th></tr><tr><td class="prmName">sourceBuffer</td><td class="prmType"><code><a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a></code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptFalse"><span role="img" aria-label="False">✘</span></td><td class="prmDesc"></td></tr></tbody></table><div><em>Return type: </em><code>void</code></div><p>When this method is invoked, the user agent must run the following steps:</p><ol class="method-algorithm">
-            <li>If <var>sourceBuffer</var> is null then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_access_err">INVALID_ACCESS_ERR</a></code> exception and abort these steps.</li>
+        <table class="parameters"><tbody><tr><th>Parameter</th><th>Type</th><th>Nullable</th><th>Optional</th><th>Description</th></tr><tr><td class="prmName">sourceBuffer</td><td class="prmType"><code><a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a></code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptFalse"><span role="img" aria-label="False">✘</span></td><td class="prmDesc"></td></tr></tbody></table><div><em>Return type: </em><code>void</code></div><p>When this method is invoked, the user agent must run the following steps:</p><ol class="method-algorithm">
             <li>If <var>sourceBuffer</var> specifies an object that is not in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code> then throw a <code><a href="http://dom.spec.whatwg.org/#dom-domexception-not_found_err">NOT_FOUND_ERR</a></code> exception and abort these steps.</li>
             <li>If the <var>sourceBuffer</var>.<code><a href="#widl-SourceBuffer-updating">updating</a></code> attribute equals true, then run the following steps:
               <ol>
-                <li>Abort the <a href="#sourcebuffer-buffer-append">buffer append </a> and <a href="#sourcebuffer-stream-append-loop">stream append loop</a> algorithms if they are running.</li>
+                <li>Abort the <a href="#sourcebuffer-buffer-append">buffer append</a> and <a href="#sourcebuffer-stream-append-loop">stream append loop</a> algorithms if they are running.</li>
                 <li>Set the <var>sourceBuffer</var>.<code><a href="#widl-SourceBuffer-updating">updating</a></code> attribute to false.</li>
                 <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-abort">abort</a></code> at <var>sourceBuffer</var>.</li>
                 <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-updateend">updateend</a></code> at <var>sourceBuffer</var>.</li>
@@ -877,14 +902,14 @@
             </li>
 
             <li>If <var>sourceBuffer</var> is in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>, then remove <var>sourceBuffer</var> from <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> and
-              <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-removesourcebuffer">removesourcebuffer</a></code> at the <a href="#idl-def-SourceBufferList" class="idlType"><code>SourceBufferList</code></a> returned by <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>.</li>
+              <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-removesourcebuffer">removesourcebuffer</a></code> at the <a class="idlType" href="#idl-def-SourceBufferList"><code>SourceBufferList</code></a> returned by <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>.</li>
             <li>Remove <var>sourceBuffer</var> from <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code> and <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-removesourcebuffer">removesourcebuffer</a></code> at 
-              the <a href="#idl-def-SourceBufferList" class="idlType"><code>SourceBufferList</code></a> returned by <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>.</li>
+              the <a class="idlType" href="#idl-def-SourceBufferList"><code>SourceBufferList</code></a> returned by <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>.</li>
             <li>Destroy all resources for <var>sourceBuffer</var>.</li>
           </ol></dd></dl></section>
 
-      <section id="mediasource-events" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-        <h3 aria-level="2" role="heading" id="h3_mediasource-events"><span class="secno">2.3 </span>Event Summary</h3>
+      <section id="mediasource-events" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#mediasource-events">
+        <h3 id="h3_mediasource-events" role="heading" aria-level="2"><span class="secno">2.3 </span>Event Summary</h3>
         <table class="old-table">
           <thead>
             <tr>
@@ -907,18 +932,18 @@
             <tr>
               <td><dfn id="dom-evt-sourceclose"><code>sourceclose</code></dfn></td>
               <td><code>Event</code></td>
-	      <td><code><a href="#widl-MediaSource-readyState">readyState</a></code> transitions from <code><a href="#idl-def-ReadyState.open">"open"</a></code> to <code><a href="#idl-def-ReadyState.closed">"closed"</a></code> or <code><a href="#idl-def-ReadyState.ended">"ended"</a></code> to <code><a href="#idl-def-ReadyState.closed">"closed"</a></code>.</td>
+          <td><code><a href="#widl-MediaSource-readyState">readyState</a></code> transitions from <code><a href="#idl-def-ReadyState.open">"open"</a></code> to <code><a href="#idl-def-ReadyState.closed">"closed"</a></code> or <code><a href="#idl-def-ReadyState.ended">"ended"</a></code> to <code><a href="#idl-def-ReadyState.closed">"closed"</a></code>.</td>
             </tr>
           </tbody>
         </table>
       </section>
 
-      <section id="mediasource-algorithms" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-        <h3 aria-level="2" role="heading" id="h3_mediasource-algorithms"><span class="secno">2.4 </span>Algorithms</h3>
+      <section id="mediasource-algorithms" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#mediasource-algorithms">
+        <h3 id="h3_mediasource-algorithms" role="heading" aria-level="2"><span class="secno">2.4 </span>Algorithms</h3>
 
-        <section id="mediasource-attach" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-          <h4 aria-level="3" role="heading" id="h4_mediasource-attach"><span class="secno">2.4.1 </span>Attaching to a media element</h4>
-          <p> A <a href="#idl-def-MediaSource" class="idlType"><code>MediaSource</code></a> object can be attached to a media element by assigning a <a href="#mediasource-object-url">MediaSource object URL</a> to the media element <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#attr-media-src">src</a></code> attribute or the src attribute of a &lt;source&gt; inside a media element. A <a href="#mediasource-object-url">MediaSource object URL</a> is created by passing a MediaSource object to <code><a href="#widl-URL-createObjectURL-DOMString-MediaSource-mediaSource">createObjectURL()</a></code>.</p>
+        <section id="mediasource-attach" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#mediasource-attach">
+          <h4 id="h4_mediasource-attach" role="heading" aria-level="3"><span class="secno">2.4.1 </span>Attaching to a media element</h4>
+          <p> A <a class="idlType" href="#idl-def-MediaSource"><code>MediaSource</code></a> object can be attached to a media element by assigning a <a href="#mediasource-object-url">MediaSource object URL</a> to the media element <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#attr-media-src">src</a></code> attribute or the src attribute of a &lt;source&gt; inside a media element. A <a href="#mediasource-object-url">MediaSource object URL</a> is created by passing a MediaSource object to <code><a href="#widl-URL-createObjectURL-DOMString-MediaSource-mediaSource">createObjectURL()</a></code>.</p>
           <p>If the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a> absolute URL matches the MediaSource object URL, run the following steps right before the <span>"<i>Perform a potentially CORS-enabled fetch</i>"</span>
             step in the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a>.</p>
 
@@ -930,51 +955,51 @@
               <ol>
                 <li>Set the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute to <code><a href="#idl-def-ReadyState.open">"open"</a></code>.</li>
                 <li>
-                  <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-sourceopen">sourceopen</a></code> at the <a href="#idl-def-MediaSource" class="idlType"><code>MediaSource</code></a>.</li>
+                  <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-sourceopen">sourceopen</a></code> at the <a class="idlType" href="#idl-def-MediaSource"><code>MediaSource</code></a>.</li>
                 <li>Continue the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a> by running the <span>"<i>Perform a potentially CORS-enabled fetch</i>"</span> step. Text in the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a>
                   that refers to "the download" or "bytes received" refer to data passed in via <code><a href="#widl-SourceBuffer-appendBuffer-void-ArrayBufferView-data">appendBuffer()</a></code> and <code><a href="#widl-SourceBuffer-appendStream-void-Stream-stream-unsigned-long-long-maxSize">appendStream()</a></code>. References to
-                  HTTP in the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a> do not apply because the HTMLMediaElement does not fetch media data via HTTP when a <a href="#idl-def-MediaSource" class="idlType"><code>MediaSource</code></a> is attached.</li>
+                  HTTP in the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a> do not apply because the HTMLMediaElement does not fetch media data via HTTP when a <a class="idlType" href="#idl-def-MediaSource"><code>MediaSource</code></a> is attached.</li>
               </ol>
             </dd>
           </dl>
         </section>
 
-        <section id="mediasource-detach" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-          <h4 aria-level="3" role="heading" id="h4_mediasource-detach"><span class="secno">2.4.2 </span>Detaching from a media element</h4>
+        <section id="mediasource-detach" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#mediasource-detach">
+          <h4 id="h4_mediasource-detach" role="heading" aria-level="3"><span class="secno">2.4.2 </span>Detaching from a media element</h4>
           <p>The following steps are run in any case where the media element is going to transition to <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-network_empty">NETWORK_EMPTY</a> and <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-mediacontroller-emptied">emptied</a> at the media element. These steps must be run right before the transition.</p>
           <ol>
             <li>Set the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute to <code><a href="#idl-def-ReadyState.closed">"closed"</a></code>.</li>
             <li>Set the <code><a href="#widl-MediaSource-duration">duration</a></code> attribute to NaN.</li>
-            <li>Remove all the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> objects from <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>.</li>
+            <li>Remove all the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> objects from <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>.</li>
             <li>
               <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-removesourcebuffer">removesourcebuffer</a></code> at <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>.</li>
-            <li>Remove all the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> objects from <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>.</li>
+            <li>Remove all the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> objects from <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>.</li>
             <li>
               <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-removesourcebuffer">removesourcebuffer</a></code> at <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>.</li>
             <li>
-              <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-sourceclose">sourceclose</a></code> at the <a href="#idl-def-MediaSource" class="idlType"><code>MediaSource</code></a>.</li>
+              <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-sourceclose">sourceclose</a></code> at the <a class="idlType" href="#idl-def-MediaSource"><code>MediaSource</code></a>.</li>
           </ol>
         </section>
 
-        <section id="mediasource-seeking" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-          <h4 aria-level="3" role="heading" id="h4_mediasource-seeking"><span class="secno">2.4.3 </span>Seeking</h4>
+        <section id="mediasource-seeking" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#mediasource-seeking">
+          <h4 id="h4_mediasource-seeking" role="heading" aria-level="3"><span class="secno">2.4.3 </span>Seeking</h4>
           <p>Run the following steps as part of the "<i>Wait until the user agent has established whether or not the media data for the new playback position is available, and, if it is, until it has decoded enough data to play back that position"</i> step of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seek">seek algorithm</a>:</p>
           <ol>
-            <li>The media element looks for <a href="#media-segment">media segments</a> containing the <var>new playback position</var> in each <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>.
+            <li>The media element looks for <a href="#media-segment">media segments</a> containing the <var>new playback position</var> in each <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>.
               <dl class="switch">
-	        <dt>If one or more of the objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> is missing <a href="#media-segment">media segments</a> for the <var>new playback position</var>
+            <dt>If one or more of the objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> is missing <a href="#media-segment">media segments</a> for the <var>new playback position</var>
                 </dt>
-	        <dd>
-	          <ol>
-	            <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_metadata">HAVE_METADATA</a></code>.</li>
-	            <li>The media element waits until an <code><a href="#widl-SourceBuffer-appendBuffer-void-ArrayBufferView-data">appendBuffer()</a></code> or an <code><a href="#widl-SourceBuffer-appendStream-void-Stream-stream-unsigned-long-long-maxSize">appendStream()</a></code> call causes the <a href="#sourcebuffer-coded-frame-processing">coded frame processing algorithm</a> to set
+            <dd>
+              <ol>
+                <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_metadata">HAVE_METADATA</a></code>.</li>
+                <li>The media element waits until an <code><a href="#widl-SourceBuffer-appendBuffer-void-ArrayBufferView-data">appendBuffer()</a></code> or an <code><a href="#widl-SourceBuffer-appendStream-void-Stream-stream-unsigned-long-long-maxSize">appendStream()</a></code> call causes the <a href="#sourcebuffer-coded-frame-processing">coded frame processing algorithm</a> to set
                       the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to a value greater than <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_metadata">HAVE_METADATA</a></code>.
-                      <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_11"><span>Note</span></div><p class="">The web application can use <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> to determine what the media element needs to resume playback.</p></div>
+                      <div class="note"><div class="note-title" id="h_note_11" role="heading" aria-level="4"><span>Note</span></div><p>The web application can use <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> to determine what the media element needs to resume playback.</p></div>
                     </li>
-	          </ol>
-	        </dd>
-	        <dt>Otherwise</dt>
-	        <dd>Continue</dd>
+              </ol>
+            </dd>
+            <dt>Otherwise</dt>
+            <dd>Continue</dd>
               </dl>
             </li>
             <li>The media element resets all decoders and initializes each one with data from the appropriate <a href="#init-segment">initialization segment</a>.</li>
@@ -984,20 +1009,20 @@
           </ol>
         </section>
 
-        <section id="buffer-monitoring" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-          <h4 aria-level="3" role="heading" id="h4_buffer-monitoring"><span class="secno">2.4.4 </span>SourceBuffer Monitoring</h4>
-          <p>The following steps are periodically run during playback to make sure that all of the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> have <a href="#enough-data">enough data to ensure uninterrupted playback</a>. Appending new segments and changes to <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> also cause these steps to run because they affect the conditions that trigger state transitions.</p>
+        <section id="buffer-monitoring" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#buffer-monitoring">
+          <h4 id="h4_buffer-monitoring" role="heading" aria-level="3"><span class="secno">2.4.4 </span>SourceBuffer Monitoring</h4>
+          <p>The following steps are periodically run during playback to make sure that all of the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> have <a href="#enough-data">enough data to ensure uninterrupted playback</a>. Appending new segments and changes to <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> also cause these steps to run because they affect the conditions that trigger state transitions.</p>
 
           <p>Having <dfn id="enough-data">enough data to ensure uninterrupted playback</dfn> is an implementation specific condition where the user agent
           determines that it currently has enough data to play the presentation without stalling for a meaningful period of time. This condition is
           constantly evaluated to determine when to transition the media element into and out of the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_enough_data">HAVE_ENOUGH_DATA</a></code> ready state.
           These transitions indicate when the user agent believes it has enough data buffered or it needs more data respectively.</p>
 
-          <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_12"><span>Note</span></div><p class="">An implementation may choose to use bytes buffered, time buffered, the append rate, or any other metric it sees fit to
+          <div class="note"><div class="note-title" id="h_note_12" role="heading" aria-level="4"><span>Note</span></div><p>An implementation may choose to use bytes buffered, time buffered, the append rate, or any other metric it sees fit to
             determine when it has enough data. The metrics used may change during playback so web applications should only rely on the value of
             <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> to determine whether more data is needed or not.</p></div>
 
-          <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_13"><span>Note</span></div><p class="">When the media element needs more data, the user agent should transition it from <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_enough_data">HAVE_ENOUGH_DATA</a></code> to
+          <div class="note"><div class="note-title" id="h_note_13" role="heading" aria-level="4"><span>Note</span></div><p>When the media element needs more data, the user agent should transition it from <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_enough_data">HAVE_ENOUGH_DATA</a></code> to
             <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_future_data">HAVE_FUTURE_DATA</a></code> early enough for a web application to be able to respond without causing an interruption in playback.
             For example, transitioning when the current playback position is 500ms before the end of the buffered data gives the application roughly
             500ms to append more data before playback stalls.</p></div>
@@ -1005,125 +1030,125 @@
           <dl class="switch">
             <dt>If <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> for all objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> do not contain <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#timeranges">TimeRanges</a></code> for the current playback position:</dt>
             <dd>
-	      <ol>
-	        <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_metadata">HAVE_METADATA</a></code>.</li>
-	        <li>If this is the first transition to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_metadata">HAVE_METADATA</a></code>, then <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-loadedmetadata">loadedmetadata</a></code> at the media element.</li>
-	        <li>Abort these steps.</li>
-	      </ol>
+          <ol>
+            <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_metadata">HAVE_METADATA</a></code>.</li>
+            <li>If this is the first transition to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_metadata">HAVE_METADATA</a></code>, then <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-loadedmetadata">loadedmetadata</a></code> at the media element.</li>
+            <li>Abort these steps.</li>
+          </ol>
             </dd>
             <dt>If <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> for all objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> contain <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#timeranges">TimeRanges</a></code> that include the current playback position and <a href="#enough-data">enough data to ensure uninterrupted playback</a>:</dt>
             <dd>
-	      <ol>
-	        <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_enough_data">HAVE_ENOUGH_DATA</a></code>.</li>
-	        <li>
+          <ol>
+            <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_enough_data">HAVE_ENOUGH_DATA</a></code>.</li>
+            <li>
                   <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-canplaythrough">canplaythrough</a></code> at the media element.</li>
-	        <li>Playback may resume at this point if it was previously suspended by a transition to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>.</li>
-	        <li>Abort these steps.</li>
-	      </ol>
+            <li>Playback may resume at this point if it was previously suspended by a transition to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>.</li>
+            <li>Abort these steps.</li>
+          </ol>
             </dd>
-            <dt>If <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> for at least one object in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> contains a <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#timeranges">TimeRange</a></code> that includes the current playback position but not <a href="#enough-data">enough data to ensure uninterrupted playback</a>:</dt>
+            <dt>If <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> for all objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> contain a <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#timeranges">TimeRange</a></code> that includes the current playback position and some time beyond the current playback position, then run the following steps:</dt>
             <dd>
-	      <ol>
-	        <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_future_data">HAVE_FUTURE_DATA</a></code>.</li>
-	        <li>If the previous value of <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> was less than <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_future_data">HAVE_FUTURE_DATA</a></code>, then <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-canplay">canplay</a></code> at the media element.</li>
-	        <li>Playback may resume at this point if it was previously suspended by a transition to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>.</li>
-	        <li>Abort these steps.</li>
-	      </ol>
+          <ol>
+            <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_future_data">HAVE_FUTURE_DATA</a></code>.</li>
+            <li>If the previous value of <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> was less than <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_future_data">HAVE_FUTURE_DATA</a></code>, then <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-canplay">canplay</a></code> at the media element.</li>
+            <li>Playback may resume at this point if it was previously suspended by a transition to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>.</li>
+            <li>Abort these steps.</li>
+          </ol>
             </dd>
             <dt>If <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> for at least one object in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> contains a <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#timeranges">TimeRange</a></code> that ends at the current playback position and does not have a range covering the time immediately after the current position:</dt>
             <dd>
-	      <ol>
-	        <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>.</li>
-	        <li>If this is the first transition to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>, then <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-loadeddata">loadeddata</a></code> at the media element.</li>
-	        <li>Playback is suspended at this point since the media element doesn't have enough data to advance the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#media-timeline">media timeline</a>.</li>
-	        <li>Abort these steps.</li>
-	      </ol>
+          <ol>
+            <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>.</li>
+            <li>If this is the first transition to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>, then <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-loadeddata">loadeddata</a></code> at the media element.</li>
+            <li>Playback is suspended at this point since the media element doesn't have enough data to advance the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#media-timeline">media timeline</a>.</li>
+            <li>Abort these steps.</li>
+          </ol>
             </dd>
           </dl>
         </section>
 
-        <section id="active-source-buffer-changes" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-          <h4 aria-level="3" role="heading" id="h4_active-source-buffer-changes"><span class="secno">2.4.5 </span>Changes to selected/enabled track state</h4>
-          <p>During playback <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> needs to be updated if the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-videotrack-selected">selected video track</a>, the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-audiotrack-enabled">enabled audio tracks</a>, or a text track <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-mode">mode</a> changes. When one or more of these changes occur the following steps need to be followed.</p>
+        <section id="active-source-buffer-changes" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#active-source-buffer-changes">
+          <h4 id="h4_active-source-buffer-changes" role="heading" aria-level="3"><span class="secno">2.4.5 </span>Changes to selected/enabled track state</h4>
+          <p>During playback <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> needs to be updated if the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-videotrack-selected">selected video track</a>, the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-audiotrack-enabled">enabled audio track(s)</a>, or a text track <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-mode">mode</a> changes. When one or more of these changes occur the following steps need to be followed.</p>
           <dl class="switch">
             <dt>If the selected video track changes, then run the following steps:</dt>
             <dd>
-	      <ol>
-	        <li>If the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with the previously selected video track is not associated with any other enabled tracks, run the following steps:
-  	          <ol>
-	            <li>Remove the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> from <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>.</li>
-	            <li>
+          <ol>
+            <li>If the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> associated with the previously selected video track is not associated with any other enabled tracks, run the following steps:
+              <ol>
+                <li>Remove the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> from <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>.</li>
+                <li>
                       <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-removesourcebuffer">removesourcebuffer</a></code> at <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
                     </li>
-	          </ol>
-	        </li>
-	        <li>If the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with the newly selected video track is not already in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>, run the following steps:
-	          <ol>
-	            <li>Add the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> to <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>.</li>
-	            <li>
+              </ol>
+            </li>
+            <li>If the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> associated with the newly selected video track is not already in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>, run the following steps:
+              <ol>
+                <li>Add the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> to <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>.</li>
+                <li>
                       <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-addsourcebuffer">addsourcebuffer</a></code> at <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
                     </li>
-	          </ol>
-	        </li>
-	      </ol>
+              </ol>
+            </li>
+          </ol>
             </dd>
-            <dt>If an audio track becomes disabled and the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with this track is not associated with any other enabled or selected track, then run the following steps:</dt>
+            <dt>If an audio track becomes disabled and the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> associated with this track is not associated with any other enabled or selected track, then run the following steps:</dt>
             <dd>
-	      <ol>
-	        <li>Remove the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with the audio track from <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
+          <ol>
+            <li>Remove the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> associated with the audio track from <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
                 </li>
-	        <li>
+            <li>
                   <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-removesourcebuffer">removesourcebuffer</a></code> at <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
                 </li>
-	      </ol>
+          </ol>
             </dd>
-            <dt>If an audio track becomes enabled and the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with this track is not already in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>, then run the following steps:
+            <dt>If an audio track becomes enabled and the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> associated with this track is not already in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>, then run the following steps:
             </dt>
             <dd>
-	      <ol>
-	        <li>Add the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with the audio track to <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
+          <ol>
+            <li>Add the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> associated with the audio track to <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
                 </li>
-	        <li>
+            <li>
                   <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-addsourcebuffer">addsourcebuffer</a></code> at <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
                 </li>
-	      </ol>
+          </ol>
             </dd>
-            <dt>If a text track <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-mode">mode</a> becomes <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-disabled">"disabled"</a> and the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with this track is not associated with any other enabled or selected track, then run the following steps:</dt>
+            <dt>If a text track <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-mode">mode</a> becomes <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-disabled">"disabled"</a> and the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> associated with this track is not associated with any other enabled or selected track, then run the following steps:</dt>
             <dd>
-	      <ol>
-	        <li>Remove the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with the text track from <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
+          <ol>
+            <li>Remove the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> associated with the text track from <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
                 </li>
-	        <li>
+            <li>
                   <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-removesourcebuffer">removesourcebuffer</a></code> at <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
                 </li>
-	      </ol>
+          </ol>
             </dd>
-            <dt>If a text track <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-mode">mode</a> becomes <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-showing">"showing"</a> or <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-hidden">"hidden"</a> and the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with this track is not already in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>, then run the following steps:
+            <dt>If a text track <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-mode">mode</a> becomes <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-showing">"showing"</a> or <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-hidden">"hidden"</a> and the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> associated with this track is not already in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>, then run the following steps:
             </dt>
             <dd>
-	      <ol>
-	        <li>Add the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with the text track to <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
+          <ol>
+            <li>Add the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> associated with the text track to <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
                 </li>
-	        <li>
+            <li>
                   <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-addsourcebuffer">addsourcebuffer</a></code> at <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
                 </li>
-	      </ol>
+          </ol>
             </dd>
           </dl>
         </section>
 
-        <section id="duration-change-algorithm" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-          <h4 aria-level="3" role="heading" id="h4_duration-change-algorithm"><span class="secno">2.4.6 </span>Duration change</h4>
+        <section id="duration-change-algorithm" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#duration-change-algorithm">
+          <h4 id="h4_duration-change-algorithm" role="heading" aria-level="3"><span class="secno">2.4.6 </span>Duration change</h4>
           <p>Follow these steps when <code><a href="#widl-MediaSource-duration">duration</a></code> needs to change to a <var>new duration</var>.</p>
           <ol>
             <li>If the current value of <code><a href="#widl-MediaSource-duration">duration</a></code> is equal to <var>new duration</var>, then return.</li>
             <li>Set <var>old duration</var> to the current value of <code><a href="#widl-MediaSource-duration">duration</a></code>.
-            </li><li>Update <code><a href="#widl-MediaSource-duration">duration</a></code> to <var>new duration</var>.</li>
-            <li>If the <var>new duration</var> is less than <var>old duration</var>, then call <code><a href="#widl-SourceBuffer-remove-void-double-start-double-end">remove</a>(<var>new duration</var>, <var>old duration</var>)</code> on all objects in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>.
-              <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_14"><span>Note</span></div><p class="">This preserves audio frames and text cues that start before and end after the <code><a href="#widl-MediaSource-duration">duration</a></code>.</p></div></li>
+            <li>Update <code><a href="#widl-MediaSource-duration">duration</a></code> to <var>new duration</var>.</li>
+            <li>If the <var>new duration</var> is less than <var>old duration</var>, then call <a href="#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end">remove</a>(<var>new duration</var>, <var>old duration</var>) on all objects in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>.
+              <div class="note"><div class="note-title" id="h_note_14" role="heading" aria-level="4"><span>Note</span></div><p>This preserves audio frames and text cues that start before and end after the <code><a href="#widl-MediaSource-duration">duration</a></code>.</p></div></li>
             <li>If a user agent is unable to partially render audio frames or text cues that start before and end after the <code><a href="#widl-MediaSource-duration">duration</a></code>, then run the following steps:
               <ol>
-                <li>Update <var>new duration</var> to the highest end timestamp across all <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> objects in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>.</li>
+                <li>Update <var>new duration</var> to the highest end time reported by the <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> attribute across all <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> objects in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>.</li>
                 <li>Update <code><a href="#widl-MediaSource-duration">duration</a></code> to <var>new duration</var>.</li>
               </ol>
             </li>
@@ -1131,50 +1156,53 @@
           </ol>
         </section>
 
-        <section id="end-of-stream-algorithm" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-          <h4 aria-level="3" role="heading" id="h4_end-of-stream-algorithm"><span class="secno">2.4.7 </span>End of stream algorithm</h4>
+        <section id="end-of-stream-algorithm" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#end-of-stream-algorithm">
+          <h4 id="h4_end-of-stream-algorithm" role="heading" aria-level="3"><span class="secno">2.4.7 </span>End of stream algorithm</h4>
           <p>This algorithm gets called when the application signals the end of stream via an <code><a href="#widl-MediaSource-endOfStream-void-EndOfStreamError-error">endOfStream()</a></code> call or an algorithm needs to
             signal a decode error. This algorithm takes an <var>error</var> parameter that indicates whether an error will be signalled.</p>
           <ol>
             <li>Change the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute value to <code><a href="#idl-def-ReadyState.ended">"ended"</a></code>.</li>
             <li>
-              <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-sourceended">sourceended</a></code> at the <a href="#idl-def-MediaSource" class="idlType"><code>MediaSource</code></a>.</li>
+              <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-sourceended">sourceended</a></code> at the <a class="idlType" href="#idl-def-MediaSource"><code>MediaSource</code></a>.</li>
             <li><dl class="switch">
-                <dt>If <var>error</var> is not set, is null, or is an empty string</dt>
+                <dt>If <var>error</var> is not set</dt>
                 <dd>
-	          <ol>
-	            <li>Run the <a href="#duration-change-algorithm">duration change algorithm</a> with <var>new duration</var> set to the highest end timestamp across all <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> objects in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>.<br>
-		      <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_15"><span>Note</span></div><p class="">This allows the duration to properly reflect the end of the appended media segments. For example, if the duration was explicitly set to 10 seconds and only media segments for 0 to 5 seconds were appended before endOfStream() was called, then the duration will get updated to 5 seconds.</p></div>
-	            </li>
-	            <li>Notify the media element that it now has all of the media data.</li>
-	          </ol>
-	        </dd>
+              <ol>
+                <li>Run the <a href="#duration-change-algorithm">duration change algorithm</a> with <var>new duration</var> set to the highest end time reported by the <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> attribute across all <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> objects in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>.<br>
+              <div class="note"><div class="note-title" id="h_note_15" role="heading" aria-level="4"><span>Note</span></div><p>This allows the duration to properly reflect the end of the appended media segments. For example, if the duration was explicitly set to 10 seconds and only media segments for 0 to 5 seconds were appended before endOfStream() was called, then the duration will get updated to 5 seconds.</p></div>
+                </li>
+                <li>Notify the media element that it now has all of the media data.</li>
+              </ol>
+            </dd>
                 <dt>If <var>error</var> is set to <code><a href="#idl-def-EndOfStreamError.network">"network"</a></code>
                 </dt>
                 <dd>
-	          <dl class="switch">
-	            <dt>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute equals <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_nothing">HAVE_NOTHING</a></code>
+              <dl class="switch">
+                <dt>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute equals <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_nothing">HAVE_NOTHING</a></code>
                     </dt>
-	            <dd>Run the <span>"<i>If the media data cannot be fetched at all, due to network errors, causing the user agent to give up trying to fetch the resource</i>"</span> steps of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a>.</dd>
-	            <dt>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute is greater than <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_nothing">HAVE_NOTHING</a></code>
+                <dd>Run the <span>"<i>If the media data cannot be fetched at all, due to network errors, causing the user agent to give up trying to fetch the resource</i>"</span> steps of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a>.</dd>
+                <dt>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute is greater than <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_nothing">HAVE_NOTHING</a></code>
                     </dt>
-	            <dd>Run the "<i>If the connection is interrupted after some media data has been received, causing the user agent to give up trying to fetch the resource</i>" steps of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a>.</dd>
-	          </dl>
-	        </dd>
+                <dd>Run the "<i>If the connection is interrupted after some media data has been received, causing the user agent to give up trying to fetch the resource</i>" steps of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a>.</dd>
+              </dl>
+            </dd>
                 <dt>If <var>error</var> is set to <code><a href="#idl-def-EndOfStreamError.decode">"decode"</a></code>
                 </dt>
                 <dd>
-	          <dl class="switch">
-	            <dt>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute equals <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_nothing">HAVE_NOTHING</a></code>
-                    </dt>
-	            <dd>Run the "<i>If the media data can be fetched but is found by inspection to be in an unsupported format, or can otherwise not be rendered at all</i>" steps of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a>.</dd>
-	            <dt>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute is greater than <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_nothing">HAVE_NOTHING</a></code>
-                    </dt>
-	            <dd>Run the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#fatal-decode-error">media data is corrupted</a> steps of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a>.</dd>
-	          </dl>
-	        </dd>
-                <dt>Otherwise</dt>
-                <dd>Throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_access_err">INVALID_ACCESS_ERR</a></code> exception.</dd>
+                  <ol>
+                    <li>If <code><a href="#widl-SourceBuffer-updating">updating</a></code> equals true, then run the <a href="#sourcebuffer-append-error">append error algorithm</a>.</li>
+                    <li>
+                  <dl class="switch">
+                    <dt>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute equals <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_nothing">HAVE_NOTHING</a></code>
+                        </dt>
+                    <dd>Run the "<i>If the media data can be fetched but is found by inspection to be in an unsupported format, or can otherwise not be rendered at all</i>" steps of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a>.</dd>
+                    <dt>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute is greater than <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_nothing">HAVE_NOTHING</a></code>
+                        </dt>
+                    <dd>Run the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#fatal-decode-error">media data is corrupted</a> steps of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a>.</dd>
+                  </dl>
+                    </li>
+                  </ol>
+            </dd>
               </dl>
             </li>
           </ol>
@@ -1182,13 +1210,13 @@
       </section>
     </section>
 
-    <section id="sourcebuffer" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-      <!--OddPage--><h2 aria-level="1" role="heading" id="h2_sourcebuffer"><span class="secno">3. </span>SourceBuffer Object</h2>
+    <section id="sourcebuffer" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#sourcebuffer">
+      <!--OddPage--><h2 id="h2_sourcebuffer" role="heading" aria-level="1"><span class="secno">3. </span>SourceBuffer Object</h2>
 
 
       <pre class="idl"><span class="idlEnum" id="idl-def-AppendMode">enum <span class="idlEnumID">AppendMode</span> {
-    "<a href="#idl-def-AppendMode.segments" class="idlEnumItem">segments</a>",
-    "<a href="#idl-def-AppendMode.sequence" class="idlEnumItem">sequence</a>"
+    "<a class="idlEnumItem" href="#idl-def-AppendMode.segments">segments</a>",
+    "<a class="idlEnumItem" href="#idl-def-AppendMode.sequence">sequence</a>"
 };</span></pre><table class="simple"><tbody><tr><th colspan="2">Enumeration description</th></tr><tr><td><code id="idl-def-AppendMode.segments">segments</code></td><td>
           <p>The timestamps in the media segment determine where the <a href="#coded-frame">coded frames</a> are placed in the presentation. Media segments can be appended in any order.</p>
         </td></tr><tr><td><code id="idl-def-AppendMode.sequence">sequence</code></td><td>
@@ -1200,7 +1228,7 @@
         </td></tr></tbody></table>
 
       <pre class="idl"><span class="idlInterface" id="idl-def-SourceBuffer">interface <span class="idlInterfaceID">SourceBuffer</span> : <span class="idlSuperclass">EventTarget</span> {
-<span class="idlAttribute">                attribute <span class="idlAttrType"><a href="#idl-def-AppendMode" class="idlType"><code>AppendMode</code></a></span>          <span class="idlAttrName"><a href="#widl-SourceBuffer-mode">mode</a></span>;</span>
+<span class="idlAttribute">                attribute <span class="idlAttrType"><a class="idlType" href="#idl-def-AppendMode"><code>AppendMode</code></a></span>          <span class="idlAttrName"><a href="#widl-SourceBuffer-mode">mode</a></span>;</span>
 <span class="idlAttribute">    readonly    attribute <span class="idlAttrType">boolean</span>             <span class="idlAttrName"><a href="#widl-SourceBuffer-updating">updating</a></span>;</span>
 <span class="idlAttribute">    readonly    attribute <span class="idlAttrType">TimeRanges</span>          <span class="idlAttrName"><a href="#widl-SourceBuffer-buffered">buffered</a></span>;</span>
 <span class="idlAttribute">                attribute <span class="idlAttrType">double</span>              <span class="idlAttrName"><a href="#widl-SourceBuffer-timestampOffset">timestampOffset</a></span>;</span>
@@ -1213,8 +1241,9 @@
 <span class="idlMethod">    <span class="idlMethType">void</span> <span class="idlMethName"><a href="#widl-SourceBuffer-appendBuffer-void-ArrayBufferView-data">appendBuffer</a></span> (<span class="idlParam"><span class="idlParamType">ArrayBufferView</span> <span class="idlParamName">data</span></span>);</span>
 <span class="idlMethod">    <span class="idlMethType">void</span> <span class="idlMethName"><a href="#widl-SourceBuffer-appendStream-void-Stream-stream-unsigned-long-long-maxSize">appendStream</a></span> (<span class="idlParam"><span class="idlParamType">Stream</span> <span class="idlParamName">stream</span></span>, <span class="idlParam">[<span class="extAttr">EnforceRange</span>] optional <span class="idlParamType">unsigned long long</span> <span class="idlParamName">maxSize</span></span>);</span>
 <span class="idlMethod">    <span class="idlMethType">void</span> <span class="idlMethName"><a href="#widl-SourceBuffer-abort-void">abort</a></span> ();</span>
-<span class="idlMethod">    <span class="idlMethType">void</span> <span class="idlMethName"><a href="#widl-SourceBuffer-remove-void-double-start-double-end">remove</a></span> (<span class="idlParam"><span class="idlParamType">double</span> <span class="idlParamName">start</span></span>, <span class="idlParam"><span class="idlParamType">double</span> <span class="idlParamName">end</span></span>);</span>
-};</span></pre><section id="attributes-1"><h3 aria-level="2" role="heading" id="h3_attributes-1"><span class="secno">3.1 </span>Attributes</h3><dl class="attributes"><dt id="widl-SourceBuffer-appendWindowEnd"><code>appendWindowEnd</code> of type <span class="idlAttrType">unrestricted double</span>,            </dt><dd>
+<span class="idlMethod">    <span class="idlMethType">void</span> <span class="idlMethName"><a href="#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end">remove</a></span> (<span class="idlParam"><span class="idlParamType">double</span> <span class="idlParamName">start</span></span>, <span class="idlParam"><span class="idlParamType">unrestricted double</span> <span class="idlParamName">end</span></span>);</span>
+<span class="idlAttribute">                attribute <span class="idlAttrType"><a class="idlType" href="#idl-def-TrackDefaultList"><code>TrackDefaultList</code></a></span>    <span class="idlAttrName"><a href="#widl-SourceBuffer-trackDefaults">trackDefaults</a></span>;</span>
+};</span></pre><section id="attributes-1"><h3 id="h3_attributes-1" role="heading" aria-level="2"><span class="secno">3.1 </span>Attributes</h3><dl class="attributes"><dt id="widl-SourceBuffer-appendWindowEnd"><code>appendWindowEnd</code> of type <span class="idlAttrType">unrestricted double</span>,            </dt><dd>
           <p>The <a href="#presentation-timestamp">presentation timestamp</a> for the end of the <a href="#append-window">append window</a>. This attribute is initially set to positive Infinity.</p>
           <p>On getting, Return the initial value or the last value that was successfully set.</p>
           <p>On setting, run the following steps:</p>
@@ -1228,7 +1257,7 @@
             <li>Update the attribute to the new value.</li>
           </ol>
         </dd><dt id="widl-SourceBuffer-appendWindowStart"><code>appendWindowStart</code> of type <span class="idlAttrType">double</span>,            </dt><dd>
-          <p>The <a href="#presentation-timestamp">presentation timestamp</a> for the start of the <a href="#append-window">append window</a>. This attribute is initially set to 0.</p>
+          <p>The <a href="#presentation-timestamp">presentation timestamp</a> for the start of the <a href="#append-window">append window</a>. This attribute is initially set to the <a href="#presentation-start-time">presentation start time</a>.</p>
           <p>On getting, Return the initial value or the last value that was successfully set.</p>
           <p>On setting, run the following steps:</p>
           <ol>
@@ -1242,38 +1271,49 @@
         </dd><dt id="widl-SourceBuffer-audioTracks"><code>audioTracks</code> of type <span class="idlAttrType">AudioTrackList</span>, readonly   </dt><dd>
           The list of <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#audiotrack">AudioTrack</a></code> objects created by this object.
         </dd><dt id="widl-SourceBuffer-buffered"><code>buffered</code> of type <span class="idlAttrType">TimeRanges</span>, readonly   </dt><dd>
-          <p>Indicates what <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#timeranges">TimeRanges</a></code> are buffered in the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a>.</p>
+          <p>Indicates what <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#timeranges">TimeRanges</a></code> are buffered in the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a>.</p>
           <p>When the attribute is read the following steps must occur:</p>
           <ol>
             <li>If this object has been removed from the <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code> attribute of the <a href="#parent-media-source">parent media source</a> then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and abort these steps.</li>
-            <li>Return a new static <a href="http://www.w3.org/TR/html5/embedded-content-0.html#normalized-timeranges-object">normalized TimeRanges object</a> for the <a href="#media-segment">media segments</a> buffered.</li>
+            <li>Let <var>highest end time</var> be the largest <a href="#track-buffer-ranges">track buffer ranges</a> end time across all the <a href="#track-buffer">track buffers</a> managed by this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object.</li>
+            <li>Let <var>intersection ranges</var> equal a <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#timeranges">TimeRange</a></code> object containing a single range from 0 to <var>highest end time</var>.</li>
+            <li>For each <a href="#track-buffer">track buffer</a> managed by this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a>, run the following steps:
+              <ol>
+                <li>Let <var>track ranges</var> equal the <a href="#track-buffer-ranges">track buffer ranges</a> for the current <a href="#track-buffer">track buffer</a>.</li>
+                <li>If <code><a href="#widl-MediaSource-readyState">readyState</a></code> is <code><a href="#idl-def-ReadyState.ended">"ended"</a></code>, then set the end time on the last range in <var>track ranges</var> to <var>highest end time</var>.</li>
+                <li>Let <var>new intersection ranges</var> equal the intersection between the <var>intersection ranges</var> and the <var>track ranges</var>.</li>
+                <li>Replace the ranges in <var>intersection ranges</var> with the <var>new intersection ranges</var>.</li>
+              </ol>
+            </li>
+            <li>Return the <var>intersection ranges</var>.</li>
           </ol>
-        </dd><dt id="widl-SourceBuffer-mode"><code>mode</code> of type <span class="idlAttrType"><a href="#idl-def-AppendMode" class="idlType"><code>AppendMode</code></a></span>,            </dt><dd>
-          <p>Controls how a sequence of <a href="#media-segment">media segments</a> are handled.  This attribute is initially set to <code><a href="#idl-def-AppendMode.segments">"segments"</a></code> when the object is created.</p>
+        </dd><dt id="widl-SourceBuffer-mode"><code>mode</code> of type <span class="idlAttrType"><a class="idlType" href="#idl-def-AppendMode"><code>AppendMode</code></a></span>,            </dt><dd>
+          <p>Controls how a sequence of <a href="#media-segment">media segments</a> are handled.  This attribute is initially set by <code><a href="#widl-MediaSource-addSourceBuffer-SourceBuffer-DOMString-type">addSourceBuffer()</a></code> after the object is created.</p>
           <p>On getting, Return the initial value or the last value that was successfully set.</p>
           <p>On setting, run the following steps:</p>
           <ol>
             <li>Let <var>new mode</var> equal the new value being assigned to this attribute.</li>
-            <li>If <var>new mode</var> does not equal <code><a href="#idl-def-AppendMode.segments">"segments"</a></code> or <code><a href="#idl-def-AppendMode.sequence">"sequence"</a></code>, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_access_err">INVALID_ACCESS_ERR</a></code> exception and abort these
-              steps.</li>
+            <li>If <var><a href="#sourcebuffer-generate-timestamps-flag">generate timestamps flag</a></var> equals true and <var>new mode</var> equals
+              <code><a href="#idl-def-AppendMode.segments">"segments"</a></code>, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_access_err">INVALID_ACCESS_ERR</a></code>
+              exception and abort these steps.</li>
             <li>If this object has been removed from the <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code> attribute of the <a href="#parent-media-source">parent media source</a>, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and
               abort these steps.</li>
             <li>If the <code><a href="#widl-SourceBuffer-updating">updating</a></code> attribute equals true, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and abort these steps.</li>
             <li>
               <p>If the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> is in the <code><a href="#idl-def-ReadyState.ended">"ended"</a></code> state then run the following steps:</p>
               <ol>
-	        <li>Set the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> to <code><a href="#idl-def-ReadyState.open">"open"</a></code></li>
-	        <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-sourceopen">sourceopen</a></code> at the <a href="#parent-media-source">parent media source</a>.</li>
+            <li>Set the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> to <code><a href="#idl-def-ReadyState.open">"open"</a></code></li>
+            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-sourceopen">sourceopen</a></code> at the <a href="#parent-media-source">parent media source</a>.</li>
               </ol>
             </li>
             <li>If the <var><a href="#sourcebuffer-append-state">append state</a></var> equals <a href="#sourcebuffer-parsing-media-segment">PARSING_MEDIA_SEGMENT</a>, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> and abort these steps.</li>
-            <li>If the <var>new mode</var> equals <code><a href="#idl-def-AppendMode.sequence">"sequence"</a></code>, then set the <var><a href="#sourcebuffer-group-start-timestamp">group start timestamp</a></var> to the <var><a href="#sourcebuffer-highest-presentation-end-timestamp">highest presentation end timestamp</a></var>.</li>
+            <li>If the <var>new mode</var> equals <code><a href="#idl-def-AppendMode.sequence">"sequence"</a></code>, then set the <var><a href="#sourcebuffer-group-start-timestamp">group start timestamp</a></var> to the <var><a href="#sourcebuffer-group-end-timestamp">group end timestamp</a></var>.</li>
             <li>Update the attribute to <var>new mode</var>.</li>
           </ol>
         </dd><dt id="widl-SourceBuffer-textTracks"><code>textTracks</code> of type <span class="idlAttrType">TextTrackList</span>, readonly   </dt><dd>
           The list of <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#texttrack">TextTrack</a></code> objects created by this object.
         </dd><dt id="widl-SourceBuffer-timestampOffset"><code>timestampOffset</code> of type <span class="idlAttrType">double</span>,            </dt><dd>
-          <p>Controls the offset applied to timestamps inside subsequent <a href="#media-segment">media segments</a> that are appended to this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a>. The <code><a href="#widl-SourceBuffer-timestampOffset">timestampOffset</a></code> is initially set to 0 which indicates that no offset is being applied.</p>
+          <p>Controls the offset applied to timestamps inside subsequent <a href="#media-segment">media segments</a> that are appended to this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a>. The <code><a href="#widl-SourceBuffer-timestampOffset">timestampOffset</a></code> is initially set to 0 which indicates that no offset is being applied.</p>
           <p>On getting, Return the initial value or the last value that was successfully set.</p>
           <p>On setting, run the following steps:</p>
           <ol>
@@ -1283,20 +1323,32 @@
             <li>
               <p>If the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> is in the <code><a href="#idl-def-ReadyState.ended">"ended"</a></code> state then run the following steps:</p>
               <ol>
-	        <li>Set the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> to <code><a href="#idl-def-ReadyState.open">"open"</a></code></li>
-	        <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-sourceopen">sourceopen</a></code> at the <a href="#parent-media-source">parent media source</a>.</li>
+            <li>Set the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> to <code><a href="#idl-def-ReadyState.open">"open"</a></code></li>
+            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-sourceopen">sourceopen</a></code> at the <a href="#parent-media-source">parent media source</a>.</li>
               </ol>
             </li>
             <li>If the <var><a href="#sourcebuffer-append-state">append state</a></var> equals <a href="#sourcebuffer-parsing-media-segment">PARSING_MEDIA_SEGMENT</a>, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> and abort these steps.</li>
             <li>If the <code><a href="#widl-SourceBuffer-mode">mode</a></code> attribute equals <code><a href="#idl-def-AppendMode.sequence">"sequence"</a></code>, then set the <var><a href="#sourcebuffer-group-start-timestamp">group start timestamp</a></var> to <var>new timestamp offset</var>.</li>
             <li>Update the attribute to <var>new timestamp offset</var>.</li>
           </ol>
+        </dd><dt id="widl-SourceBuffer-trackDefaults"><code>trackDefaults</code> of type <span class="idlAttrType"><a class="idlType" href="#idl-def-TrackDefaultList"><code>TrackDefaultList</code></a></span>,            </dt><dd>
+          <p>Specifies the default values to use if kind and/or language information is not available in the
+            <a href="#init-segment">initialization segment</a> when the <a href="#sourcebuffer-init-segment-received">initialization segment received algorithm</a> needs
+            to create track objects. This attribute is initially set to an empty <a class="idlType" href="#idl-def-TrackDefaultList"><code>TrackDefaultList</code></a> object.</p>
+          <p>On getting, Return the initial value or the last value that was successfully set.</p>
+          <p>On setting, run the following steps:</p>
+          <ol>
+            <li>If this object has been removed from the <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code> attribute of the <a href="#parent-media-source">parent media source</a>, then throw an
+              <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and abort these steps.</li>
+            <li>If the <code><a href="#widl-SourceBuffer-updating">updating</a></code> attribute equals true, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and abort these steps.</li>
+            <li>Update the attribute to the new value.</li>
+          </ol>
         </dd><dt id="widl-SourceBuffer-updating"><code>updating</code> of type <span class="idlAttrType">boolean</span>, readonly   </dt><dd>
-          <p>Indicates whether the asynchronous continuation of an <code><a href="#widl-SourceBuffer-appendBuffer-void-ArrayBufferView-data">appendBuffer()</a></code>, <code><a href="#widl-SourceBuffer-appendStream-void-Stream-stream-unsigned-long-long-maxSize">appendStream()</a></code>, or <code><a href="#widl-SourceBuffer-remove-void-double-start-double-end">remove()</a></code>
+          <p>Indicates whether the asynchronous continuation of an <code><a href="#widl-SourceBuffer-appendBuffer-void-ArrayBufferView-data">appendBuffer()</a></code>, <code><a href="#widl-SourceBuffer-appendStream-void-Stream-stream-unsigned-long-long-maxSize">appendStream()</a></code>, or <code><a href="#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end">remove()</a></code>
             operation is still being processed. This attribute is initially set to false when the object is created.</p>
         </dd><dt id="widl-SourceBuffer-videoTracks"><code>videoTracks</code> of type <span class="idlAttrType">VideoTrackList</span>, readonly   </dt><dd>
           The list of <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#videotrack">VideoTrack</a></code> objects created by this object.
-        </dd></dl></section><section id="methods-1"><h3 aria-level="2" role="heading" id="h3_methods-1"><span class="secno">3.2 </span>Methods</h3><dl class="methods"><dt id="widl-SourceBuffer-abort-void"><code>abort</code></dt><dd>
+        </dd></dl></section><section id="methods-1"><h3 id="h3_methods-1" role="heading" aria-level="2"><span class="secno">3.2 </span>Methods</h3><dl class="methods"><dt id="widl-SourceBuffer-abort-void"><code>abort</code></dt><dd>
           <p>Aborts the current segment and resets the segment parser.</p>
 
           
@@ -1305,14 +1357,14 @@
             <li>If the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> is not in the <code><a href="#idl-def-ReadyState.open">"open"</a></code> state then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and abort these steps.</li>
             <li>If the <code><a href="#widl-SourceBuffer-updating">updating</a></code> attribute equals true, then run the following steps:
               <ol>
-                <li>Abort the <a href="#sourcebuffer-buffer-append">buffer append </a> and <a href="#sourcebuffer-stream-append-loop">stream append loop</a> algorithms if they are running.</li>
+                <li>Abort the <a href="#sourcebuffer-buffer-append">buffer append</a> and <a href="#sourcebuffer-stream-append-loop">stream append loop</a> algorithms if they are running.</li>
                 <li>Set the <code><a href="#widl-SourceBuffer-updating">updating</a></code> attribute to false.</li>
-                <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-abort">abort</a></code> at this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object.</li>
-                <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-updateend">updateend</a></code> at this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object.</li>
+                <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-abort">abort</a></code> at this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object.</li>
+                <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-updateend">updateend</a></code> at this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object.</li>
               </ol>
             </li>
             <li>Run the <a href="#sourcebuffer-reset-parser-state">reset parser state algorithm</a>.</li>
-            <li>Set <code><a href="#widl-SourceBuffer-appendWindowStart">appendWindowStart</a></code> to 0.</li>
+            <li>Set <code><a href="#widl-SourceBuffer-appendWindowStart">appendWindowStart</a></code> to the <a href="#presentation-start-time">presentation start time</a>.</li>
             <li>Set <code><a href="#widl-SourceBuffer-appendWindowEnd">appendWindowEnd</a></code> to positive Infinity.</li>
           </ol></dd><dt id="widl-SourceBuffer-appendBuffer-void-ArrayBuffer-data"><code>appendBuffer</code></dt><dd>
           <p>Appends the segment data in an ArrayBuffer[<cite><a class="bibref" href="#bib-TYPED-ARRAYS">TYPED-ARRAYS</a></cite>] to the source buffer.</p>
@@ -1322,54 +1374,53 @@
 
           
         <table class="parameters"><tbody><tr><th>Parameter</th><th>Type</th><th>Nullable</th><th>Optional</th><th>Description</th></tr><tr><td class="prmName">data</td><td class="prmType"><code>ArrayBufferView</code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptFalse"><span role="img" aria-label="False">✘</span></td><td class="prmDesc"></td></tr></tbody></table><div><em>Return type: </em><code>void</code></div><p>When this method is invoked, the user agent must run the following steps:</p><ol class="method-algorithm">
-            <li>If <var>data</var> is null then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_access_err">INVALID_ACCESS_ERR</a></code> exception and abort these steps.</li>
             <li>Run the <a href="#sourcebuffer-prepare-append">prepare append</a> algorithm.</li>
             <li>Add <var>data</var> to the end of the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var>.</li>
             <li>Set the <code><a href="#widl-SourceBuffer-updating">updating</a></code> attribute to true.</li>
-            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-updatestart">updatestart</a></code> at this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object.</li>
-            <li>Asynchronously run the <a href="#sourcebuffer-buffer-append">buffer append </a> algorithm.</li>
+            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-updatestart">updatestart</a></code> at this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object.</li>
+            <li>Asynchronously run the <a href="#sourcebuffer-buffer-append">buffer append</a> algorithm.</li>
           </ol></dd><dt id="widl-SourceBuffer-appendStream-void-Stream-stream-unsigned-long-long-maxSize"><code>appendStream</code></dt><dd>
-          <p>Appends segment data to the source buffer from a <code><a href="http://www.w3.org/TR/2013/WD-streams-api-20131105/#idl-def-Stream" class="idlType">Stream</a></code>[<cite><a class="bibref" href="#bib-STREAMS-API">STREAMS-API</a></cite>].</p>
+          <p>Appends segment data to the source buffer from a <code><a class="idlType" href="http://www.w3.org/TR/2013/WD-streams-api-20131105/#idl-def-Stream">Stream</a></code>[<cite><a class="bibref" href="#bib-STREAMS-API">STREAMS-API</a></cite>].</p>
 
           
         <table class="parameters"><tbody><tr><th>Parameter</th><th>Type</th><th>Nullable</th><th>Optional</th><th>Description</th></tr><tr><td class="prmName">stream</td><td class="prmType"><code>Stream</code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptFalse"><span role="img" aria-label="False">✘</span></td><td class="prmDesc"></td></tr><tr><td class="prmName">maxSize</td><td class="prmType"><code>unsigned long long</code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptTrue"><span role="img" aria-label="True">✔</span></td><td class="prmDesc"></td></tr></tbody></table><div><em>Return type: </em><code>void</code></div><p>When this method is invoked, the user agent must run the following steps:</p><ol class="method-algorithm">
-            <li>If <var>stream</var> is null then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_access_err">INVALID_ACCESS_ERR</a></code> exception and abort these steps.</li>
             <li>Run the <a href="#sourcebuffer-prepare-append">prepare append</a> algorithm.</li>
             <li>Set the <code><a href="#widl-SourceBuffer-updating">updating</a></code> attribute to true.</li>
-            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-updatestart">updatestart</a></code> at this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object.</li>
+            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-updatestart">updatestart</a></code> at this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object.</li>
             <li>Asynchronously run the <a href="#sourcebuffer-stream-append-loop">stream append loop</a> algorithm with <var>stream</var> and <var>maxSize</var>.</li>
-          </ol></dd><dt id="widl-SourceBuffer-remove-void-double-start-double-end"><code>remove</code></dt><dd>
+          </ol></dd><dt id="widl-SourceBuffer-remove-void-double-start-unrestricted-double-end"><code>remove</code></dt><dd>
           <p>Removes media for a specific time range.</p>
 
           
 
-        <table class="parameters"><tbody><tr><th>Parameter</th><th>Type</th><th>Nullable</th><th>Optional</th><th>Description</th></tr><tr><td class="prmName">start</td><td class="prmType"><code>double</code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptFalse"><span role="img" aria-label="False">✘</span></td><td class="prmDesc"></td></tr><tr><td class="prmName">end</td><td class="prmType"><code>double</code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptFalse"><span role="img" aria-label="False">✘</span></td><td class="prmDesc"></td></tr></tbody></table><div><em>Return type: </em><code>void</code></div><p>When this method is invoked, the user agent must run the following steps:</p><ol class="method-algorithm">
+        <table class="parameters"><tbody><tr><th>Parameter</th><th>Type</th><th>Nullable</th><th>Optional</th><th>Description</th></tr><tr><td class="prmName">start</td><td class="prmType"><code>double</code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptFalse"><span role="img" aria-label="False">✘</span></td><td class="prmDesc"></td></tr><tr><td class="prmName">end</td><td class="prmType"><code>unrestricted double</code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptFalse"><span role="img" aria-label="False">✘</span></td><td class="prmDesc"></td></tr></tbody></table><div><em>Return type: </em><code>void</code></div><p>When this method is invoked, the user agent must run the following steps:</p><ol class="method-algorithm">
+            <li>If <code><a href="#widl-MediaSource-duration">duration</a></code> equals NaN, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_access_err">INVALID_ACCESS_ERR</a></code> exception and abort these steps.</li>
             <li>If <var>start</var> is negative or greater than <code><a href="#widl-MediaSource-duration">duration</a></code>, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_access_err">INVALID_ACCESS_ERR</a></code> exception and abort these steps.</li>
-            <li>If <var>end</var> is less than or equal to <var>start</var>, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_access_err">INVALID_ACCESS_ERR</a></code> exception and abort these steps.</li>
+            <li>If <var>end</var> is less than or equal to <var>start</var> or <var>end</var> equals NaN, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_access_err">INVALID_ACCESS_ERR</a></code> exception and abort these steps.</li>
             <li>If this object has been removed from the <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code> attribute of the <a href="#parent-media-source">parent media source</a> then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and abort these steps.</li>
             <li>If the <code><a href="#widl-SourceBuffer-updating">updating</a></code> attribute equals true, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and abort these steps.</li>
             <li>
               <p>If the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> is in the <code><a href="#idl-def-ReadyState.ended">"ended"</a></code> state then run
                 the following steps:</p>
               <ol>
-	        <li>Set the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> to <code><a href="#idl-def-ReadyState.open">"open"</a></code></li>
-	        <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-sourceopen">sourceopen</a></code> at the <a href="#parent-media-source">parent media source</a> .</li>
+            <li>Set the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> to <code><a href="#idl-def-ReadyState.open">"open"</a></code></li>
+            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-sourceopen">sourceopen</a></code> at the <a href="#parent-media-source">parent media source</a> .</li>
               </ol>
             </li>
             <li>Set the <code><a href="#widl-SourceBuffer-updating">updating</a></code> attribute to true.</li>
-            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-updatestart">updatestart</a></code> at this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object.</li>
+            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-updatestart">updatestart</a></code> at this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object.</li>
             <li>Return control to the caller and run the rest of the steps asynchronously.</li>
             <li>Run the <a href="#sourcebuffer-coded-frame-removal">coded frame removal algorithm</a> with <var>start</var> and <var>end</var> as the start and end of the removal range.</li>
             <li>Set the <code><a href="#widl-SourceBuffer-updating">updating</a></code> attribute to false.</li>
-            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-update">update</a></code> at this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object.</li>
-            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-updateend">updateend</a></code> at this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object.</li>
+            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-update">update</a></code> at this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object.</li>
+            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-updateend">updateend</a></code> at this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object.</li>
        </ol></dd></dl></section>
 
-      <section id="track-buffers" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-        <h3 aria-level="2" role="heading" id="h3_track-buffers"><span class="secno">3.3 </span>Track Buffers</h3>
+      <section id="track-buffers" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#track-buffers">
+        <h3 id="h3_track-buffers" role="heading" aria-level="2"><span class="secno">3.3 </span>Track Buffers</h3>
         <p>A <dfn id="track-buffer">track buffer</dfn> stores the <a href="#track-description">track descriptions</a> and <a href="#coded-frame">coded frames</a> for an individual
           track. The track buffer is updated as <a href="#init-segment">initialization segments</a> and <a href="#media-segment">media segments</a> are appended to the
-          <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a>.</p>
+          <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a>.</p>
 
         <p>Each <a href="#track-buffer">track buffer</a> has a <dfn id="last-decode-timestamp">last decode timestamp</dfn> variable that stores
           the decode timestamp of the last <a href="#coded-frame">coded frame</a> appended in the current <a href="#coded-frame-group">coded frame group</a>. The variable is initially
@@ -1387,10 +1438,13 @@
           the track buffer is waiting for a <a href="#random-access-point">random access point</a> <a href="#coded-frame">coded frame</a>. The variable is initially set to true to
           indicate that <a href="#random-access-point">random access point</a> <a href="#coded-frame">coded frame</a> is needed before anything can be added to the
           <a href="#track-buffer">track buffer</a>.</p>
+
+        <p>Each <a href="#track-buffer">track buffer</a> has a <dfn id="track-buffer-ranges">track buffer ranges</dfn> variable that represents the presentation time ranges occupied by the <a href="#coded-frame">coded frames</a>
+          currently stored in the track buffer. For specification purposes, this information is treated as if it were stored in a <a href="http://www.w3.org/TR/html5/embedded-content-0.html#normalized-timeranges-object">normalized TimeRanges object</a>.</p>
       </section>
 
-      <section id="sourcebuffer-events" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-        <h3 aria-level="2" role="heading" id="h3_sourcebuffer-events"><span class="secno">3.4 </span>Event Summary</h3>
+      <section id="sourcebuffer-events" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#sourcebuffer-events">
+        <h3 id="h3_sourcebuffer-events" role="heading" aria-level="2"><span class="secno">3.4 </span>Event Summary</h3>
         <table class="old-table">
           <thead>
             <tr>
@@ -1429,15 +1483,15 @@
         </table>
       </section>
 
-      <section id="sourcebuffer-algorithms" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-        <h3 aria-level="2" role="heading" id="h3_sourcebuffer-algorithms"><span class="secno">3.5 </span>Algorithms</h3>
+      <section id="sourcebuffer-algorithms" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#sourcebuffer-algorithms">
+        <h3 id="h3_sourcebuffer-algorithms" role="heading" aria-level="2"><span class="secno">3.5 </span>Algorithms</h3>
 
-        <section id="sourcebuffer-segment-parser-loop" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-          <h4 aria-level="3" role="heading" id="h4_sourcebuffer-segment-parser-loop"><span class="secno">3.5.1 </span>Segment Parser Loop</h4>
+        <section id="sourcebuffer-segment-parser-loop" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#sourcebuffer-segment-parser-loop">
+          <h4 id="h4_sourcebuffer-segment-parser-loop" role="heading" aria-level="3"><span class="secno">3.5.1 </span>Segment Parser Loop</h4>
           <p>All SourceBuffer objects have an internal <dfn id="sourcebuffer-append-state">append state</dfn> variable that keeps track of the high-level segment parsing state. It is initially set to <a href="#sourcebuffer-waiting-for-segment">WAITING_FOR_SEGMENT</a> and can transition to the following states as data is appended.</p>
           <table class="old-table">
             <thead>
-	      <tr>
+          <tr>
                 <th>Append state name</th>
                 <th>Description</th>
               </tr>
@@ -1451,8 +1505,8 @@
                 <td><dfn id="sourcebuffer-parsing-init-segment">PARSING_INIT_SEGMENT</dfn></td>
                 <td>Currently parsing an <a href="#init-segment">initialization segment</a>.</td>
               </tr>
-	      <tr>
-	        <td><dfn id="sourcebuffer-parsing-media-segment">PARSING_MEDIA_SEGMENT</dfn></td>
+          <tr>
+            <td><dfn id="sourcebuffer-parsing-media-segment">PARSING_MEDIA_SEGMENT</dfn></td>
                 <td>Currently parsing a <a href="#media-segment">media segment</a>.</td>
               </tr>
             </tbody>
@@ -1470,11 +1524,19 @@
             <code><a href="#widl-SourceBuffer-timestampOffset">timestampOffset</a></code> attribute is set, or the <a href="#sourcebuffer-coded-frame-processing">coded frame processing algorithm</a> runs.
           </p>
 
-          <p>The <dfn id="sourcebuffer-highest-presentation-end-timestamp">highest presentation end timestamp</dfn> variable stores the highest presentation
-            end timestamp encountered in the current <a href="#coded-frame-group">coded frame group</a>. It is set to 0 when the SourceBuffer object is created and gets updated
+          <p>The <dfn id="sourcebuffer-group-end-timestamp">group end timestamp</dfn> variable stores the
+            highest <a href="#coded-frame-end-timestamp">coded frame end timestamp</a> across all <a href="#coded-frame">coded frames</a> in
+            the current <a href="#coded-frame-group">coded frame group</a>. It is set to 0 when the SourceBuffer object is created and gets updated
             by the <a href="#sourcebuffer-coded-frame-processing">coded frame processing algorithm</a>.
           </p>
+          <div class="note"><div class="note-title" id="h_note_16" role="heading" aria-level="4"><span>Note</span></div><p>The <var><a href="#sourcebuffer-group-end-timestamp">group end timestamp</a></var> stores the highest <a href="#coded-frame-end-timestamp">coded frame end timestamp</a> across all <a href="#track-buffer">track buffers</a> in a <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a>. Therefore, care should be taken in setting the <code><a href="#widl-SourceBuffer-mode">mode</a></code> attribute when appending multiplexed segments in which the timestamps are not aligned across tracks.
+          </p></div>
 
+          <p>The <dfn id="sourcebuffer-generate-timestamps-flag">generate timestamps flag</dfn> is a
+            boolean variable that keeps track of whether timestamps need to be generated for the
+            <a href="#coded-frame">coded frames</a> passed to the <a href="#sourcebuffer-coded-frame-processing">coded frame processing algorithm</a>.
+            This flag is set by <code><a href="#widl-MediaSource-addSourceBuffer-SourceBuffer-DOMString-type">addSourceBuffer()</a></code> when the SourceBuffer object is created.
+          </p>
           <p>When the segment parser loop algorithm is invoked, run the following steps:</p>
 
           <ol>
@@ -1483,49 +1545,49 @@
               <a href="#end-of-stream-algorithm">end of stream algorithm</a> with the <var>error</var> parameter set to <code><a href="#idl-def-EndOfStreamError.decode">"decode"</a></code> and abort this algorithm.</li>
             <li>Remove any bytes that the <a href="#byte-stream-format-specs">byte stream format specifications</a> say must be ignored from the start of the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var>.</li>
             <li>
-	      <p>If the <var><a href="#sourcebuffer-append-state">append state</a></var> equals <a href="#sourcebuffer-waiting-for-segment">WAITING_FOR_SEGMENT</a>, then run the following steps:</p>
-	      <ol>
-	        <li>If the beginning of the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> indicates the start of an <a href="#init-segment">initialization segment</a>, set the <var><a href="#sourcebuffer-append-state">append state</a></var> to <a href="#sourcebuffer-parsing-init-segment">PARSING_INIT_SEGMENT</a>.</li>
-	        <li>If the beginning of the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> indicates the start of a <a href="#media-segment">media segment</a>, set <var><a href="#sourcebuffer-append-state">append state</a></var> to <a href="#sourcebuffer-parsing-media-segment">PARSING_MEDIA_SEGMENT</a>.</li>
-	        <li>Jump to the <i>loop top</i> step above.</li>
-	      </ol>
+          <p>If the <var><a href="#sourcebuffer-append-state">append state</a></var> equals <a href="#sourcebuffer-waiting-for-segment">WAITING_FOR_SEGMENT</a>, then run the following steps:</p>
+          <ol>
+            <li>If the beginning of the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> indicates the start of an <a href="#init-segment">initialization segment</a>, set the <var><a href="#sourcebuffer-append-state">append state</a></var> to <a href="#sourcebuffer-parsing-init-segment">PARSING_INIT_SEGMENT</a>.</li>
+            <li>If the beginning of the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> indicates the start of a <a href="#media-segment">media segment</a>, set <var><a href="#sourcebuffer-append-state">append state</a></var> to <a href="#sourcebuffer-parsing-media-segment">PARSING_MEDIA_SEGMENT</a>.</li>
+            <li>Jump to the <i>loop top</i> step above.</li>
+          </ol>
             </li>
             <li>
-	      <p>If the <var><a href="#sourcebuffer-append-state">append state</a></var> equals <a href="#sourcebuffer-parsing-init-segment">PARSING_INIT_SEGMENT</a>, then run the following steps:</p>
-	      <ol>
-	        <li>If the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> does not contain a complete <a href="#init-segment">initialization segment</a> yet, then jump to the <i>need more data</i> step below.</li>
-	        <li>Run the <a href="#sourcebuffer-init-segment-received">initialization segment received algorithm</a>.</li>
-	        <li>Remove the <a href="#init-segment">initialization segment</a> bytes from the beginning of the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var>.</li>
-	        <li>Set <var><a href="#sourcebuffer-append-state">append state</a></var> to <a href="#sourcebuffer-waiting-for-segment">WAITING_FOR_SEGMENT</a>.</li>
-	        <li>Jump to the <i>loop top</i> step above.</li>
-	      </ol>
+          <p>If the <var><a href="#sourcebuffer-append-state">append state</a></var> equals <a href="#sourcebuffer-parsing-init-segment">PARSING_INIT_SEGMENT</a>, then run the following steps:</p>
+          <ol>
+            <li>If the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> does not contain a complete <a href="#init-segment">initialization segment</a> yet, then jump to the <i>need more data</i> step below.</li>
+            <li>Run the <a href="#sourcebuffer-init-segment-received">initialization segment received algorithm</a>.</li>
+            <li>Remove the <a href="#init-segment">initialization segment</a> bytes from the beginning of the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var>.</li>
+            <li>Set <var><a href="#sourcebuffer-append-state">append state</a></var> to <a href="#sourcebuffer-waiting-for-segment">WAITING_FOR_SEGMENT</a>.</li>
+            <li>Jump to the <i>loop top</i> step above.</li>
+          </ol>
             </li>
             <li>
-	      <p>If the <var><a href="#sourcebuffer-append-state">append state</a></var> equals <a href="#sourcebuffer-parsing-media-segment">PARSING_MEDIA_SEGMENT</a>, then run the following steps:</p>
-	      <ol>
+          <p>If the <var><a href="#sourcebuffer-append-state">append state</a></var> equals <a href="#sourcebuffer-parsing-media-segment">PARSING_MEDIA_SEGMENT</a>, then run the following steps:</p>
+          <ol>
                 <li>If the <var><a href="#first-init-segment-flag">first initialization segment flag</a></var> is false, then run the <a href="#end-of-stream-algorithm">end of stream algorithm</a> with the <var>error</var> parameter set to <code><a href="#idl-def-EndOfStreamError.decode">"decode"</a></code> and abort this algorithm.</li>
-	        <li>If the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> does not contain a complete <a href="#media-segment">media segment</a> header yet, then jump to the <i>need more data</i> step below.</li>
-	        <li>If the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> contains one or more complete <a href="#coded-frame">coded frames</a>, then run the
+            <li>If the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> does not contain a complete <a href="#media-segment">media segment</a> header yet, then jump to the <i>need more data</i> step below.</li>
+            <li>If the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> contains one or more complete <a href="#coded-frame">coded frames</a>, then run the
                   <a href="#sourcebuffer-coded-frame-processing">coded frame processing algorithm</a>.
-                  <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_16"><span>Note</span></div><p class="">
+                  <div class="note"><div class="note-title" id="h_note_17" role="heading" aria-level="4"><span>Note</span></div><p>
                     The frequency at which the coded frame processing algorithm is run is implementation-specific. The coded frame processing algorithm may
                     be called when the input buffer contains the complete media segment or it may be called multiple times as complete coded frames are
                     added to the input buffer.
                   </p></div>
                 </li>
-	        <li>If this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> is full and cannot accept more media data, then set the <var><a href="#sourcebuffer-buffer-full-flag">buffer full flag</a></var> to true.</li>
-	        <li>If the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> does not contain a complete <a href="#media-segment">media segment</a>, then jump to the <i>need more data</i> step below.<p></p>
-	        </li><li>Remove the <a href="#media-segment">media segment</a> bytes from the beginning of the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var>.</li>
-	        <li>Set <var><a href="#sourcebuffer-append-state">append state</a></var> to <a href="#sourcebuffer-waiting-for-segment">WAITING_FOR_SEGMENT</a>.</li>
-	        <li>Jump to the <i>loop top</i> step above.</li>
-	      </ol>
+            <li>If this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> is full and cannot accept more media data, then set the <var><a href="#sourcebuffer-buffer-full-flag">buffer full flag</a></var> to true.</li>
+            <li>If the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> does not contain a complete <a href="#media-segment">media segment</a>, then jump to the <i>need more data</i> step below.<p></p>
+            <li>Remove the <a href="#media-segment">media segment</a> bytes from the beginning of the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var>.</li>
+            <li>Set <var><a href="#sourcebuffer-append-state">append state</a></var> to <a href="#sourcebuffer-waiting-for-segment">WAITING_FOR_SEGMENT</a>.</li>
+            <li>Jump to the <i>loop top</i> step above.</li>
+          </ol>
             </li>
             <li><i>Need more data:</i> Return control to the calling algorithm.</li>
           </ol>
         </section>
 
-        <section id="sourcebuffer-reset-parser-state" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-          <h4 aria-level="3" role="heading" id="h4_sourcebuffer-reset-parser-state"><span class="secno">3.5.2 </span>Reset Parser State</h4>
+        <section id="sourcebuffer-reset-parser-state" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#sourcebuffer-reset-parser-state">
+          <h4 id="h4_sourcebuffer-reset-parser-state" role="heading" aria-level="3"><span class="secno">3.5.2 </span>Reset Parser State</h4>
           <p>When the parser state needs to be reset, run the following steps:</p>
           <ol>
             <li>If the <var><a href="#sourcebuffer-append-state">append state</a></var> equals <a href="#sourcebuffer-parsing-media-segment">PARSING_MEDIA_SEGMENT</a> and the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> contains some
@@ -1540,57 +1602,57 @@
           </ol>
         </section>
 
-        <section id="sourcebuffer-append-error" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-          <h4 aria-level="3" role="heading" id="h4_sourcebuffer-append-error"><span class="secno">3.5.3 </span>Append Error Algorithm</h4>
+        <section id="sourcebuffer-append-error" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#sourcebuffer-append-error">
+          <h4 id="h4_sourcebuffer-append-error" role="heading" aria-level="3"><span class="secno">3.5.3 </span>Append Error Algorithm</h4>
           <p>When an error occurs during an append, run the following steps:</p>
           <ol>
             <li>Run the <a href="#sourcebuffer-reset-parser-state">reset parser state algorithm</a>.</li>
             <li>Set the <code><a href="#widl-SourceBuffer-updating">updating</a></code> attribute to false.</li>
-            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-error">error</a></code> at this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object.</li>
-            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-updateend">updateend</a></code> at this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object.</li>
+            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-error">error</a></code> at this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object.</li>
+            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-updateend">updateend</a></code> at this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object.</li>
           </ol>
         </section>
 
-        <section id="sourcebuffer-prepare-append" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-            <h4 aria-level="3" role="heading" id="h4_sourcebuffer-prepare-append"><span class="secno">3.5.4 </span>Prepare Append Algorithm</h4>
-            <p>When an append operation begins, the follow steps are run to validate and prepare the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a>.</p>
+        <section id="sourcebuffer-prepare-append" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#sourcebuffer-prepare-append">
+            <h4 id="h4_sourcebuffer-prepare-append" role="heading" aria-level="3"><span class="secno">3.5.4 </span>Prepare Append Algorithm</h4>
+            <p>When an append operation begins, the follow steps are run to validate and prepare the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a>.</p>
             <ol>
-            <li>If the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> has been removed from the <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code> attribute of the <a href="#parent-media-source">parent media source</a> then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and abort these steps.</li>
+            <li>If the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> has been removed from the <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code> attribute of the <a href="#parent-media-source">parent media source</a> then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and abort these steps.</li>
             <li>If the <code><a href="#widl-SourceBuffer-updating">updating</a></code> attribute equals true, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and abort these steps.</li>
             <li>
               <p>If the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> is in the <code><a href="#idl-def-ReadyState.ended">"ended"</a></code> state then run the following steps:</p>
               <ol>
-	        <li>Set the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> to <code><a href="#idl-def-ReadyState.open">"open"</a></code>
+            <li>Set the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> to <code><a href="#idl-def-ReadyState.open">"open"</a></code>
                 </li>
-	        <li>
+            <li>
                   <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-sourceopen">sourceopen</a></code> at the <a href="#parent-media-source">parent media source</a> .</li>
               </ol>
             </li>
             <li>Run the <a href="#sourcebuffer-coded-frame-eviction">coded frame eviction algorithm</a>.</li>
             <li>
               <p>If the <var><a href="#sourcebuffer-buffer-full-flag">buffer full flag</a></var> equals true, then throw a <code><a href="http://dom.spec.whatwg.org/#dom-domexception-quota_exceeded_err">QUOTA_EXCEEDED_ERR</a></code> exception and abort these step.</p>
-              <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_17"><span>Note</span></div><p class="">This is the signal that the implementation was unable to evict enough data to accomodate the append or the append is too big. The web
-                application should use <code><a href="#widl-SourceBuffer-remove-void-double-start-double-end">remove()</a></code> to explicitly free up space and/or reduce the size of the append.</p></div>
+              <div class="note"><div class="note-title" id="h_note_18" role="heading" aria-level="4"><span>Note</span></div><p>This is the signal that the implementation was unable to evict enough data to accomodate the append or the append is too big. The web
+                application should use <code><a href="#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end">remove()</a></code> to explicitly free up space and/or reduce the size of the append.</p></div>
             </li>
             </ol>
         </section>
 
-        <section id="sourcebuffer-buffer-append" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-          <h4 aria-level="3" role="heading" id="h4_sourcebuffer-buffer-append"><span class="secno">3.5.5 </span>Buffer Append Algorithm</h4>
+        <section id="sourcebuffer-buffer-append" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#sourcebuffer-buffer-append">
+          <h4 id="h4_sourcebuffer-buffer-append" role="heading" aria-level="3"><span class="secno">3.5.5 </span>Buffer Append Algorithm</h4>
           <p>When <code><a href="#widl-SourceBuffer-appendBuffer-void-ArrayBufferView-data">appendBuffer()</a></code> is called, the following steps are run to process the appended data.</p>
           <ol>
             <li>Run the <a href="#sourcebuffer-segment-parser-loop">segment parser loop</a> algorithm.</li>
             <li>If the <a href="#sourcebuffer-segment-parser-loop">segment parser loop</a> algorithm in the previous step was aborted, then abort this algorithm.</li>
             <li>Set the <code><a href="#widl-SourceBuffer-updating">updating</a></code> attribute to false.</li>
-            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-update">update</a></code> at this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object.</li>
-            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-updateend">updateend</a></code> at this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object.</li>
+            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-update">update</a></code> at this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object.</li>
+            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-updateend">updateend</a></code> at this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object.</li>
           </ol>
         </section>
 
-        <section id="sourcebuffer-stream-append-loop" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-          <h4 aria-level="3" role="heading" id="h4_sourcebuffer-stream-append-loop"><span class="secno">3.5.6 </span>Stream Append Loop</h4>
-          <p>When a <code><a href="http://www.w3.org/TR/2013/WD-streams-api-20131105/#idl-def-Stream" class="idlType">Stream</a></code>[<cite><a class="bibref" href="#bib-STREAMS-API">STREAMS-API</a></cite>] is passed to <code><a href="#widl-SourceBuffer-appendStream-void-Stream-stream-unsigned-long-long-maxSize">appendStream()</a></code>, the following steps are run to transfer data from the
-            <code><a href="http://www.w3.org/TR/2013/WD-streams-api-20131105/#idl-def-Stream" class="idlType">Stream</a></code> to the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a>. This algorithm is initialized with the  <var>stream</var> and <var>maxSize</var> parameters
+        <section id="sourcebuffer-stream-append-loop" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#sourcebuffer-stream-append-loop">
+          <h4 id="h4_sourcebuffer-stream-append-loop" role="heading" aria-level="3"><span class="secno">3.5.6 </span>Stream Append Loop</h4>
+          <p>When a <code><a class="idlType" href="http://www.w3.org/TR/2013/WD-streams-api-20131105/#idl-def-Stream">Stream</a></code>[<cite><a class="bibref" href="#bib-STREAMS-API">STREAMS-API</a></cite>] is passed to <code><a href="#widl-SourceBuffer-appendStream-void-Stream-stream-unsigned-long-long-maxSize">appendStream()</a></code>, the following steps are run to transfer data from the
+            <code><a class="idlType" href="http://www.w3.org/TR/2013/WD-streams-api-20131105/#idl-def-Stream">Stream</a></code> to the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a>. This algorithm is initialized with the  <var>stream</var> and <var>maxSize</var> parameters
             from the <code><a href="#widl-SourceBuffer-appendStream-void-Stream-stream-unsigned-long-long-maxSize">appendStream()</a></code> call.
           </p>
           <ol>
@@ -1613,29 +1675,29 @@
             <li>Run the <a href="#sourcebuffer-coded-frame-eviction">coded frame eviction algorithm</a>.</li>
             <li>
               <p>If the <var><a href="#sourcebuffer-buffer-full-flag">buffer full flag</a></var> equals true, then run the <a href="#sourcebuffer-append-error">append error algorithm</a> and abort this algorithm.</p>
-              <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_18"><span>Note</span></div><p class="">The web application should use <code><a href="#widl-SourceBuffer-remove-void-double-start-double-end">remove()</a></code> to free up space in the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a>.</p></div>
+              <div class="note"><div class="note-title" id="h_note_19" role="heading" aria-level="4"><span>Note</span></div><p>The web application should use <code><a href="#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end">remove()</a></code> to free up space in the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a>.</p></div>
             </li>
             <li>Add <var>data</var> to the end of the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var>.</li>
             <li>Run the <a href="#sourcebuffer-segment-parser-loop">segment parser loop</a> algorithm.</li>
             <li>If the <a href="#sourcebuffer-segment-parser-loop">segment parser loop</a> algorithm in the previous step was aborted, then abort this algorithm.</li>
             <li>Jump to the <i>loop top</i> step above.</li>
             <li><i>Loop Done: </i>Set the <code><a href="#widl-SourceBuffer-updating">updating</a></code> attribute to false.</li>
-            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-update">update</a></code> at this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object.</li>
-            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-updateend">updateend</a></code> at this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object.</li>
+            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-update">update</a></code> at this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object.</li>
+            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-updateend">updateend</a></code> at this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object.</li>
           </ol>
         </section>
 
-        <section id="sourcebuffer-init-segment-received" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-          <h4 aria-level="3" role="heading" id="h4_sourcebuffer-init-segment-received"><span class="secno">3.5.7 </span>Initialization Segment Received</h4>
+        <section id="sourcebuffer-init-segment-received" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#sourcebuffer-init-segment-received">
+          <h4 id="h4_sourcebuffer-init-segment-received" role="heading" aria-level="3"><span class="secno">3.5.7 </span>Initialization Segment Received</h4>
           <p>The following steps are run when the <a href="#sourcebuffer-segment-parser-loop">segment parser loop</a> successfully parses a complete <a href="#init-segment">initialization segment</a>:</p>
           <p>Each SourceBuffer object has an internal <dfn id="first-init-segment-flag">first initialization segment flag</dfn> that tracks whether the first <a href="#init-segment">initialization segment</a> has been appended. This flag is set to false when the SourceBuffer is created and updated by the algorithm below.</p>
           <ol>
             <li>Update the <code><a href="#widl-MediaSource-duration">duration</a></code> attribute if it currently equals NaN:
               <dl class="switch">
-	        <dt>If the initialization segment contains a duration:</dt>
-	        <dd>Run the <a href="#duration-change-algorithm">duration change algorithm</a> with <var>new duration</var> set to the duration in the initialization segment.</dd>
-	        <dt>Otherwise:</dt>
-	        <dd>Run the <a href="#duration-change-algorithm">duration change algorithm</a> with <var>new duration</var> set to positive Infinity.</dd>
+            <dt>If the initialization segment contains a duration:</dt>
+            <dd>Run the <a href="#duration-change-algorithm">duration change algorithm</a> with <var>new duration</var> set to the duration in the initialization segment.</dd>
+            <dt>Otherwise:</dt>
+            <dd>Run the <a href="#duration-change-algorithm">duration change algorithm</a> with <var>new duration</var> set to positive Infinity.</dd>
               </dl>
             </li>
             <li>If the <a href="#init-segment">initialization segment</a> has no audio, video, or text tracks, then run the <a href="#end-of-stream-algorithm">end of stream algorithm</a> with the <var>error</var> parameter set to <code><a href="#idl-def-EndOfStreamError.decode">"decode"</a></code> and abort these steps.</li>
@@ -1651,6 +1713,7 @@
                 </li>
                 <li>Add the appropriate <a href="#track-description">track descriptions</a> from this <a href="#init-segment">initialization segment</a> to each of the 
                   <a href="#track-buffer">track buffers</a>.</li>
+                <li>Set the <var><a href="#need-RAP-flag">need random access point flag</a></var> on all track buffers to true.</li>
               </ol>
             </li>
             <li>Let <var>active track flag</var> equal false.</li>
@@ -1659,7 +1722,7 @@
               <ol>
                 <li>If the <a href="#init-segment">initialization segment</a> contains tracks with codecs the user agent does not support, then run the <a href="#end-of-stream-algorithm">end of stream algorithm</a> with the <var>error</var> parameter set to <code><a href="#idl-def-EndOfStreamError.decode">"decode"</a></code>
                   and abort these steps.
-                  <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_19"><span>Note</span></div><p class="">User agents may consider codecs, that would otherwise be supported, as "not supported" here if the codecs were not
+                  <div class="note"><div class="note-title" id="h_note_20" role="heading" aria-level="4"><span>Note</span></div><p>User agents may consider codecs, that would otherwise be supported, as "not supported" here if the codecs were not
                     specified in the <var>type</var> parameter passed to <code><a href="#widl-MediaSource-addSourceBuffer-SourceBuffer-DOMString-type">addSourceBuffer()</a></code>. <br>
                     For example, MediaSource.isTypeSupported('video/webm;codecs="vp8,vorbis"') may return true, but if
                     <code><a href="#widl-MediaSource-addSourceBuffer-SourceBuffer-DOMString-type">addSourceBuffer()</a></code> was called with 'video/webm;codecs="vp8"' and a Vorbis track appears in the
@@ -1669,24 +1732,52 @@
                 <li>
                   <p>For each audio track in the <a href="#init-segment">initialization segment</a>, run following steps:</p>
                   <ol>
-                    <li>Let <var>new audio track</var> be a new <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#audiotrack">AudioTrack</a></code> object.</li>
-                    <li>Generate a unique ID and assign it to the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-audiotrack-id">id</a></code> property on <var>new audio track</var>.</li>
-                    <li>
-                      <p>
-                        If <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-audiotracks">audioTracks</a></code>.<code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-audiotracklist-length">length</a></code> equals 0, then run
-                          the following steps:
-                      </p>
+                    <li>Let <var>audio byte stream track ID</var> be the
+                      <a href="#track-id">Track ID</a> for the current track being processed.</li>
+                    <li>Let <var>audio language</var> be a BCP 47 language tag for the language
+                      specified in the <a href="#init-segment">initialization segment</a> for this track or an empty string if no
+                      language info is present.</li>
+                    <li>If <var>audio language</var> equals an empty string, then run the
+                      <a href="#sourcebuffer-default-track-language">default track language algorithm</a> with <var>byteStreamTrackID</var>
+                      set to <var>audio byte stream track ID</var> and <var>type</var> set to
+                      <code><a href="#idl-def-TrackDefaultType.audio">"audio"</a></code> and assign the value returned by the
+                      algorithm to <var>audio language</var>.</li>
+                    <li>Let <var>audio kinds</var> be an array of kind strings specified in the
+                      <a href="#init-segment">initialization segment</a> for this track or an empty array if no kind information
+                      is provided.</li>
+                    <li>If <var>audio kinds</var> equals an empty array, then run the
+                      <a href="#sourcebuffer-default-track-kinds">default track kinds algorithm</a> with <var>byteStreamTrackID</var>
+                      set to <var>audio byte stream track ID</var> and <var>type</var> set to
+                      <code><a href="#idl-def-TrackDefaultType.audio">"audio"</a></code> and assign the value returned by the
+                      algorithm to <var>audio kinds</var>.</li>
+                    <li>For each value in <var>audio kinds</var>, run the following steps:
                       <ol>
-                        <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-audiotrack-enabled">enabled</a></code> property on <var>new audio track</var> to true.</li>
-                        <li>Set <var>active track flag</var> to true.</li>
+                        <li>Let <var>current audio kind</var> equal the value from <var>audio kinds</var>
+                          for this iteration of the loop.</li>
+                        <li>Let <var>new audio track</var> be a new <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#audiotrack">AudioTrack</a></code> object.</li>
+                        <li>Generate a unique ID and assign it to the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-audiotrack-id">id</a></code> property on <var>new audio track</var>.</li>
+                        <li>Assign <var>audio language</var> to the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-audiotrack-language">language</a></code>
+                          property on <var>new audio track</var>.</li>
+                        <li>Assign <var>current audio kind</var> to the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-audiotrack-kind">kind</a></code>
+                          property on <var>new audio track</var>.</li>
+                        <li>
+                          <p>
+                            If <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-audiotracks">audioTracks</a></code>.<code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-audiotracklist-length">length</a></code> equals 0, then run
+                            the following steps:
+                          </p>
+                          <ol>
+                            <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-audiotrack-enabled">enabled</a></code> property on <var>new audio track</var> to true.</li>
+                            <li>Set <var>active track flag</var> to true.</li>
+                          </ol>
+                        </li>
+                        <li>Add <var>new audio track</var> to the <code><a href="#widl-SourceBuffer-audioTracks">audioTracks</a></code> attribute on this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object.</li>
+                        <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to fire a <a href="http://www.w3.org/TR/html5/infrastructure.html#concept-events-trusted">trusted event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onaddtrack">addtrack</a></code>, that does not bubble and is not cancelable, and that uses the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#trackevent">TrackEvent</a></code> interface, at the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#audiotracklist">AudioTrackList</a></code> object referenced by the
+                          <code><a href="#widl-SourceBuffer-audioTracks">audioTracks</a></code> attribute on this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object.</li>
+                        <li>Add <var>new audio track</var> to the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-audiotracks">audioTracks</a></code> attribute on the HTMLMediaElement.</li>
+                        <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to fire a <a href="http://www.w3.org/TR/html5/infrastructure.html#concept-events-trusted">trusted event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onaddtrack">addtrack</a></code>, that does not bubble and is not cancelable, and that uses the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#trackevent">TrackEvent</a></code> interface, at the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#audiotracklist">AudioTrackList</a></code> object referenced by the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-audiotracks">audioTracks</a></code>
+                          attribute on the HTMLMediaElement.</li>
                       </ol>
                     </li>
-                    <li>Add <var>new audio track</var> to the <code><a href="#widl-SourceBuffer-audioTracks">audioTracks</a></code> attribute on this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object.</li>
-                    <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to fire a <a href="http://www.w3.org/TR/html5/infrastructure.html#concept-events-trusted">trusted event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onaddtrack">addtrack</a></code>, that does not bubble and is not cancelable, and that uses the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#trackevent">TrackEvent</a></code> interface, at the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#audiotracklist">AudioTrackList</a></code> object referenced by the
-                      <code><a href="#widl-SourceBuffer-audioTracks">audioTracks</a></code> attribute on this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object.</li>
-                    <li>Add <var>new audio track</var> to the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-audiotracks">audioTracks</a></code> attribute on the HTMLMediaElement.</li>
-                    <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to fire a <a href="http://www.w3.org/TR/html5/infrastructure.html#concept-events-trusted">trusted event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onaddtrack">addtrack</a></code>, that does not bubble and is not cancelable, and that uses the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#trackevent">TrackEvent</a></code> interface, at the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#audiotracklist">AudioTrackList</a></code> object referenced by the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-audiotracks">audioTracks</a></code>
-                      attribute on the HTMLMediaElement.</li>
                     <li>Create a new <a href="#track-buffer">track buffer</a> to store <a href="#coded-frame">coded frames</a> for this track.</li>
                     <li>Add the <a href="#track-description">track description</a> for this track to the <a href="#track-buffer">track buffer</a>.</li>
                   </ol>
@@ -1694,24 +1785,52 @@
                 <li>
                   <p>For each video track in the <a href="#init-segment">initialization segment</a>, run following steps:</p>
                   <ol>
-                    <li>Let <var>new video track</var> be a new <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#videotrack">VideoTrack</a></code> object.</li>
-                    <li>Generate a unique ID and assign it to the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-videotrack-id">id</a></code> property on <var>new video track</var>.</li>
-                    <li>
-                      <p>
-                        If <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-videotracks">videoTracks</a></code>.<code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-videotracklist-length">length</a></code> equals 0, then run
-                          the following steps:
-                      </p>
+                    <li>Let <var>video byte stream track ID</var> be the
+                      <a href="#track-id">Track ID</a> for the current track being processed.</li>
+                    <li>Let <var>video language</var> be a BCP 47 language tag for the language
+                      specified in the <a href="#init-segment">initialization segment</a> for this track or an empty string if no
+                      language info is present.</li>
+                    <li>If <var>video language</var> equals an empty string, then run the
+                      <a href="#sourcebuffer-default-track-language">default track language algorithm</a> with <var>byteStreamTrackID</var>
+                      set to <var>video byte stream track ID</var> and <var>type</var> set to
+                      <code><a href="#idl-def-TrackDefaultType.video">"video"</a></code> and assign the value returned by the
+                      algorithm to <var>video language</var>.</li>
+                    <li>Let <var>video kinds</var> be an array of kind strings specified in the
+                      <a href="#init-segment">initialization segment</a> for this track or an empty array if no kind information
+                      is provided.</li>
+                    <li>If <var>video kinds</var> equals an empty array, then run the
+                      <a href="#sourcebuffer-default-track-kinds">default track kinds algorithm</a> with <var>byteStreamTrackID</var>
+                      set to <var>video byte stream track ID</var> and <var>type</var> set to
+                      <code><a href="#idl-def-TrackDefaultType.video">"video"</a></code> and assign the value returned by the
+                      algorithm to <var>video kinds</var>.</li>
+                    <li>For each value in <var>video kinds</var>, run the following steps:
                       <ol>
-                        <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-videotrack-selected">selected</a></code> property on <var>new video track</var> to true.</li>
-                        <li>Set <var>active track flag</var> to true.</li>
+                        <li>Let <var>current video kind</var> equal the value from <var>video kinds</var>
+                          for this iteration of the loop.</li>
+                        <li>Let <var>new video track</var> be a new <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#videotrack">VideoTrack</a></code> object.</li>
+                        <li>Generate a unique ID and assign it to the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-videotrack-id">id</a></code> property on <var>new video track</var>.</li>
+                        <li>Assign <var>video language</var> to the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-videotrack-language">language</a></code>
+                          property on <var>new video track</var>.</li>
+                        <li>Assign <var>current video kind</var> to the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-videotrack-kind">kind</a></code>
+                          property on <var>new video track</var>.</li>
+                        <li>
+                          <p>
+                            If <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-videotracks">videoTracks</a></code>.<code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-videotracklist-length">length</a></code> equals 0, then run
+                            the following steps:
+                          </p>
+                          <ol>
+                            <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-videotrack-selected">selected</a></code> property on <var>new video track</var> to true.</li>
+                            <li>Set <var>active track flag</var> to true.</li>
+                          </ol>
+                        </li>
+                        <li>Add <var>new video track</var> to the <code><a href="#widl-SourceBuffer-videoTracks">videoTracks</a></code> attribute on this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object.</li>
+                        <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to fire a <a href="http://www.w3.org/TR/html5/infrastructure.html#concept-events-trusted">trusted event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onaddtrack">addtrack</a></code>, that does not bubble and is not cancelable, and that uses the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#trackevent">TrackEvent</a></code> interface, at the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#videotracklist">VideoTrackList</a></code> object referenced by the <code><a href="#widl-SourceBuffer-videoTracks">videoTracks</a></code> attribute
+                          on this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object.</li>
+                        <li>Add <var>new video track</var> to the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-videotracks">videoTracks</a></code> attribute on the HTMLMediaElement.</li>
+                        <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to fire a <a href="http://www.w3.org/TR/html5/infrastructure.html#concept-events-trusted">trusted event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onaddtrack">addtrack</a></code>, that does not bubble and is not cancelable, and that uses the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#trackevent">TrackEvent</a></code> interface, at the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#videotracklist">VideoTrackList</a></code> object referenced by the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-videotracks">videoTracks</a></code> attribute on the
+                          HTMLMediaElement.</li>
                       </ol>
                     </li>
-                    <li>Add <var>new video track</var> to the <code><a href="#widl-SourceBuffer-videoTracks">videoTracks</a></code> attribute on this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object.</li>
-                    <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to fire a <a href="http://www.w3.org/TR/html5/infrastructure.html#concept-events-trusted">trusted event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onaddtrack">addtrack</a></code>, that does not bubble and is not cancelable, and that uses the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#trackevent">TrackEvent</a></code> interface, at the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#videotracklist">VideoTrackList</a></code> object referenced by the <code><a href="#widl-SourceBuffer-videoTracks">videoTracks</a></code> attribute
-                      on this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object.</li>
-                    <li>Add <var>new video track</var> to the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-videotracks">videoTracks</a></code> attribute on the HTMLMediaElement.</li>
-                    <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to fire a <a href="http://www.w3.org/TR/html5/infrastructure.html#concept-events-trusted">trusted event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onaddtrack">addtrack</a></code>, that does not bubble and is not cancelable, and that uses the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#trackevent">TrackEvent</a></code> interface, at the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#videotracklist">VideoTrackList</a></code> object referenced by the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-videotracks">videoTracks</a></code> attribute on the
-                      HTMLMediaElement.</li>
                     <li>Create a new <a href="#track-buffer">track buffer</a> to store <a href="#coded-frame">coded frames</a> for this track.</li>
                     <li>Add the <a href="#track-description">track description</a> for this track to the <a href="#track-buffer">track buffer</a>.</li>
                   </ol>
@@ -1719,26 +1838,56 @@
                 <li>
                   <p>For each text track in the <a href="#init-segment">initialization segment</a>, run following steps:</p>
                   <ol>
-                    <li>
-                      Let <var>new text track</var> be a new <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#texttrack">TextTrack</a></code> object with its properties populated with the appropriate
-                      information from the <a href="#init-segment">initialization segment</a>.</li>
-                    <li>
-                      If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-mode">mode</a></code> property on <var>new text track</var> equals <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-showing">"showing"</a></code> or
-                      <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-hidden">"hidden"</a></code>, then set <var>active track flag</var> to true.
+                    <li>Let <var>text byte stream track ID</var> be the 
+                      <a href="#track-id">Track ID</a> for the current track being processed.</li>
+                    <li>Let <var>text language</var> be a BCP 47 language tag for the language
+                      specified in the <a href="#init-segment">initialization segment</a> for this track or an empty string if no
+                      language info is present.</li>
+                    <li>If <var>text language</var> equals an empty string, then run the
+                      <a href="#sourcebuffer-default-track-language">default track language algorithm</a> with <var>byteStreamTrackID</var>
+                      set to <var>text byte stream track ID</var> and <var>type</var> set to
+                      <code><a href="#idl-def-TrackDefaultType.text">"text"</a></code> and assign the value returned by the
+                      algorithm to <var>text language</var>.</li>
+                    <li>Let <var>text kinds</var> be an array of kind strings specified in the
+                      <a href="#init-segment">initialization segment</a> for this track or an empty array if no kind information
+                      is provided.</li>
+                    <li>If <var>text kinds</var> equals an empty array, then run the
+                      <a href="#sourcebuffer-default-track-kinds">default track kinds algorithm</a> with <var>byteStreamTrackID</var>
+                      set to <var>text byte stream track ID</var> and <var>type</var> set to
+                      <code><a href="#idl-def-TrackDefaultType.text">"text"</a></code> and assign the value returned by the
+                      algorithm to <var>text kinds</var>.</li>
+                    <li>For each value in <var>text kinds</var>, run the following steps:
+                      <ol>
+                        <li>Let <var>current text kind</var> equal the value from <var>text kinds</var>
+                          for this iteration of the loop.</li>
+                        <li>
+                          Let <var>new text track</var> be a new <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#texttrack">TextTrack</a></code> object.</li>
+                        <li>Generate a unique ID and assign it to the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-id">id</a></code> property on <var>new text track</var>.</li>
+                        <li>Assign <var>text language</var> to the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-language">language</a></code>
+                          property on <var>new text track</var>.</li>
+                        <li>Assign <var>current text kind</var> to the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-kind">kind</a></code>
+                          property on <var>new text track</var>.</li>
+                        <li>Populate the remaining properties on <var>new text track</var> with the
+                          appropriate information from the <a href="#init-segment">initialization segment</a>.
+                        <li>
+                          If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-mode">mode</a></code> property on <var>new text track</var> equals <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-showing">"showing"</a></code> or
+                          <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-hidden">"hidden"</a></code>, then set <var>active track flag</var> to true.
+                        </li>
+                        <li>Add <var>new text track</var> to the <code><a href="#widl-SourceBuffer-textTracks">textTracks</a></code> attribute on this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object.</li>
+                        <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to fire a <a href="http://www.w3.org/TR/html5/infrastructure.html#concept-events-trusted">trusted event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onaddtrack">addtrack</a></code>, that does not bubble and is not cancelable, and that uses the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#trackevent">TrackEvent</a></code> interface, at <code><a href="#widl-SourceBuffer-textTracks">textTracks</a></code> attribute
+                          on this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object.</li>
+                        <li>Add <var>new text track</var> to the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-texttracks">textTracks</a></code> attribute on the HTMLMediaElement.</li>
+                        <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to fire a <a href="http://www.w3.org/TR/html5/infrastructure.html#concept-events-trusted">trusted event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onaddtrack">addtrack</a></code>, that does not bubble and is not cancelable, and that uses the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#trackevent">TrackEvent</a></code> interface, at the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#texttracklist">TextTrackList</a></code> object referenced by the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-texttracks">textTracks</a></code> attribute on the
+                          HTMLMediaElement.</li>
+                      </ol>
                     </li>
-                    <li>Add <var>new text track</var> to the <code><a href="#widl-SourceBuffer-textTracks">textTracks</a></code> attribute on this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object.</li>
-                    <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to fire a <a href="http://www.w3.org/TR/html5/infrastructure.html#concept-events-trusted">trusted event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onaddtrack">addtrack</a></code>, that does not bubble and is not cancelable, and that uses the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#trackevent">TrackEvent</a></code> interface, at <code><a href="#widl-SourceBuffer-textTracks">textTracks</a></code> attribute
-                      on this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object.</li>
-                    <li>Add <var>new text track</var> to the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-texttracks">textTracks</a></code> attribute on the HTMLMediaElement.</li>
-                    <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to fire a <a href="http://www.w3.org/TR/html5/infrastructure.html#concept-events-trusted">trusted event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onaddtrack">addtrack</a></code>, that does not bubble and is not cancelable, and that uses the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#trackevent">TrackEvent</a></code> interface, at the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#texttracklist">TextTrackList</a></code> object referenced by the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-texttracks">textTracks</a></code> attribute on the
-                      HTMLMediaElement.</li>
                     <li>Create a new <a href="#track-buffer">track buffer</a> to store <a href="#coded-frame">coded frames</a> for this track.</li>
                     <li>Add the <a href="#track-description">track description</a> for this track to the <a href="#track-buffer">track buffer</a>.</li>
                   </ol>
                 </li>
                 <li>If <var>active track flag</var> equals true, then run the following steps:
                   <ol>
-                    <li>Add this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> to <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>.</li>
+                    <li>Add this <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> to <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>.</li>
                     <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-addsourcebuffer">addsourcebuffer</a></code> at <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code></li>
                   </ol>
                 </li>
@@ -1752,7 +1901,7 @@
                   If one or more objects in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code> have <var><a href="#first-init-segment-flag">first initialization segment flag</a></var> set to false, then abort
                   these steps.</li>
                 <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_metadata">HAVE_METADATA</a></code>.</li>
-	        <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named  <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-loadedmetadata">loadedmetadata</a></code> at the media element.</li>
+            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named  <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-loadedmetadata">loadedmetadata</a></code> at the media element.</li>
               </ol>
             </li>
             <li>
@@ -1762,45 +1911,108 @@
           </ol>
         </section>
 
-        <section id="sourcebuffer-coded-frame-processing" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-          <h4 aria-level="3" role="heading" id="h4_sourcebuffer-coded-frame-processing"><span class="secno">3.5.8 </span>Coded Frame Processing</h4>
+        <section id="sourcebuffer-default-track-language" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#sourcebuffer-default-track-language">
+          <h4 id="h4_sourcebuffer-default-track-language" role="heading" aria-level="3"><span class="secno">3.5.8 </span>Default track language</h4>
+          <p>The following steps are run when the <a href="#sourcebuffer-init-segment-received">initialization segment received algorithm</a> needs
+            to determine what the default language for a new track should be. This algorithm is initialized
+            with <var>byteStreamTrackID</var> and <var>type</var> parameters when invoked by the
+            <a href="#sourcebuffer-init-segment-received">initialization segment received algorithm</a>.</p>
+          <ol>
+            <li>If <code><a href="#widl-SourceBuffer-trackDefaults">trackDefaults</a></code> contains a <a class="idlType" href="#idl-def-TrackDefault"><code>TrackDefault</code></a> object with a
+              <code><a href="#widl-TrackDefault-type">type</a></code> attribute equal to <var>type</var> and a
+              <code><a href="#widl-TrackDefault-byteStreamTrackID">byteStreamTrackID</a></code> attribute equal to
+              <var>byteStreamTrackID</var>, then return the value of the
+              <code><a href="#widl-TrackDefault-language">language</a></code> attribute on this matching object and abort these
+              steps.</li>
+
+            <li>If <code><a href="#widl-SourceBuffer-trackDefaults">trackDefaults</a></code> contains a <a class="idlType" href="#idl-def-TrackDefault"><code>TrackDefault</code></a> object with a
+              <code><a href="#widl-TrackDefault-type">type</a></code> attribute equal to <var>type</var> and a
+              <code><a href="#widl-TrackDefault-byteStreamTrackID">byteStreamTrackID</a></code> attribute equal to
+              an empty string, then return the value of the
+              <code><a href="#widl-TrackDefault-language">language</a></code> attribute on this matching object and abort these
+              steps.</li>
+
+            <li>Return an empty string to the caller.</li>
+          </ol>
+        </section>
+
+        <section id="sourcebuffer-default-track-kinds" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#sourcebuffer-default-track-kinds">
+          <h4 id="h4_sourcebuffer-default-track-kinds" role="heading" aria-level="3"><span class="secno">3.5.9 </span>Default track kinds</h4>
+          <p>The following steps are run when the <a href="#sourcebuffer-init-segment-received">initialization segment received algorithm</a> needs
+            to determine what the default kinds for a new track should be. This algorithm is initialized
+            with <var>byteStreamTrackID</var> and <var>type</var> parameters when invoked by the
+            <a href="#sourcebuffer-init-segment-received">initialization segment received algorithm</a>.</p>
+          <ol>
+            <li>If <code><a href="#widl-SourceBuffer-trackDefaults">trackDefaults</a></code> contains a <a class="idlType" href="#idl-def-TrackDefault"><code>TrackDefault</code></a> object with a
+              <code><a href="#widl-TrackDefault-type">type</a></code> attribute equal to <var>type</var> and a
+              <code><a href="#widl-TrackDefault-byteStreamTrackID">byteStreamTrackID</a></code> attribute equal to
+              <var>byteStreamTrackID</var>, then return the value of the
+              <code><a href="#widl-TrackDefault-kinds">kinds</a></code> attribute on this matching object and abort these
+              steps.</li>
+
+            <li>If <code><a href="#widl-SourceBuffer-trackDefaults">trackDefaults</a></code> contains a <a class="idlType" href="#idl-def-TrackDefault"><code>TrackDefault</code></a> object with a
+              <code><a href="#widl-TrackDefault-type">type</a></code> attribute equal to <var>type</var> and a
+              <code><a href="#widl-TrackDefault-byteStreamTrackID">byteStreamTrackID</a></code> attribute equal to
+              an empty string, then return the value of the
+              <code><a href="#widl-TrackDefault-kinds">kinds</a></code> attribute on this matching object and abort these
+              steps.</li>
+
+            <li>Return an array with a single empty string element in it to the caller.</li>
+          </ol>
+        </section>
+
+        <section id="sourcebuffer-coded-frame-processing" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#sourcebuffer-coded-frame-processing">
+          <h4 id="h4_sourcebuffer-coded-frame-processing" role="heading" aria-level="3"><span class="secno">3.5.10 </span>Coded Frame Processing</h4>
           <p>When complete <a href="#coded-frame">coded frames</a> have been parsed by the <a href="#sourcebuffer-segment-parser-loop">segment parser loop</a> then the following steps are run:</p>
           <ol>
             <li>
-	      <p>For each <a href="#coded-frame">coded frame</a> in the <a href="#media-segment">media segment</a> run the following steps:</p>
-	      <ol>
-	        <li><i>Loop Top: </i>Let <var>presentation timestamp</var> be a double precision floating point representation of the coded frame's <a href="#presentation-timestamp">presentation timestamp</a> in seconds.
-                  <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_20"><span>Note</span></div><p class="">Special processing may be needed to determine the presentation and decode timestamps for timed text frames since this information may not be explicilty
-                    present in the underlying format or may be dependent on the order of the frames. Some metadata text tracks, like MPEG2-TS PSI data, may only have implied timestamps.
-                    Format specific rules for these situations should be in the <a href="#byte-stream-format-specs">byte stream format specifications</a> or in separate extension specifications.</p></div>
-                </li>
-	        <li>Let <var>decode timestamp</var> be a double precision floating point representation of the coded frame's decode timestamp in seconds.
-                  <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_21"><span>Note</span></div><p class="">Implementations don't have to internally store timestamps in a double precision floating point representation. This
-                    representation is used here because it is the represention for timestamps in the HTML spec. The intention here is to make the
-                    behavior clear without adding unnecessary complexity to the algorithm to deal with the fact that adding a timestampOffset may
-                    cause a timestamp rollover in the underlying timestamp representation used by the byte stream format. Implementations can use any
-                    internal timestamp representation they wish, but the addition of timestampOffset should behave in a similar manner to what would happen
-                    if a double precision floating point representation was used.
-                  </p></div>
+          <p>For each <a href="#coded-frame">coded frame</a> in the <a href="#media-segment">media segment</a> run the following steps:</p>
+          <ol>
+            <li><i>Loop Top: </i><dl class="switch">
+                    <dt>If <var><a href="#sourcebuffer-generate-timestamps-flag">generate timestamps flag</a></var> equals true:</dt>
+                    <dd>
+                      <ol>
+                        <li>Let <var>presentation timestamp</var> equal 0.</li>
+                        <li>Let <var>decode timestamp</var> equal 0.</li>
+                      </ol>
+                    </dd>
+                    <dt>Otherwise:</dt>
+                    <dd>
+                      <ol>
+                        <li>Let <var>presentation timestamp</var> be a double precision floating point representation of the coded frame's <a href="#presentation-timestamp">presentation timestamp</a> in seconds.
+                          <div class="note"><div class="note-title" id="h_note_21" role="heading" aria-level="4"><span>Note</span></div><p>Special processing may be needed to determine the presentation and decode timestamps for timed text frames since this information may not be explicitly
+                            present in the underlying format or may be dependent on the order of the frames. Some metadata text tracks, like MPEG2-TS PSI data, may only have implied timestamps.
+                            Format specific rules for these situations should be in the <a href="#byte-stream-format-specs">byte stream format specifications</a> or in separate extension specifications.</p></div>
+                        </li>
+                    <li>Let <var>decode timestamp</var> be a double precision floating point representation of the coded frame's decode timestamp in seconds.
+                          <div class="note"><div class="note-title" id="h_note_22" role="heading" aria-level="4"><span>Note</span></div><p>Implementations don't have to internally store timestamps in a double precision floating point representation. This
+                            representation is used here because it is the represention for timestamps in the HTML spec. The intention here is to make the
+                            behavior clear without adding unnecessary complexity to the algorithm to deal with the fact that adding a timestampOffset may
+                            cause a timestamp rollover in the underlying timestamp representation used by the byte stream format. Implementations can use any
+                            internal timestamp representation they wish, but the addition of timestampOffset should behave in a similar manner to what would happen
+                            if a double precision floating point representation was used.
+                          </p></div>
+                        </li>
+                    </ol>
+                    </dd>
+                  </dl>
                 </li>
                 <li>Let <var>frame duration</var> be a double precision floating point representation of the <a href="#coded-frame-duration">coded frame's duration</a> in seconds.</li>
                 <li>If <code><a href="#widl-SourceBuffer-mode">mode</a></code> equals <code><a href="#idl-def-AppendMode.sequence">"sequence"</a></code> and <var><a href="#sourcebuffer-group-start-timestamp">group start timestamp</a></var> is set, then run the following steps:
                   <ol>
                     <li>Set <code><a href="#widl-SourceBuffer-timestampOffset">timestampOffset</a></code> equal to <var><a href="#sourcebuffer-group-start-timestamp">group start timestamp</a></var> - <var>presentation timestamp</var>.</li>
-                    <li>Set <var><a href="#sourcebuffer-highest-presentation-end-timestamp">highest presentation end timestamp</a></var> equal to <var><a href="#sourcebuffer-group-start-timestamp">group start timestamp</a></var>.</li>
+                    <li>Set <var><a href="#sourcebuffer-group-end-timestamp">group end timestamp</a></var> equal to <var><a href="#sourcebuffer-group-start-timestamp">group start timestamp</a></var>.</li>
                     <li>Set the <var><a href="#need-RAP-flag">need random access point flag</a></var> on all <a href="#track-buffer">track buffers</a> to true.</li>
                     <li>Unset <var><a href="#sourcebuffer-group-start-timestamp">group start timestamp</a></var>.</li>
                   </ol>
                 </li>
-	        <li>
-	          <p>If <code><a href="#widl-SourceBuffer-timestampOffset">timestampOffset</a></code> is not 0, then run the following steps:</p>
-	          <ol>
-	            <li>Add <code><a href="#widl-SourceBuffer-timestampOffset">timestampOffset</a></code> to the <var>presentation timestamp</var>.</li>
-	            <li>Add <code><a href="#widl-SourceBuffer-timestampOffset">timestampOffset</a></code> to the <var>decode timestamp</var>.</li>
-	            <li>If the <var>presentation timestamp</var> or <var>decode timestamp</var> is less than the <a href="#presentation-start-time">presentation start time</a>, 
-                      then run the <a href="#end-of-stream-algorithm">end of stream algorithm</a> with the <var>error</var> parameter set to <code><a href="#idl-def-EndOfStreamError.decode">"decode"</a></code>, and abort these steps.</li>
-	          </ol>
-	        </li>
+            <li>
+              <p>If <code><a href="#widl-SourceBuffer-timestampOffset">timestampOffset</a></code> is not 0, then run the following steps:</p>
+              <ol>
+                <li>Add <code><a href="#widl-SourceBuffer-timestampOffset">timestampOffset</a></code> to the <var>presentation timestamp</var>.</li>
+                <li>Add <code><a href="#widl-SourceBuffer-timestampOffset">timestampOffset</a></code> to the <var>decode timestamp</var>.</li>
+              </ol>
+            </li>
                 <li>Let <var>track buffer</var> equal the <a href="#track-buffer">track buffer</a> that the coded frame will be added to.</li>
                 <li>
                   <dl class="switch">
@@ -1814,9 +2026,9 @@
                         <li>
                           <dl class="switch">
                             <dt>If <code><a href="#widl-SourceBuffer-mode">mode</a></code> equals <code><a href="#idl-def-AppendMode.segments">"segments"</a></code>:</dt>
-                            <dd>Set <var><a href="#sourcebuffer-highest-presentation-end-timestamp">highest presentation end timestamp</a></var> to <var>presentation timestamp</var>.</dd>
+                            <dd>Set <var><a href="#sourcebuffer-group-end-timestamp">group end timestamp</a></var> to <var>presentation timestamp</var>.</dd>
                             <dt>If <code><a href="#widl-SourceBuffer-mode">mode</a></code> equals <code><a href="#idl-def-AppendMode.sequence">"sequence"</a></code>:</dt>
-                            <dd>Set <var><a href="#sourcebuffer-group-start-timestamp">group start timestamp</a></var> equal to the <var><a href="#sourcebuffer-highest-presentation-end-timestamp">highest presentation end timestamp</a></var>.</dd>
+                            <dd>Set <var><a href="#sourcebuffer-group-start-timestamp">group start timestamp</a></var> equal to the <var><a href="#sourcebuffer-group-end-timestamp">group end timestamp</a></var>.</dd>
                           </dl>
                         </li>
                         <li>Unset the <var><a href="#last-decode-timestamp">last decode timestamp</a></var> on all <a href="#track-buffer">track buffers</a>.</li>
@@ -1833,7 +2045,7 @@
                 <li>Let <var>frame end timestamp</var> equal the sum of <var>presentation timestamp</var> and <var>frame duration</var>.</li>
                 <li>If <var>presentation timestamp</var> is less than <code><a href="#widl-SourceBuffer-appendWindowStart">appendWindowStart</a></code>, then set the <var><a href="#need-RAP-flag">need random access point flag</a></var> to true, drop the
                   coded frame, and jump to the top of the loop to start processing the next coded frame.
-                  <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_22"><span>Note</span></div><p class="">Some implementations may choose to collect some of these coded frames that are outside the <a href="#append-window">append window</a> and use them
+                  <div class="note"><div class="note-title" id="h_note_23" role="heading" aria-level="4"><span>Note</span></div><p>Some implementations may choose to collect some of these coded frames that are outside the <a href="#append-window">append window</a> and use them
                     to generate a splice at the first coded frame that has a <a href="#presentation-timestamp">presentation timestamp</a> greater than or equal to <code><a href="#widl-SourceBuffer-appendWindowStart">appendWindowStart</a></code> even if
                     that frame is not a <a href="#random-access-point">random access point</a>. Supporting this requires multiple decoders or faster than real-time decoding so for now
                     this behavior will not be a normative requirement.
@@ -1841,7 +2053,9 @@
                 </li>
                 <li>If <var>frame end timestamp</var> is greater than <code><a href="#widl-SourceBuffer-appendWindowEnd">appendWindowEnd</a></code>, then set the <var><a href="#need-RAP-flag">need random access point flag</a></var> to true, drop the
                   coded frame, and jump to the top of the loop to start processing the next coded frame.
-                </li><li>If the <var><a href="#need-RAP-flag">need random access point flag</a></var> on <var>track buffer</var> equals true, then run the following steps:
+            <li>If the <var>decode timestamp</var> is less than the <a href="#presentation-start-time">presentation start time</a>,
+                  then run the <a href="#end-of-stream-algorithm">end of stream algorithm</a> with the <var>error</var> parameter set to <code><a href="#idl-def-EndOfStreamError.decode">"decode"</a></code>, and abort these steps.</li>
+                <li>If the <var><a href="#need-RAP-flag">need random access point flag</a></var> on <var>track buffer</var> equals true, then run the following steps:
                   <ol>
                     <li>If the coded frame is not a <a href="#random-access-point">random access point</a>, then drop the coded frame and jump to the top of the loop to start
                       processing the next coded frame.</li>
@@ -1864,7 +2078,7 @@
                             <li>Let <var>remove window timestamp</var> equal <var>overlapped frame presentation timestamp</var> plus 1 microsecond.</li>
                             <li>If the <var>presentation timestamp</var> is less than the <var>remove window timestamp</var>, then remove <var>overlapped frame</var> and any
                               <a href="#coded-frame">coded frames</a> that depend on it from <var>track buffer</var>.
-                              <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_23"><span>Note</span></div><p class="">
+                              <div class="note"><div class="note-title" id="h_note_24" role="heading" aria-level="4"><span>Note</span></div><p>
                                 This is to compensate for minor errors in frame timestamp computations that can appear when converting back and forth between double precision
                                 floating point numbers and rationals. This tolerance allows a frame to replace an existing one as long as it is within 1 microsecond of the existing
                                 frame's start time. Frames that come slightly before an existing frame are handled by the removal step below.
@@ -1883,9 +2097,9 @@
                     <dt>If <var><a href="#highest-presentation-timestamp">highest presentation timestamp</a></var> for <var>track buffer</var> is not set:</dt>
                     <dd>Remove all <a href="#coded-frame">coded frames</a> from <var>track buffer</var> that have a <a href="#presentation-timestamp">presentation timestamp</a> greater than or equal to
                       <var>presentation timestamp</var> and less than <var>frame end timestamp</var>.</dd>
-                    <dt>If <var><a href="#highest-presentation-timestamp">highest presentation timestamp</a></var> for <var>track buffer</var> is set and less than <var>presentation timestamp</var></dt>
+                    <dt>If <var><a href="#highest-presentation-timestamp">highest presentation timestamp</a></var> for <var>track buffer</var> is set and less than or equal to <var>presentation timestamp</var>:</dt>
                     <dd>Remove all <a href="#coded-frame">coded frames</a> from <var>track buffer</var> that have a <a href="#presentation-timestamp">presentation timestamp</a> greater than
-                      <var><a href="#highest-presentation-timestamp">highest presentation timestamp</a></var> and less than or equal to <var>frame end timestamp</var>.</dd>
+                      or equal to <var><a href="#highest-presentation-timestamp">highest presentation timestamp</a></var> and less than <var>frame end timestamp</var></dd>
                   </dl>
                 </li>
                 <li>Remove decoding dependencies of the coded frames removed in the previous step:
@@ -1893,14 +2107,14 @@
                     <dt>If detailed information about decoding dependencies is available:</dt>
                     <dd>Remove all <a href="#coded-frame">coded frames</a> from <var>track buffer</var> that have decoding dependencies on the coded frames removed in
                       the previous step.
-                      <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_24"><span>Note</span></div><p class="">For example if an I-frame is removed in the previous step, then all P-frames &amp; B-frames that depend on that I-frame
+                      <div class="note"><div class="note-title" id="h_note_25" role="heading" aria-level="4"><span>Note</span></div><p>For example if an I-frame is removed in the previous step, then all P-frames &amp; B-frames that depend on that I-frame
                         should be removed from <var>track buffer</var>. This makes sure that decode dependencies are properly maintained during overlaps.
                       </p></div>
                     </dd>
                     <dt>Otherwise:</dt>
                     <dd>Remove all <a href="#coded-frame">coded frames</a> between the coded frames removed in the previous step and the next
                       <a href="#random-access-point">random access point</a> after those removed frames.
-                      <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_25"><span>Note</span></div><p class="">Removing all <a href="#coded-frame">coded frames</a> until the next <a href="#random-access-point">random access point</a> is a conservative
+                      <div class="note"><div class="note-title" id="h_note_26" role="heading" aria-level="4"><span>Note</span></div><p>Removing all <a href="#coded-frame">coded frames</a> until the next <a href="#random-access-point">random access point</a> is a conservative
                         estimate of the decoding dependencies since it assumes all frames between the removed frames and the next random access point
                         depended on the frames that were removed.
                       </p></div>
@@ -1916,86 +2130,87 @@
                     <dd>Add the <a href="#coded-frame">coded frame</a> with the <var>presentation timestamp</var>, <var>decode timestamp</var>, and <var>frame duration</var> to the
                       <var>track buffer</var>.</dd>
                   </dl>
-                </li><li>Set <var><a href="#last-decode-timestamp">last decode timestamp</a></var> for <var>track buffer</var> to <var>decode timestamp</var>.</li>
+                <li>Set <var><a href="#last-decode-timestamp">last decode timestamp</a></var> for <var>track buffer</var> to <var>decode timestamp</var>.</li>
                 <li>Set <var><a href="#last-frame-duration">last frame duration</a></var> for <var>track buffer</var> to <var>frame duration</var>.</li>
                 <li>If <var><a href="#highest-presentation-timestamp">highest presentation timestamp</a></var> for <var>track buffer</var> is unset or <var>frame end timestamp</var> is greater
                   than <var><a href="#highest-presentation-timestamp">highest presentation timestamp</a></var>, then set <var><a href="#highest-presentation-timestamp">highest presentation timestamp</a></var> for <var>track buffer</var>
                   to <var>frame end timestamp</var>.
-                  <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_26"><span>Note</span></div><p class="">The greater than check is needed because bidirectional prediction between coded frames can cause
+                  <div class="note"><div class="note-title" id="h_note_27" role="heading" aria-level="4"><span>Note</span></div><p>The greater than check is needed because bidirectional prediction between coded frames can cause
                     <var>presentation timestamp</var> to not be monotonically increasing eventhough the decode timestamps are monotonically increasing.</p></div>
                 </li>
-                <li>If <var><a href="#sourcebuffer-highest-presentation-end-timestamp">highest presentation end timestamp</a></var> is unset or <var>frame end timestamp</var> is greater than
-                  <var><a href="#sourcebuffer-highest-presentation-end-timestamp">highest presentation end timestamp</a></var>, then set <var><a href="#sourcebuffer-highest-presentation-end-timestamp">highest presentation end timestamp</a></var> equal to
-                  <var>frame end timestamp</var>.</li>
-	      </ol>
+                <li>If <var>frame end timestamp</var> is greater than <var><a href="#sourcebuffer-group-end-timestamp">group end timestamp</a></var>,
+                  then set <var><a href="#sourcebuffer-group-end-timestamp">group end timestamp</a></var> equal to <var>frame end timestamp</var>.</li>
+                <li>If <var><a href="#sourcebuffer-generate-timestamps-flag">generate timestamps flag</a></var> equals true, then set
+                  <code><a href="#widl-SourceBuffer-timestampOffset">timestampOffset</a></code> equal to <var>frame end timestamp</var>.</li>
+          </ol>
             </li>
             <li>
               <p>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute is <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_metadata">HAVE_METADATA</a></code> and the new <a href="#coded-frame">coded frames</a> cause all objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> to have media data for the current playback position, then run the following steps:</p>
-	      <ol>
-	        <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>.</li>
-	        <li>If this is the first transition to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>, then <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-loadeddata">loadeddata</a></code> at the media element.</li>
-	      </ol>
+          <ol>
+            <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>.</li>
+            <li>If this is the first transition to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>, then <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-loadeddata">loadeddata</a></code> at the media element.</li>
+          </ol>
             </li>
             <li>
-	      <p>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute is <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code> and the new <a href="#coded-frame">coded frames</a> cause all objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> to have media data beyond the current playback position, then run the following steps:</p>
-	      <ol>
-	        <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_future_data">HAVE_FUTURE_DATA</a></code>.</li>
-	        <li>
+          <p>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute is <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code> and the new <a href="#coded-frame">coded frames</a> cause all objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> to have media data beyond the current playback position, then run the following steps:</p>
+          <ol>
+            <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_future_data">HAVE_FUTURE_DATA</a></code>.</li>
+            <li>
                   <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-canplay">canplay</a></code> at the media element.</li>
-	      </ol>
+          </ol>
             </li>
             <li>
-	      <p>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute is <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_future_data">HAVE_FUTURE_DATA</a></code> and the new <a href="#coded-frame">coded frames</a> cause all objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> to have <a href="#enough-data">enough data to ensure uninterrupted playback</a>, then run the following steps:</p>
-	      <ol>
-	        <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_enough_data">HAVE_ENOUGH_DATA</a></code>.</li>
-	        <li>
+          <p>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute is <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_future_data">HAVE_FUTURE_DATA</a></code> and the new <a href="#coded-frame">coded frames</a> cause all objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> to have <a href="#enough-data">enough data to ensure uninterrupted playback</a>, then run the following steps:</p>
+          <ol>
+            <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_enough_data">HAVE_ENOUGH_DATA</a></code>.</li>
+            <li>
                   <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-canplaythrough">canplaythrough</a></code> at the media element.</li>
-	      </ol>
+          </ol>
             </li>
-            <li>If the <a href="#media-segment">media segment</a> contains data beyond the current <code><a href="#widl-MediaSource-duration">duration</a></code>, then run the <a href="#duration-change-algorithm">duration change algorithm</a> with <var>new duration</var> set to the maximum of the current duration and the highest end timestamp reported by <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-buffered">HTMLMediaElement.buffered</a></code>.</li>
+            <li>If the <a href="#media-segment">media segment</a> contains data beyond the current <code><a href="#widl-MediaSource-duration">duration</a></code>, then run the <a href="#duration-change-algorithm">duration change algorithm</a> with <var>new duration</var> set to the maximum of the current duration and the <var><a href="#sourcebuffer-group-end-timestamp">group end timestamp</a></var>.</li>
           </ol>
         </section>
 
-        <section id="sourcebuffer-coded-frame-removal" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-          <h4 aria-level="3" role="heading" id="h4_sourcebuffer-coded-frame-removal"><span class="secno">3.5.9 </span>Coded Frame Removal Algorithm</h4>
+        <section id="sourcebuffer-coded-frame-removal" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#sourcebuffer-coded-frame-removal">
+          <h4 id="h4_sourcebuffer-coded-frame-removal" role="heading" aria-level="3"><span class="secno">3.5.11 </span>Coded Frame Removal Algorithm</h4>
           <p>Follow these steps when <a href="#coded-frame">coded frames</a> for a specific time range need to be removed from the SourceBuffer:</p>
           <ol>
             <li>Let <var>start</var> be the starting <a href="#presentation-timestamp">presentation timestamp</a> for the removal range.</li>
             <li>Let <var>end</var> be the end <a href="#presentation-timestamp">presentation timestamp</a> for the removal range. </li>
             <li><p>For each <a href="#track-buffer">track buffer</a> in this source buffer, run the following steps:</p>
               <ol>
-	        <li>Let <var>remove end timestamp</var> be the current value of <code><a href="#widl-MediaSource-duration">duration</a></code></li>
+            <li>Let <var>remove end timestamp</var> be the current value of <code><a href="#widl-MediaSource-duration">duration</a></code></li>
                 <li>
                   <p>If this <a href="#track-buffer">track buffer</a> has a <a href="#random-access-point">random access point</a> timestamp that is greater than or equal to
                     <var>end</var>, then update <var>remove end timestamp</var> to that random access point timestamp.</p>
-	          <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_27"><span>Note</span></div><p class="">Random access point timestamps can be different across tracks because the dependencies between <a href="#coded-frame">coded frames</a> within a
+              <div class="note"><div class="note-title" id="h_note_28" role="heading" aria-level="4"><span>Note</span></div><p>Random access point timestamps can be different across tracks because the dependencies between <a href="#coded-frame">coded frames</a> within a
                     track are usually different than the dependencies in another track.</p></div>
                 </li>
-	        <li>Remove all media data, from this <a href="#track-buffer">track buffer</a>, that contain starting timestamps greater than or equal to
+            <li>Remove all media data, from this <a href="#track-buffer">track buffer</a>, that contain starting timestamps greater than or equal to
                   <var>start</var> and less than the <var>remove end timestamp</var>.</li>
                 <li>
                   <p>If this object is in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>, the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#current-playback-position">current playback position</a> is greater than or equal to
                     <var>start</var> and less than the <var>remove end timestamp</var>, and <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> is greater than
                     <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_metadata">HAVE_METADATA</a></code>, then set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_metadata">HAVE_METADATA</a></code> and stall playback.</p>
-                  <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_28"><span>Note</span></div><p class="">This transition occurs because media data for the current position has been removed. Playback cannot progress until media for the
+                  <div class="note"><div class="note-title" id="h_note_29" role="heading" aria-level="4"><span>Note</span></div><p>This transition occurs because media data for the current position has been removed. Playback cannot progress until media for the
                     <a href="http://www.w3.org/TR/html5/embedded-content-0.html#current-playback-position">current playback position</a> is appended or the <a href="#active-source-buffer-changes">selected/enabled tracks change</a>.</p></div>
                 </li>
-	      </ol>
+          </ol>
             </li>
             <li>If <var><a href="#sourcebuffer-buffer-full-flag">buffer full flag</a></var> equals true and this object is ready to accept more bytes, then set
               the <var><a href="#sourcebuffer-buffer-full-flag">buffer full flag</a></var> to false.</li>
           </ol>
         </section>
 
-        <section id="sourcebuffer-coded-frame-eviction" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-          <h4 aria-level="3" role="heading" id="h4_sourcebuffer-coded-frame-eviction"><span class="secno">3.5.10 </span>Coded Frame Eviction Algorithm</h4>
+        <section id="sourcebuffer-coded-frame-eviction" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#sourcebuffer-coded-frame-eviction">
+          <h4 id="h4_sourcebuffer-coded-frame-eviction" role="heading" aria-level="3"><span class="secno">3.5.12 </span>Coded Frame Eviction Algorithm</h4>
           <p>This algorithm is run to free up space in this source buffer when new data is appended.</p>
           <ol>
             <li>Let <var>new data</var> equal the data that is about to be appended to this SourceBuffer.</li>
             <li>If the <var><a href="#sourcebuffer-buffer-full-flag">buffer full flag</a></var> equals false, then abort these steps.</li>
             <li>Let <var>removal ranges</var> equal a list of presentation time ranges that can be evicted from the presentation to make room for the
               <var>new data</var>.
-              <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_29"><span>Note</span></div><p class="">Implementations may use different methods for selecting <var>removal ranges</var> so web applications should not depend on a
+              <div class="note"><div class="note-title" id="h_note_30" role="heading" aria-level="4"><span>Note</span></div><p>Implementations may use different methods for selecting <var>removal ranges</var> so web applications should not depend on a
                 specific behavior. The web application can use the <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> attribute to observe whether portions of the buffered data have been evicted.
               </p></div>
             </li>
@@ -2004,8 +2219,8 @@
           </ol>
         </section>
 
-        <section id="sourcebuffer-audio-splice-frame-algorithm" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-          <h4 aria-level="3" role="heading" id="h4_sourcebuffer-audio-splice-frame-algorithm"><span class="secno">3.5.11 </span>Audio Splice Frame Algorithm</h4>
+        <section id="sourcebuffer-audio-splice-frame-algorithm" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#sourcebuffer-audio-splice-frame-algorithm">
+          <h4 id="h4_sourcebuffer-audio-splice-frame-algorithm" role="heading" aria-level="3"><span class="secno">3.5.13 </span>Audio Splice Frame Algorithm</h4>
           <p>Follow these steps when the <a href="#sourcebuffer-coded-frame-processing">coded frame processing algorithm</a> needs to generate a splice frame for two overlapping audio
             <a href="#coded-frame">coded frames</a>:</p>
           <ol>
@@ -2019,7 +2234,7 @@
             <li>Update <var>presentation timestamp</var> and <var>decode timestamp</var> to the nearest audio sample timestamp based on sample rate of the 
               audio in <var>overlapped frame</var>. If a timestamp is equidistant from both audio sample timestamps, then use the higher timestamp. (eg.
               floor(x * sample_rate + 0.5) / sample_rate).
-              <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_30"><span>Note</span></div><div class="">
+              <div class="note"><div class="note-title" id="h_note_31" role="heading" aria-level="4"><span>Note</span></div><div>
                 <p>For example, given the following values:</p>
                 <ul>
                   <li>The <a href="#presentation-timestamp">presentation timestamp</a> of <var>overlapped frame</var> equals 10.</li>
@@ -2040,13 +2255,13 @@
                     <li>The <a href="#decode-timestamp">decode timestamp</a> set to the <var>overlapped frame</var> <a href="#decode-timestamp">decode timestamp</a>.</li>
                     <li>The <a href="#coded-frame-duration">coded frame duration</a> set to difference between <var>presentation timestamp</var> and the <var>overlapped frame</var> <a href="#presentation-timestamp">presentation timestamp</a>.</li>
                   </ul>
-                  <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_31"><span>Note</span></div><p class="">
+                  <div class="note"><div class="note-title" id="h_note_32" role="heading" aria-level="4"><span>Note</span></div><p>
                     Some implementations may apply fades to/from silence to coded frames on either side of the inserted silence to make the transition less
                     jarring.
                   </p></div>
                 </li>
                 <li>Return to caller without providing a splice frame.
-                  <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_32"><span>Note</span></div><p class="">
+                  <div class="note"><div class="note-title" id="h_note_33" role="heading" aria-level="4"><span>Note</span></div><p>
                     This is intended to allow <var>new coded frame</var> to be added to the <var>track buffer</var> as if
                     <var>overlapped frame</var> had not been in the <var>track buffer</var> to begin with.
                   </p></div>
@@ -2058,24 +2273,24 @@
             <li>Let <var>fade out coded frames</var> equal <var>overlapped frame</var> as well as any additional frames in <var>track buffer</var> that
               have a <a href="#presentation-timestamp">presentation timestamp</a> greater than <var>presentation timestamp</var> and less than <var>splice end timestamp</var>.</li>
             <li>Remove all the frames included in <var>fade out coded frames</var> from <var>track buffer</var>.
-            </li><li>Return a splice frame with the following properties:
+            <li>Return a splice frame with the following properties:
               <ul>
                 <li>The <a href="#presentation-timestamp">presentation timestamp</a> set to the <var>overlapped frame</var> <a href="#presentation-timestamp">presentation timestamp</a>.</li>
                 <li>The <a href="#decode-timestamp">decode timestamp</a> set to the <var>overlapped frame</var> <a href="#decode-timestamp">decode timestamp</a>.</li>
                 <li>The <a href="#coded-frame-duration">coded frame duration</a> set to difference between <var>frame end timestamp</var> and the <var>overlapped frame</var> <a href="#presentation-timestamp">presentation timestamp</a>.</li>
                 <li>The fade out coded frames equals <var>fade-out coded frames</var>.</li>
                 <li>The fade in coded frame equal <var>new coded frame</var>.
-                  <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_33"><span>Note</span></div><p class="">If the <var>new coded frame</var> is less than 5 milliseconds in duration, then coded frames that are appended after the
+                  <div class="note"><div class="note-title" id="h_note_34" role="heading" aria-level="4"><span>Note</span></div><p>If the <var>new coded frame</var> is less than 5 milliseconds in duration, then coded frames that are appended after the
                     <var>new coded frame</var> will be needed to properly render the splice.</p></div>
                 </li>
                 <li>The splice timestamp equals <var>presentation timestamp</var>.</li>
               </ul>
-              <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_34"><span>Note</span></div><p class="">See the <a href="#sourcebuffer-audio-splice-rendering-algorithm">audio splice rendering algorithm</a> for details on how this splice frame is rendered.</p></div>
+              <div class="note"><div class="note-title" id="h_note_35" role="heading" aria-level="4"><span>Note</span></div><p>See the <a href="#sourcebuffer-audio-splice-rendering-algorithm">audio splice rendering algorithm</a> for details on how this splice frame is rendered.</p></div>
             </li>
           </ol>
         </section>
-        <section id="sourcebuffer-audio-splice-rendering-algorithm" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-          <h4 aria-level="3" role="heading" id="h4_sourcebuffer-audio-splice-rendering-algorithm"><span class="secno">3.5.12 </span>Audio Splice Rendering Algorithm</h4>
+        <section id="sourcebuffer-audio-splice-rendering-algorithm" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#sourcebuffer-audio-splice-rendering-algorithm">
+          <h4 id="h4_sourcebuffer-audio-splice-rendering-algorithm" role="heading" aria-level="3"><span class="secno">3.5.14 </span>Audio Splice Rendering Algorithm</h4>
           <p>The following steps are run when a spliced frame, generated by the <a href="#sourcebuffer-audio-splice-frame-algorithm">audio splice frame algorithm</a>, needs to be rendered by the
             media element:</p>
           <ol>
@@ -2102,13 +2317,13 @@
             <li>Copy samples between <var>splice end timestamp</var> to <var>end timestamp</var> from <var>fade in samples</var> into <var>output samples</var>.</li>
             <li>Render <var>output samples</var>.</li>
           </ol>
-          <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_35"><span>Note</span></div><div class="">
+          <div class="note"><div class="note-title" id="h_note_36" role="heading" aria-level="4"><span>Note</span></div><div>
             <p>Here is a graphical representation of this algorithm.</p>
-            <img src="audio_splice.png" alt="Audio splice diagram">
+            <img alt="Audio splice diagram" src="audio_splice.png">
           </div></div>
         </section>
-        <section id="sourcebuffer-text-splice-frame-algorithm" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-          <h4 aria-level="3" role="heading" id="h4_sourcebuffer-text-splice-frame-algorithm"><span class="secno">3.5.13 </span>Text Splice Frame Algorithm</h4>
+        <section id="sourcebuffer-text-splice-frame-algorithm" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#sourcebuffer-text-splice-frame-algorithm">
+          <h4 id="h4_sourcebuffer-text-splice-frame-algorithm" role="heading" aria-level="3"><span class="secno">3.5.15 </span>Text Splice Frame Algorithm</h4>
           <p>Follow these steps when the <a href="#sourcebuffer-coded-frame-processing">coded frame processing algorithm</a> needs to generate a splice frame for two overlapping timed text
             <a href="#coded-frame">coded frames</a>:</p>
           <ol>
@@ -2124,10 +2339,10 @@
             <li>Let <var>overlapped frames</var> equal <var>first overlapped frame</var> as well as any additional frames in <var>track buffer</var> that
               have a <a href="#presentation-timestamp">presentation timestamp</a> greater than <var>presentation timestamp</var> and less than <var>frame end timestamp</var>.</li>
             <li>Remove all the frames included in <var>overlapped frames</var> from <var>track buffer</var>.
-            </li><li>Update the <a href="#coded-frame-duration">coded frame duration</a> of the <var>first overlapped frame</var> to <var>presentation timestamp</var> - <var>overlapped presentation timestamp</var>.</li>
+            <li>Update the <a href="#coded-frame-duration">coded frame duration</a> of the <var>first overlapped frame</var> to <var>presentation timestamp</var> - <var>overlapped presentation timestamp</var>.</li>
             <li>Add <var>first overlapped frame</var> to the <var>track buffer</var>.
-            </li><li>Return to caller without providing a splice frame.
-              <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_36"><span>Note</span></div><p class="">This is intended to allow <var>new coded frame</var> to be added to the <var>track buffer</var> as if
+            <li>Return to caller without providing a splice frame.
+              <div class="note"><div class="note-title" id="h_note_37" role="heading" aria-level="4"><span>Note</span></div><p>This is intended to allow <var>new coded frame</var> to be added to the <var>track buffer</var> as if
                 it hadn't overlapped any frames in <var>track buffer</var> to begin with.</p></div>
             </li>
           </ol>
@@ -2135,26 +2350,26 @@
       </section>
     </section>
 
-    <section id="sourcebufferlist" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-      <!--OddPage--><h2 aria-level="1" role="heading" id="h2_sourcebufferlist"><span class="secno">4. </span>SourceBufferList Object</h2>
-      <p>SourceBufferList is a simple container object for <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> objects. It provides read-only array access and fires events when the list is modified.</p>
+    <section id="sourcebufferlist" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#sourcebufferlist">
+      <!--OddPage--><h2 id="h2_sourcebufferlist" role="heading" aria-level="1"><span class="secno">4. </span>SourceBufferList Object</h2>
+      <p>SourceBufferList is a simple container object for <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> objects. It provides read-only array access and fires events when the list is modified.</p>
 
       <pre class="idl"><span class="idlInterface" id="idl-def-SourceBufferList">interface <span class="idlInterfaceID">SourceBufferList</span> : <span class="idlSuperclass">EventTarget</span> {
 <span class="idlAttribute">    readonly    attribute <span class="idlAttrType">unsigned long</span> <span class="idlAttrName"><a href="#widl-SourceBufferList-length">length</a></span>;</span>
 <span class="idlMethod">    <span class="idlMethType">getter</span> <span class="idlMethName"><a href="#widl-SourceBufferList-SourceBuffer-getter-unsigned-long-index">SourceBuffer</a></span> (<span class="idlParam"><span class="idlParamType">unsigned long</span> <span class="idlParamName">index</span></span>);</span>
-};</span></pre><section id="attributes-2"><h3 aria-level="2" role="heading" id="h3_attributes-2"><span class="secno">4.1 </span>Attributes</h3><dl class="attributes"><dt id="widl-SourceBufferList-length"><code>length</code> of type <span class="idlAttrType">unsigned long</span>, readonly   </dt><dd>
-          <p>Indicates the number of <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> objects in the list.</p>
-        </dd></dl></section><section id="methods-2"><h3 aria-level="2" role="heading" id="h3_methods-2"><span class="secno">4.2 </span>Methods</h3><dl class="methods"><dt id="widl-SourceBufferList-SourceBuffer-getter-unsigned-long-index"><code>SourceBuffer</code></dt><dd>
+};</span></pre><section id="attributes-2"><h3 id="h3_attributes-2" role="heading" aria-level="2"><span class="secno">4.1 </span>Attributes</h3><dl class="attributes"><dt id="widl-SourceBufferList-length"><code>length</code> of type <span class="idlAttrType">unsigned long</span>, readonly   </dt><dd>
+          <p>Indicates the number of <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> objects in the list.</p>
+        </dd></dl></section><section id="methods-2"><h3 id="h3_methods-2" role="heading" aria-level="2"><span class="secno">4.2 </span>Methods</h3><dl class="methods"><dt id="widl-SourceBufferList-SourceBuffer-getter-unsigned-long-index"><code>SourceBuffer</code></dt><dd>
           <p>Allows the SourceBuffer objects in the list to be accessed with an array operator (i.e. []).</p>
 
           
         <table class="parameters"><tbody><tr><th>Parameter</th><th>Type</th><th>Nullable</th><th>Optional</th><th>Description</th></tr><tr><td class="prmName">index</td><td class="prmType"><code>unsigned long</code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptFalse"><span role="img" aria-label="False">✘</span></td><td class="prmDesc"></td></tr></tbody></table><div><em>Return type: </em><code>getter</code></div><p>When this method is invoked, the user agent must run the following steps:</p><ol class="method-algorithm">
             <li>If <var>index</var> is greater than or equal to the <code><a href="#widl-SourceBufferList-length">length</a></code> attribute then return undefined and abort these steps.</li>
-            <li>Return the <var>index</var>'th <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object in the list.</li>
+            <li>Return the <var>index</var>'th <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object in the list.</li>
           </ol></dd></dl></section>
 
-      <section id="sourcebufferlist-events" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-        <h3 aria-level="2" role="heading" id="h3_sourcebufferlist-events"><span class="secno">4.3 </span>Event Summary</h3>
+      <section id="sourcebufferlist-events" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#sourcebufferlist-events">
+        <h3 id="h3_sourcebufferlist-events" role="heading" aria-level="2"><span class="secno">4.3 </span>Event Summary</h3>
         <table class="old-table">
           <thead>
             <tr>
@@ -2167,27 +2382,27 @@
             <tr>
               <td><dfn id="dom-evt-addsourcebuffer"><code>addsourcebuffer</code></dfn></td>
               <td><code>Event</code></td>
-              <td>When a <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> is added to the list.</td>
+              <td>When a <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> is added to the list.</td>
             </tr>
             <tr>
               <td><dfn id="dom-evt-removesourcebuffer"><code>removesourcebuffer</code></dfn></td>
               <td><code>Event</code></td>
-              <td>When a <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> is removed from the list.</td>
+              <td>When a <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> is removed from the list.</td>
             </tr>
           </tbody>
         </table>
       </section>
     </section>
 
-    <section id="videoplaybackquality" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-      <!--OddPage--><h2 aria-level="1" role="heading" id="h2_videoplaybackquality"><span class="secno">5. </span>VideoPlaybackQuality Object</h2>
+    <section id="videoplaybackquality" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#videoplaybackquality">
+      <!--OddPage--><h2 id="h2_videoplaybackquality" role="heading" aria-level="1"><span class="secno">5. </span>VideoPlaybackQuality Object</h2>
       <pre class="idl"><span class="idlInterface" id="idl-def-VideoPlaybackQuality">interface <span class="idlInterfaceID">VideoPlaybackQuality</span> {
 <span class="idlAttribute">    readonly    attribute <span class="idlAttrType">DOMHighResTimeStamp</span> <span class="idlAttrName"><a href="#widl-VideoPlaybackQuality-creationTime">creationTime</a></span>;</span>
 <span class="idlAttribute">    readonly    attribute <span class="idlAttrType">unsigned long</span>       <span class="idlAttrName"><a href="#widl-VideoPlaybackQuality-totalVideoFrames">totalVideoFrames</a></span>;</span>
 <span class="idlAttribute">    readonly    attribute <span class="idlAttrType">unsigned long</span>       <span class="idlAttrName"><a href="#widl-VideoPlaybackQuality-droppedVideoFrames">droppedVideoFrames</a></span>;</span>
 <span class="idlAttribute">    readonly    attribute <span class="idlAttrType">unsigned long</span>       <span class="idlAttrName"><a href="#widl-VideoPlaybackQuality-corruptedVideoFrames">corruptedVideoFrames</a></span>;</span>
 <span class="idlAttribute">    readonly    attribute <span class="idlAttrType">double</span>              <span class="idlAttrName"><a href="#widl-VideoPlaybackQuality-totalFrameDelay">totalFrameDelay</a></span>;</span>
-};</span></pre><section id="attributes-3"><h3 aria-level="2" role="heading" id="h3_attributes-3"><span class="secno">5.1 </span>Attributes</h3><dl class="attributes"><dt id="widl-VideoPlaybackQuality-corruptedVideoFrames"><code>corruptedVideoFrames</code> of type <span class="idlAttrType">unsigned long</span>, readonly   </dt><dd>
+};</span></pre><section id="attributes-3"><h3 id="h3_attributes-3" role="heading" aria-level="2"><span class="secno">5.1 </span>Attributes</h3><dl class="attributes"><dt id="widl-VideoPlaybackQuality-corruptedVideoFrames"><code>corruptedVideoFrames</code> of type <span class="idlAttrType">unsigned long</span>, readonly   </dt><dd>
           <p>The total number of corrupted frames that have been detected.</p>
         </dd><dt id="widl-VideoPlaybackQuality-creationTime"><code>creationTime</code> of type <span class="idlAttrType">DOMHighResTimeStamp</span>, readonly   </dt><dd>
           <p>The timestamp returned by <a href="http://www.w3.org/TR/hr-time/#dom-performance-now">Performance.now()</a> when this object was created.</p>
@@ -2202,28 +2417,133 @@
         </dd></dl></section>
     </section>
 
-    <section id="url" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-      <!--OddPage--><h2 aria-level="1" role="heading" id="h2_url"><span class="secno">6. </span>URL Object Extensions</h2>
+    <section id="trackdefault" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#trackdefault">
+      <!--OddPage--><h2 id="h2_trackdefault" role="heading" aria-level="1"><span class="secno">6. </span>TrackDefault Object</h2>
+      <p>The TrackDefault object is used to provide kind and language information for tracks that do not
+        contain this information in the <a href="#init-segment">initialization segments</a>. This information is only consulted
+        when the <a href="#sourcebuffer-init-segment-received">initialization segment received algorithm</a> creates track objects.</p>
+
+      <pre class="idl"><span class="idlEnum" id="idl-def-TrackDefaultType">enum <span class="idlEnumID">TrackDefaultType</span> {
+    "<a class="idlEnumItem" href="#idl-def-TrackDefaultType.audio">audio</a>",
+    "<a class="idlEnumItem" href="#idl-def-TrackDefaultType.video">video</a>",
+    "<a class="idlEnumItem" href="#idl-def-TrackDefaultType.text">text</a>"
+};</span></pre><table class="simple"><tbody><tr><th colspan="2">Enumeration description</th></tr><tr><td><code id="idl-def-TrackDefaultType.audio">audio</code></td><td>
+          Indicates that the information in the <a class="idlType" href="#idl-def-TrackDefault"><code>TrackDefault</code></a> object should only be used when
+          creating <a class="idlType" href="#idl-def-AudioTrack"><code>AudioTrack</code></a> objects.
+        </td></tr><tr><td><code id="idl-def-TrackDefaultType.video">video</code></td><td>
+          Indicates that the information in the  <a class="idlType" href="#idl-def-TrackDefault"><code>TrackDefault</code></a> object should only be used when
+          creating <a class="idlType" href="#idl-def-VideoTrack"><code>VideoTrack</code></a> objects.
+        </td></tr><tr><td><code id="idl-def-TrackDefaultType.text">text</code></td><td>
+          Indicates that the  information in the <a class="idlType" href="#idl-def-TrackDefault"><code>TrackDefault</code></a> object should only be used when
+          creating <a class="idlType" href="#idl-def-TextTrack"><code>TextTrack</code></a> objects.
+        </td></tr></tbody></table>
+
+      <pre class="idl"><span class="idlInterface" id="idl-def-TrackDefault">[<span class="idlCtor"> <span class="idlCtorKeyword"></span><span class="idlCtorName"><a href="#widl-ctor-TrackDefault--TrackDefaultType-type-DOMString-language-sequence-kinds-DOMString-byteStreamTrackID">Constructor</a></span> (<span class="idlParam"><span class="idlParamType"><a class="idlType" href="#idl-def-TrackDefaultType"><code>TrackDefaultType</code></a></span> <span class="idlParamName">type</span></span>, <span class="idlParam"><span class="idlParamType">DOMString</span> <span class="idlParamName">language</span></span>, <span class="idlParam"><span class="idlParamType">sequence</span> <span class="idlParamName">kinds</span></span>, <span class="idlParam">optional <span class="idlParamType">DOMString</span> <span class="idlParamName">byteStreamTrackID</span> = <span class="idlDefaultValue">""</span></span>)</span>]
+interface <span class="idlInterfaceID">TrackDefault</span> {
+<span class="idlAttribute">    readonly    attribute <span class="idlAttrType"><a class="idlType" href="#idl-def-TrackDefaultType"><code>TrackDefaultType</code></a></span> <span class="idlAttrName"><a href="#widl-TrackDefault-type">type</a></span>;</span>
+<span class="idlAttribute">    readonly    attribute <span class="idlAttrType">DOMString</span>        <span class="idlAttrName"><a href="#widl-TrackDefault-byteStreamTrackID">byteStreamTrackID</a></span>;</span>
+<span class="idlAttribute">    readonly    attribute <span class="idlAttrType">DOMString</span>        <span class="idlAttrName"><a href="#widl-TrackDefault-language">language</a></span>;</span>
+<span class="idlAttribute">    readonly    attribute <span class="idlAttrType">DOMString[]</span>      <span class="idlAttrName"><a href="#widl-TrackDefault-kinds">kinds</a></span>;</span>
+};</span></pre><section id="constructors"><h3 id="h3_constructors" role="heading" aria-level="2"><span class="secno">6.1 </span>Constructors</h3><dl class="constructors"><dt id="widl-ctor-TrackDefault--TrackDefaultType-type-DOMString-language-sequence-kinds-DOMString-byteStreamTrackID"><code>TrackDefault</code></dt><dd>
+          
+        <table class="parameters"><tbody><tr><th>Parameter</th><th>Type</th><th>Nullable</th><th>Optional</th><th>Description</th></tr><tr><td class="prmName">type</td><td class="prmType"><code><a class="idlType" href="#idl-def-TrackDefaultType"><code>TrackDefaultType</code></a></code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptFalse"><span role="img" aria-label="False">✘</span></td><td class="prmDesc"></td></tr><tr><td class="prmName">language</td><td class="prmType"><code>DOMString</code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptFalse"><span role="img" aria-label="False">✘</span></td><td class="prmDesc"></td></tr><tr><td class="prmName">kinds</td><td class="prmType"><code>sequence</code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptFalse"><span role="img" aria-label="False">✘</span></td><td class="prmDesc"></td></tr><tr><td class="prmName">byteStreamTrackID</td><td class="prmType"><code>DOMString = ""</code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptTrue"><span role="img" aria-label="True">✔</span></td><td class="prmDesc"></td></tr></tbody></table><p>When this method is invoked, the user agent must run the following steps:</p><ol class="method-algorithm">
+            <li>if <var>language</var> is not an empty string or <var>language</var> is not a BCP 47
+              language tag, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_access_err">INVALID_ACCESS_ERR</a></code> and abort these steps.</li>
+            <li>
+              <dl class="switch">
+                <dt>If <var>type</var> equals <code><a href="#idl-def-TrackDefaultType.audio">"audio"</a></code>:</dt>
+                <dd>
+                  If any string in <var>kinds</var> contains a value that is not listed as applying to
+                  audio in the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-TrackList-getKind-categories">kind categories table</a></code>, then throw an
+                  <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_access_err">INVALID_ACCESS_ERR</a></code> and abort these steps.
+                </dd>
+                <dt>If <var>type</var> equals <code><a href="#idl-def-TrackDefaultType.video">"video"</a></code>:</dt>
+                <dd>
+                  If any string in <var>kinds</var> contains a value that is not listed as applying to
+                  video in the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-TrackList-getKind-categories">kind categories table</a></code>, then throw an
+                  <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_access_err">INVALID_ACCESS_ERR</a></code> and abort these steps.
+                </dd>
+
+                <dt>If <var>type</var> equals <code><a href="#idl-def-TrackDefaultType.text">"text"</a></code>:</dt>
+                <dd>
+                  If any string in <var>kinds</var> contains a value that is not listed in the
+                  <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#text-track-kind">text track kind list</a></code>, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_access_err">INVALID_ACCESS_ERR</a></code>
+                  and abort these steps.
+                </dd>
+              </dl>
+            </li>
+            <li>Set the <code><a href="#widl-TrackDefault-type">type</a></code> attribute on this new object to <var>type</var>.</li>
+            <li>Set the <code><a href="#widl-TrackDefault-language">language</a></code> attribute on this new object to <var>language</var>.</li>
+            <li>Set the <code><a href="#widl-TrackDefault-kinds">kinds</a></code> attribute to on this new object <var>kinds</var>.</li>
+            <li>Set the <code><a href="#widl-TrackDefault-byteStreamTrackID">byteStreamTrackID</a></code> attribute on this new object to <var>byteStreamTrackID</var>.</li>
+          </ol></dd></dl></section><section id="attributes-4"><h3 id="h3_attributes-4" role="heading" aria-level="2"><span class="secno">6.2 </span>Attributes</h3><dl class="attributes"><dt id="widl-TrackDefault-byteStreamTrackID"><code>byteStreamTrackID</code> of type <span class="idlAttrType">DOMString</span>, readonly   </dt><dd>
+          <p>The decimal string representation of the <a href="#track-id">Track ID</a> that identifies the specific
+            track that this object should apply to. An empty string indicates that this object can be
+            used for any track of the appropriate type. (i.e. any <a class="idlType" href="#idl-def-AudioTrack"><code>AudioTrack</code></a> if
+            <code><a href="#widl-TrackDefault-type">type</a></code> equals <code><a href="#idl-def-TrackDefaultType.audio">"audio"</a></code>).</p>
+        </dd><dt id="widl-TrackDefault-kinds"><code>kinds</code> of type array of <span class="idlAttrType">DOMString</span>, readonly   </dt><dd>
+          <p>The default kinds used when an <a href="#init-segment">initialization segment</a> does not contain kind
+          information for a new track. See <a href="#sourcebuffer-init-segment-received">initialization segment received algorithm</a> for details.</p>
+        </dd><dt id="widl-TrackDefault-language"><code>language</code> of type <span class="idlAttrType">DOMString</span>, readonly   </dt><dd>
+          <p>The default language to use when an <a href="#init-segment">initialization segment</a> does not contain language
+          information for a new track. See <a href="#sourcebuffer-init-segment-received">initialization segment received algorithm</a> for details.</p>
+        </dd><dt id="widl-TrackDefault-type"><code>type</code> of type <span class="idlAttrType"><a class="idlType" href="#idl-def-TrackDefaultType"><code>TrackDefaultType</code></a></span>, readonly   </dt><dd>
+          <p>The type of track that can be constructed using the information in this object.</p>
+        </dd></dl></section>
+    </section>
+
+    <section id="trackdefaultlist" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#trackdefaultlist">
+      <!--OddPage--><h2 id="h2_trackdefaultlist" role="heading" aria-level="1"><span class="secno">7. </span>TrackDefaultList Object</h2>
+      <p>TrackDefaultList is a simple container object for <a class="idlType" href="#idl-def-TrackDefault"><code>TrackDefault</code></a> objects. It provides read-only array access.</p>
+
+      <pre class="idl"><span class="idlInterface" id="idl-def-TrackDefaultList">[<span class="idlCtor"> <span class="idlCtorKeyword"></span><span class="idlCtorName"><a href="#widl-ctor-TrackDefaultList--sequence-TrackDefault--trackDefaults">Constructor</a></span> (<span class="idlParam"><span class="idlParamType">sequence&lt;<a class="idlType" href="#idl-def-TrackDefault"><code>TrackDefault</code></a>&gt;</span> <span class="idlParamName">trackDefaults</span></span>)</span>]
+interface <span class="idlInterfaceID">TrackDefaultList</span> {
+<span class="idlAttribute">    readonly    attribute <span class="idlAttrType">unsigned long</span> <span class="idlAttrName"><a href="#widl-TrackDefaultList-length">length</a></span>;</span>
+<span class="idlMethod">    <span class="idlMethType">getter</span> <span class="idlMethName"><a href="#widl-TrackDefaultList-TrackDefault-getter-unsigned-long-index">TrackDefault</a></span> (<span class="idlParam"><span class="idlParamType">unsigned long</span> <span class="idlParamName">index</span></span>);</span>
+};</span></pre><section id="constructors-1"><h3 id="h3_constructors-1" role="heading" aria-level="2"><span class="secno">7.1 </span>Constructors</h3><dl class="constructors"><dt id="widl-ctor-TrackDefaultList--sequence-TrackDefault--trackDefaults"><code>TrackDefaultList</code></dt><dd>
+          
+        <table class="parameters"><tbody><tr><th>Parameter</th><th>Type</th><th>Nullable</th><th>Optional</th><th>Description</th></tr><tr><td class="prmName">trackDefaults</td><td class="prmType"><code>sequence&lt;<a class="idlType" href="#idl-def-TrackDefault"><code>TrackDefault</code></a>&gt;</code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptFalse"><span role="img" aria-label="False">✘</span></td><td class="prmDesc"></td></tr></tbody></table><p>When this method is invoked, the user agent must run the following steps:</p><ol class="method-algorithm">
+            <li>If <var>trackDefaults</var> contains two or more <a class="idlType" href="#idl-def-TrackDefault"><code>TrackDefault</code></a> objects with
+              the same <code><a href="#widl-TrackDefault-type">type</a></code> and have
+              <code><a href="#widl-TrackDefault-byteStreamTrackID">byteStreamTrackID</a></code> equal to an empty string, then throw an
+              <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_access_err">INVALID_ACCESS_ERR</a></code> and abort these steps.
+              <div class="note"><div class="note-title" id="h_note_38" role="heading" aria-level="3"><span>Note</span></div><p>This ensures that there is only one "byteStreamTrackID independent"
+                default for each <a class="idlType" href="#idl-def-TrackDefaultType"><code>TrackDefaultType</code></a> value.</p></div></li>
+            <li>Store a copy of <var>trackDefaults</var> in this new object so the values can be returned
+              by the accessor methods.</li>
+          </ol></dd></dl></section><section id="attributes-5"><h3 id="h3_attributes-5" role="heading" aria-level="2"><span class="secno">7.2 </span>Attributes</h3><dl class="attributes"><dt id="widl-TrackDefaultList-length"><code>length</code> of type <span class="idlAttrType">unsigned long</span>, readonly   </dt><dd>
+          <p>Indicates the number of <a class="idlType" href="#idl-def-TrackDefault"><code>TrackDefault</code></a> objects in the list.</p>
+        </dd></dl></section><section id="methods-3"><h3 id="h3_methods-3" role="heading" aria-level="2"><span class="secno">7.3 </span>Methods</h3><dl class="methods"><dt id="widl-TrackDefaultList-TrackDefault-getter-unsigned-long-index"><code>TrackDefault</code></dt><dd>
+          <p>Allows the TrackDefault objects in the list to be accessed with an array operator (i.e. []).</p>
+
+          
+        <table class="parameters"><tbody><tr><th>Parameter</th><th>Type</th><th>Nullable</th><th>Optional</th><th>Description</th></tr><tr><td class="prmName">index</td><td class="prmType"><code>unsigned long</code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptFalse"><span role="img" aria-label="False">✘</span></td><td class="prmDesc"></td></tr></tbody></table><div><em>Return type: </em><code>getter</code></div><p>When this method is invoked, the user agent must run the following steps:</p><ol class="method-algorithm">
+            <li>If <var>index</var> is greater than or equal to the <code><a href="#widl-SourceBufferList-length">length</a></code> attribute then return undefined and abort these steps.</li>
+            <li>Return the <var>index</var>'th <a class="idlType" href="#idl-def-TrackDefault"><code>TrackDefault</code></a> object in the list.</li>
+          </ol></dd></dl></section>
+    </section>
+
+    <section id="url" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#url">
+      <!--OddPage--><h2 id="h2_url" role="heading" aria-level="1"><span class="secno">8. </span>URL Object Extensions</h2>
       <p>This section specifies extensions to the <a href="http://www.w3.org/TR/FileAPI/#URL-object">URL</a>[<cite><a class="bibref" href="#bib-FILE-API">FILE-API</a></cite>] object definition.</p>
 
       <pre class="idl"><span class="idlInterface" id="idl-def-URL">partial interface <span class="idlInterfaceID">URL</span> {
-<span class="idlMethod">    static <span class="idlMethType">DOMString</span> <span class="idlMethName"><a href="#widl-URL-createObjectURL-DOMString-MediaSource-mediaSource">createObjectURL</a></span> (<span class="idlParam"><span class="idlParamType"><a href="#idl-def-MediaSource" class="idlType"><code>MediaSource</code></a></span> <span class="idlParamName">mediaSource</span></span>);</span>
-};</span></pre><section id="methods-3"><h3 aria-level="2" role="heading" id="h3_methods-3"><span class="secno">6.1 </span>Methods</h3><dl class="methods"><dt id="widl-URL-createObjectURL-DOMString-MediaSource-mediaSource"><code>createObjectURL</code>, static</dt><dd>
-          <p>Creates URLs for <a href="#idl-def-MediaSource" class="idlType"><code>MediaSource</code></a> objects.</p>
+<span class="idlMethod">    static <span class="idlMethType">DOMString</span> <span class="idlMethName"><a href="#widl-URL-createObjectURL-DOMString-MediaSource-mediaSource">createObjectURL</a></span> (<span class="idlParam"><span class="idlParamType"><a class="idlType" href="#idl-def-MediaSource"><code>MediaSource</code></a></span> <span class="idlParamName">mediaSource</span></span>);</span>
+};</span></pre><section id="methods-4"><h3 id="h3_methods-4" role="heading" aria-level="2"><span class="secno">8.1 </span>Methods</h3><dl class="methods"><dt id="widl-URL-createObjectURL-DOMString-MediaSource-mediaSource"><code>createObjectURL</code>, static</dt><dd>
+          <p>Creates URLs for <a class="idlType" href="#idl-def-MediaSource"><code>MediaSource</code></a> objects.</p>
 
           
-          <div class="note"><div class="note-title" aria-level="3" role="heading" id="h_note_37"><span>Note</span></div><p class="">This algorithm is intended to mirror the behavior of the <a href="http://www.w3.org/TR/FileAPI/#dfn-createObjectURL">createObjectURL()</a>[<cite><a class="bibref" href="#bib-FILE-API">FILE-API</a></cite>] method with autoRevoke set to true.</p></div>
-        <table class="parameters"><tbody><tr><th>Parameter</th><th>Type</th><th>Nullable</th><th>Optional</th><th>Description</th></tr><tr><td class="prmName">mediaSource</td><td class="prmType"><code><a href="#idl-def-MediaSource" class="idlType"><code>MediaSource</code></a></code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptFalse"><span role="img" aria-label="False">✘</span></td><td class="prmDesc"></td></tr></tbody></table><div><em>Return type: </em><code>DOMString</code></div><p>When this method is invoked, the user agent must run the following steps:</p><ol class="method-algorithm">
-            <li>If <var>mediaSource</var> is NULL the return null.</li>
+          <div class="note"><div class="note-title" id="h_note_39" role="heading" aria-level="3"><span>Note</span></div><p>This algorithm is intended to mirror the behavior of the <a href="http://www.w3.org/TR/FileAPI/#dfn-createObjectURL">createObjectURL()</a>[<cite><a class="bibref" href="#bib-FILE-API">FILE-API</a></cite>] method with autoRevoke set to true.</p></div>
+        <table class="parameters"><tbody><tr><th>Parameter</th><th>Type</th><th>Nullable</th><th>Optional</th><th>Description</th></tr><tr><td class="prmName">mediaSource</td><td class="prmType"><code><a class="idlType" href="#idl-def-MediaSource"><code>MediaSource</code></a></code></td><td class="prmNullFalse"><span role="img" aria-label="False">✘</span></td><td class="prmOptFalse"><span role="img" aria-label="False">✘</span></td><td class="prmDesc"></td></tr></tbody></table><div><em>Return type: </em><code>DOMString</code></div><p>When this method is invoked, the user agent must run the following steps:</p><ol class="method-algorithm">
             <li>Return a unique <a href="#mediasource-object-url">MediaSource object URL</a> that can be used to dereference the <var>mediaSource</var> argument, and run the rest of the algorithm asynchronously.</li>
             <li><a href="http://www.w3.org/TR/html5/webappapis.html#provide-a-stable-state">provide a stable state</a></li>
             <li>Revoke the <a href="#mediasource-object-url">MediaSource object URL</a> by calling <a href="http://www.w3.org/TR/FileAPI/#dfn-revokeObjectURL">revokeObjectURL()</a> on it.</li>
           </ol></dd></dl></section>
     </section>
 
-    <section id="htmlmediaelement-extensions" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-      <!--OddPage--><h2 aria-level="1" role="heading" id="h2_htmlmediaelement-extensions"><span class="secno">7. </span>HTMLMediaElement Extensions</h2>
-      <p>This section specifies what existing attributes on the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#htmlmediaelement">HTMLMediaElement</a></code> must return when a <a href="#idl-def-MediaSource" class="idlType"><code>MediaSource</code></a> is attached to the element.</p>
+    <section id="htmlmediaelement-extensions" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#htmlmediaelement-extensions">
+      <!--OddPage--><h2 id="h2_htmlmediaelement-extensions" role="heading" aria-level="1"><span class="secno">9. </span>HTMLMediaElement Extensions</h2>
+      <p>This section specifies what existing attributes on the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#htmlmediaelement">HTMLMediaElement</a></code> must return when a <a class="idlType" href="#idl-def-MediaSource"><code>MediaSource</code></a> is attached to the element.</p>
 
       <p>The <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seekable">HTMLMediaElement.seekable</a> attribute returns a new static <a href="http://www.w3.org/TR/html5/embedded-content-0.html#normalized-timeranges-object">normalized TimeRanges object</a> created based on the following steps:</p>
       <dl class="switch">
@@ -2238,12 +2558,12 @@
       <p id="dom-htmlmediaelement.buffered">The <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-buffered">HTMLMediaElement.buffered</a></code> attribute returns a new static <a href="http://www.w3.org/TR/html5/embedded-content-0.html#normalized-timeranges-object">normalized TimeRanges object</a> created based on the following steps:</p>
       <ol>
         <li>If <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>.length equals 0 then return an empty <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#timeranges">TimeRanges</a></code> object and abort these steps.</li>
-        <li>Let <var>active ranges</var> be the ranges returned by <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> for each <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>.</li>
+        <li>Let <var>active ranges</var> be the ranges returned by <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> for each <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>.</li>
         <li>Let <var>highest end time</var> be the largest range end time in the <var>active ranges</var>.</li>
         <li>Let <var>intersection ranges</var> equal a <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#timeranges">TimeRange</a></code> object containing a single range from 0 to <var>highest end time</var>.</li>
-        <li>For each <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> run the following steps:
+        <li>For each <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> object in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> run the following steps:
           <ol>
-            <li>Let <var>source ranges</var> equal the ranges returned by the <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> attribute on the current <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a>.</li>
+            <li>Let <var>source ranges</var> equal the ranges returned by the <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> attribute on the current <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a>.</li>
             <li>If <code><a href="#widl-MediaSource-readyState">readyState</a></code> is <code><a href="#idl-def-ReadyState.ended">"ended"</a></code>, then set the end time on the last range in <var>source ranges</var> to
               <var>highest end time</var>.</li>
             <li>Let <var>new intersection ranges</var> equal the intersection between the <var>intersection ranges</var> and the <var>source ranges</var>.</li>
@@ -2254,8 +2574,8 @@
       </ol>
     </section>
 
-    <section id="htmlvideoelement-extensions" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-      <!--OddPage--><h2 aria-level="1" role="heading" id="h2_htmlvideoelement-extensions"><span class="secno">8. </span>HTMLVideoElement Extensions</h2>
+    <section id="htmlvideoelement-extensions" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#htmlvideoelement-extensions">
+      <!--OddPage--><h2 id="h2_htmlvideoelement-extensions" role="heading" aria-level="1"><span class="secno">10. </span>HTMLVideoElement Extensions</h2>
       <p>This section specifies new attributes and internal state that are being added to the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#htmlvideoelement">HTMLVideoElement</a></code>.</p>
 
       <p>Each <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#htmlvideoelement">HTMLVideoElement</a></code> will maintain a <dfn id="total-video-frame-count">total video frame count</dfn> variable that keeps
@@ -2282,12 +2602,12 @@
       </p>
 
       <pre class="idl"><span class="idlInterface" id="idl-def-HTMLVideoElement">partial interface <span class="idlInterfaceID">HTMLVideoElement</span> {
-<span class="idlMethod">    <span class="idlMethType"><a href="#idl-def-VideoPlaybackQuality" class="idlType"><code>VideoPlaybackQuality</code></a></span> <span class="idlMethName"><a href="#widl-HTMLVideoElement-getVideoPlaybackQuality-VideoPlaybackQuality">getVideoPlaybackQuality</a></span> ();</span>
-};</span></pre><section id="methods-4"><h3 aria-level="2" role="heading" id="h3_methods-4"><span class="secno">8.1 </span>Methods</h3><dl class="methods"><dt id="widl-HTMLVideoElement-getVideoPlaybackQuality-VideoPlaybackQuality"><code>getVideoPlaybackQuality</code></dt><dd>
+<span class="idlMethod">    <span class="idlMethType"><a class="idlType" href="#idl-def-VideoPlaybackQuality"><code>VideoPlaybackQuality</code></a></span> <span class="idlMethName"><a href="#widl-HTMLVideoElement-getVideoPlaybackQuality-VideoPlaybackQuality">getVideoPlaybackQuality</a></span> ();</span>
+};</span></pre><section id="methods-5"><h3 id="h3_methods-5" role="heading" aria-level="2"><span class="secno">10.1 </span>Methods</h3><dl class="methods"><dt id="widl-HTMLVideoElement-getVideoPlaybackQuality-VideoPlaybackQuality"><code>getVideoPlaybackQuality</code></dt><dd>
           <p>Provides the current the playback quality metrics.</p>
           
-        <div><em>No parameters.</em></div><div><em>Return type: </em><code><a href="#idl-def-VideoPlaybackQuality" class="idlType"><code>VideoPlaybackQuality</code></a></code></div><p>When this method is invoked, the user agent must run the following steps:</p><ol class="method-algorithm">
-            <li>Let <var>playbackQuality</var> be a new instance of <a href="#idl-def-VideoPlaybackQuality" class="idlType"><code>VideoPlaybackQuality</code></a>.</li>
+        <div><em>No parameters.</em></div><div><em>Return type: </em><code><a class="idlType" href="#idl-def-VideoPlaybackQuality"><code>VideoPlaybackQuality</code></a></code></div><p>When this method is invoked, the user agent must run the following steps:</p><ol class="method-algorithm">
+            <li>Let <var>playbackQuality</var> be a new instance of <a class="idlType" href="#idl-def-VideoPlaybackQuality"><code>VideoPlaybackQuality</code></a>.</li>
             <li>Set <var>playbackQuality</var>.<code><a href="#widl-VideoPlaybackQuality-creationTime">creationTime</a></code> to the value returned by a call to <a href="http://www.w3.org/TR/hr-time/#dom-performance-now">Performance.now()</a>.</li>
             <li>Set <var>playbackQuality</var>.<code><a href="#widl-VideoPlaybackQuality-totalVideoFrames">totalVideoFrames</a></code> to the current value of the <var><a href="#total-video-frame-count">total video frame count</a></var>.</li>
             <li>Set <var>playbackQuality</var>.<code><a href="#widl-VideoPlaybackQuality-droppedVideoFrames">droppedVideoFrames</a></code> to the current value of the <var><a href="#dropped-video-frame-count">dropped video frame count</a></var>.</li>
@@ -2297,152 +2617,51 @@
           </ol></dd></dl></section>
     </section>
 
-    <section id="audio-track-extensions" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-      <!--OddPage--><h2 aria-level="1" role="heading" id="h2_audio-track-extensions"><span class="secno">9. </span>AudioTrack Extensions</h2>
+    <section id="audio-track-extensions" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#audio-track-extensions">
+      <!--OddPage--><h2 id="h2_audio-track-extensions" role="heading" aria-level="1"><span class="secno">11. </span>AudioTrack Extensions</h2>
       <p>This section specifies extensions to the HTML <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#audiotrack">AudioTrack</a></code> definition.</p>
 
       <pre class="idl"><span class="idlInterface" id="idl-def-AudioTrack">partial interface <span class="idlInterfaceID">AudioTrack</span> {
-<span class="idlAttribute">                attribute <span class="idlAttrType">DOMString</span>     <span class="idlAttrName"><a href="#widl-AudioTrack-kind">kind</a></span>;</span>
-<span class="idlAttribute">                attribute <span class="idlAttrType">DOMString</span>     <span class="idlAttrName"><a href="#widl-AudioTrack-language">language</a></span>;</span>
-<span class="idlAttribute">    readonly    attribute <span class="idlAttrType"><a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a>?</span> <span class="idlAttrName"><a href="#widl-AudioTrack-sourceBuffer">sourceBuffer</a></span>;</span>
-};</span></pre><section id="attributes-4"><h3 aria-level="2" role="heading" id="h3_attributes-4"><span class="secno">9.1 </span>Attributes</h3><dl class="attributes"><dt id="widl-AudioTrack-kind"><code>kind</code> of type <span class="idlAttrType">DOMString</span>,            </dt><dd>
-          <p>Allows the web application to get and update the track <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-audiotrack-kind">kind</a></code>.</p>
-          <p>On getting, return the current value of the attribute. This is either the value provided when this object was created or the value provided on
-            the last successful set operation.</p><p>
-          </p><p>On setting, run the following steps:</p>
-          <ol>
-            <li>If the value being assigned to this attribute does not match one of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-TrackList-getKind-categories">kind categories</a>, then abort these steps.</li>
-            <li>Update this attribute to the new value.</li>
-            <li>If the <code><a href="#widl-AudioTrack-sourceBuffer">sourceBuffer</a></code> attribute on this track is not null, then
-              <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onchange">change</a></code> at
-              <code><a href="#widl-AudioTrack-sourceBuffer">sourceBuffer</a></code>.<code><a href="#widl-SourceBuffer-audioTracks">audioTracks</a></code>.
-            </li>
-            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onchange">change</a></code> at the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#audiotracklist">AudioTrackList</a></code> object referenced by the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-audiotracks">audioTracks</a></code> attribute on the
-              HTMLMediaElement.
-            </li>
-          </ol>
-        </dd><dt id="widl-AudioTrack-language"><code>language</code> of type <span class="idlAttrType">DOMString</span>,            </dt><dd>
-          <p>Allows the web application to get and update the track <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-audiotrack-language">language</a></code>.</p>
-          <p>On getting, return the current value of the attribute. This is either the value provided when this object was created or the value provided on
-            the last successful set operation.</p><p>
-          </p><p>On setting, run the following steps:</p>
-          <ol>
-            <li>If the value being assigned to this attribute is not an empty string or a BCP 47 language tag[<cite><a class="bibref" href="#bib-BCP47">BCP47</a></cite>], then abort these steps.</li>
-            <li>Update this attribute to the new value.</li>
-            <li>If the <code><a href="#widl-AudioTrack-sourceBuffer">sourceBuffer</a></code> attribute on this track is not null, then
-              <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onchange">change</a></code> at
-              <code><a href="#widl-AudioTrack-sourceBuffer">sourceBuffer</a></code>.<code><a href="#widl-SourceBuffer-audioTracks">audioTracks</a></code>.
-            </li>
-            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onchange">change</a></code> at the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#audiotracklist">AudioTrackList</a></code> object referenced by the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-audiotracks">audioTracks</a></code> attribute on the
-              HTMLMediaElement.
-            </li>
-          </ol>
-        </dd><dt id="widl-AudioTrack-sourceBuffer"><code>sourceBuffer</code> of type <span class="idlAttrType"><a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a></span>, readonly   , nullable</dt><dd>
-          <p>Returns the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> that created this track. Returns null if this track was not created by a <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> or the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> has been removed from the <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code> attribute of its <a href="#parent-media-source">parent media source</a>.</p>
+<span class="idlAttribute">    readonly    attribute <span class="idlAttrType"><a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a>?</span> <span class="idlAttrName"><a href="#widl-AudioTrack-sourceBuffer">sourceBuffer</a></span>;</span>
+};</span></pre><section id="attributes-6"><h3 id="h3_attributes-6" role="heading" aria-level="2"><span class="secno">11.1 </span>Attributes</h3><dl class="attributes"><dt id="widl-AudioTrack-sourceBuffer"><code>sourceBuffer</code> of type <span class="idlAttrType"><a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a></span>, readonly   , nullable</dt><dd>
+          <p>Returns the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> that created this track. Returns null if this track was not created by a <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> or the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> has been removed from the <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code> attribute of its <a href="#parent-media-source">parent media source</a>.</p>
         </dd></dl></section>
     </section>
 
-    <section id="video-track-extensions" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-      <!--OddPage--><h2 aria-level="1" role="heading" id="h2_video-track-extensions"><span class="secno">10. </span>VideoTrack Extensions</h2>
+    <section id="video-track-extensions" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#video-track-extensions">
+      <!--OddPage--><h2 id="h2_video-track-extensions" role="heading" aria-level="1"><span class="secno">12. </span>VideoTrack Extensions</h2>
       <p>This section specifies extensions to the HTML <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#videotrack">VideoTrack</a></code> definition.</p>
 
       <pre class="idl"><span class="idlInterface" id="idl-def-VideoTrack">partial interface <span class="idlInterfaceID">VideoTrack</span> {
-<span class="idlAttribute">                attribute <span class="idlAttrType">DOMString</span>     <span class="idlAttrName"><a href="#widl-VideoTrack-kind">kind</a></span>;</span>
-<span class="idlAttribute">                attribute <span class="idlAttrType">DOMString</span>     <span class="idlAttrName"><a href="#widl-VideoTrack-language">language</a></span>;</span>
-<span class="idlAttribute">    readonly    attribute <span class="idlAttrType"><a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a>?</span> <span class="idlAttrName"><a href="#widl-VideoTrack-sourceBuffer">sourceBuffer</a></span>;</span>
-};</span></pre><section id="attributes-5"><h3 aria-level="2" role="heading" id="h3_attributes-5"><span class="secno">10.1 </span>Attributes</h3><dl class="attributes"><dt id="widl-VideoTrack-kind"><code>kind</code> of type <span class="idlAttrType">DOMString</span>,            </dt><dd>
-          <p>Allows the web application to get and update the track <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-videotrack-kind">kind</a></code>.</p>
-          <p>On getting, return the current value of the attribute. This is either the value provided when this object was created or the value provided on
-            the last successful set operation.</p><p>
-          </p><p>On setting, run the following steps:</p>
-          <ol>
-            <li>If the value being assigned to this attribute does not match one of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-TrackList-getKind-categories">kind categories</a>, then abort these steps.</li>
-            <li>Update this attribute to the new value.</li>
-            <li>If the <code><a href="#widl-VideoTrack-sourceBuffer">sourceBuffer</a></code> attribute on this track is not null, then
-              <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onchange">change</a></code> at
-              <code><a href="#widl-VideoTrack-sourceBuffer">sourceBuffer</a></code>.<code><a href="#widl-SourceBuffer-videoTracks">videoTracks</a></code>.
-            </li>
-            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onchange">change</a></code> at the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#videotracklist">VideoTrackList</a></code> object referenced by the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-videotracks">videoTracks</a></code> attribute on the
-              HTMLMediaElement.
-            </li>
-          </ol>
-        </dd><dt id="widl-VideoTrack-language"><code>language</code> of type <span class="idlAttrType">DOMString</span>,            </dt><dd>
-          <p>Allows the web application to get and update the track <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-videotrack-language">language</a></code>.</p>
-          <p>On getting, return the current value of the attribute. This is either the value provided when this object was created or the value provided on
-            the last successful set operation.</p><p>
-          </p><p>On setting, run the following steps:</p>
-          <ol>
-            <li>If the value being assigned to this attribute is not an empty string or a BCP 47 language tag[<cite><a class="bibref" href="#bib-BCP47">BCP47</a></cite>], then abort these steps.</li>
-            <li>Update this attribute to the new value.</li>
-            <li>If the <code><a href="#widl-VideoTrack-sourceBuffer">sourceBuffer</a></code> attribute on this track is not null, then
-              <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onchange">change</a></code> at
-              <code><a href="#widl-VideoTrack-sourceBuffer">sourceBuffer</a></code>.<code><a href="#widl-SourceBuffer-videoTracks">videoTracks</a></code>.
-            </li>
-            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onchange">change</a></code> at the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#videotracklist">VideoTrackList</a></code> object referenced by the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-videotracks">videoTracks</a></code> attribute on the
-              HTMLMediaElement.
-            </li>
-          </ol>
-        </dd><dt id="widl-VideoTrack-sourceBuffer"><code>sourceBuffer</code> of type <span class="idlAttrType"><a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a></span>, readonly   , nullable</dt><dd>
-          <p>Returns the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> that created this track. Returns null if this track was not created by a <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> or the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> has been removed from the <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code> attribute of its <a href="#parent-media-source">parent media source</a>.</p>
-        </dd></dl></section></section>
+<span class="idlAttribute">    readonly    attribute <span class="idlAttrType"><a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a>?</span> <span class="idlAttrName"><a href="#widl-VideoTrack-sourceBuffer">sourceBuffer</a></span>;</span>
+};</span></pre><section id="attributes-7"><h3 id="h3_attributes-7" role="heading" aria-level="2"><span class="secno">12.1 </span>Attributes</h3><dl class="attributes"><dt id="widl-VideoTrack-sourceBuffer"><code>sourceBuffer</code> of type <span class="idlAttrType"><a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a></span>, readonly   , nullable</dt><dd>
+          <p>Returns the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> that created this track. Returns null if this track was not created by a <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> or the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> has been removed from the <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code> attribute of its <a href="#parent-media-source">parent media source</a>.</p>
+        </dd></dl></section>
+    </section>
 
-    <section id="text-track-extensions" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-      <!--OddPage--><h2 aria-level="1" role="heading" id="h2_text-track-extensions"><span class="secno">11. </span>TextTrack Extensions</h2>
+    <section id="text-track-extensions" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#text-track-extensions">
+      <!--OddPage--><h2 id="h2_text-track-extensions" role="heading" aria-level="1"><span class="secno">13. </span>TextTrack Extensions</h2>
       <p>This section specifies extensions to the HTML <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#texttrack">TextTrack</a></code> definition.</p>
 
       <pre class="idl"><span class="idlInterface" id="idl-def-TextTrack">partial interface <span class="idlInterfaceID">TextTrack</span> {
-<span class="idlAttribute">                attribute <span class="idlAttrType">DOMString</span>     <span class="idlAttrName"><a href="#widl-TextTrack-kind">kind</a></span>;</span>
-<span class="idlAttribute">                attribute <span class="idlAttrType">DOMString</span>     <span class="idlAttrName"><a href="#widl-TextTrack-language">language</a></span>;</span>
-<span class="idlAttribute">    readonly    attribute <span class="idlAttrType"><a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a>?</span> <span class="idlAttrName"><a href="#widl-TextTrack-sourceBuffer">sourceBuffer</a></span>;</span>
-};</span></pre><section id="attributes-6"><h3 aria-level="2" role="heading" id="h3_attributes-6"><span class="secno">11.1 </span>Attributes</h3><dl class="attributes"><dt id="widl-TextTrack-kind"><code>kind</code> of type <span class="idlAttrType">DOMString</span>,            </dt><dd>
-          <p>Allows the web application to get and update the track <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-kind">kind</a></code>.</p>
-          <p>On getting, return the current value of the attribute. This is either the value provided when this object was created or the value provided on
-            the last successful set operation.</p><p>
-          </p><p>On setting, run the following steps:</p>
-          <ol>
-            <li>If the value being assigned to this attribute does not match one of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#text-track-kind">text track kinds</a>, then abort these steps.</li>
-            <li>Update this attribute to the new value.</li>
-            <li>If the <code><a href="#widl-TextTrack-sourceBuffer">sourceBuffer</a></code> attribute on this track is not null, then
-              <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onchange">change</a></code> at
-              <code><a href="#widl-TextTrack-sourceBuffer">sourceBuffer</a></code>.<code><a href="#widl-SourceBuffer-textTracks">textTracks</a></code>.
-            </li>
-            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onchange">change</a></code> at the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#texttracklist">TextTrackList</a></code> object referenced by the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-texttracks">textTracks</a></code> attribute on the
-              HTMLMediaElement.
-            </li>
-          </ol>
-        </dd><dt id="widl-TextTrack-language"><code>language</code> of type <span class="idlAttrType">DOMString</span>,            </dt><dd>
-          <p>Allows the web application to get and update the track <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-language">language</a></code>.</p>
-          <p>On getting, return the current value of the attribute. This is either the value provided when this object was created or the value provided on
-            the last successful set operation.</p><p>
-          </p><p>On setting, run the following steps:</p>
-          <ol>
-            <li>If the value being assigned to this attribute is not an valid <a href="http://www.w3.org/TR/html5/embedded-content-0.html#text-track-language">text track language</a>, 
-              then abort these steps.</li>
-            <li>Update this attribute to the new value.</li>
-            <li>If the <code><a href="#widl-TextTrack-sourceBuffer">sourceBuffer</a></code> attribute on this track is not null, then
-              <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onchange">change</a></code> at
-              <code><a href="#widl-TextTrack-sourceBuffer">sourceBuffer</a></code>.<code><a href="#widl-SourceBuffer-textTracks">textTracks</a></code>.
-            </li>
-            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#handler-tracklist-onchange">change</a></code> at the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#texttracklist">TextTrackList</a></code> object referenced by the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-texttracks">textTracks</a></code> attribute on the
-              HTMLMediaElement.
-            </li>
-          </ol>
-        </dd><dt id="widl-TextTrack-sourceBuffer"><code>sourceBuffer</code> of type <span class="idlAttrType"><a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a></span>, readonly   , nullable</dt><dd>
-          <p>Returns the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> that created this track. Returns null if this track was not created by a <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> or the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> has been removed from the <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code> attribute of its <a href="#parent-media-source">parent media source</a>.</p>
-        </dd></dl></section></section>
+<span class="idlAttribute">    readonly    attribute <span class="idlAttrType"><a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a>?</span> <span class="idlAttrName"><a href="#widl-TextTrack-sourceBuffer">sourceBuffer</a></span>;</span>
+};</span></pre><section id="attributes-8"><h3 id="h3_attributes-8" role="heading" aria-level="2"><span class="secno">13.1 </span>Attributes</h3><dl class="attributes"><dt id="widl-TextTrack-sourceBuffer"><code>sourceBuffer</code> of type <span class="idlAttrType"><a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a></span>, readonly   , nullable</dt><dd>
+          <p>Returns the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> that created this track. Returns null if this track was not created by a <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> or the <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> has been removed from the <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code> attribute of its <a href="#parent-media-source">parent media source</a>.</p>
+        </dd></dl></section>
+    </section>
 
-    <section id="byte-stream-formats" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-      <!--OddPage--><h2 aria-level="1" role="heading" id="h2_byte-stream-formats"><span class="secno">12. </span>Byte Stream Formats</h2>
-      <p>The bytes provided through <code><a href="#widl-SourceBuffer-appendBuffer-void-ArrayBufferView-data">appendBuffer()</a></code> and <code><a href="#widl-SourceBuffer-appendStream-void-Stream-stream-unsigned-long-long-maxSize">appendStream()</a></code> for a <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> form a logical byte stream. The format and
+    <section id="byte-stream-formats" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#byte-stream-formats">
+      <!--OddPage--><h2 id="h2_byte-stream-formats" role="heading" aria-level="1"><span class="secno">14. </span>Byte Stream Formats</h2>
+      <p>The bytes provided through <code><a href="#widl-SourceBuffer-appendBuffer-void-ArrayBufferView-data">appendBuffer()</a></code> and <code><a href="#widl-SourceBuffer-appendStream-void-Stream-stream-unsigned-long-long-maxSize">appendStream()</a></code> for a <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> form a logical byte stream. The format and
         semantics of these byte streams are defined in <dfn id="byte-stream-format-specs">byte stream format specifications</dfn>. 
-        The byte stream format registry [<cite><a class="bibref" href="#bib-REGISTRY">REGISTRY</a></cite>] provides mappings between a MIME type that may be passed to <code><a href="#widl-MediaSource-addSourceBuffer-SourceBuffer-DOMString-type">addSourceBuffer()</a></code> or
-        <code><a href="#widl-MediaSource-isTypeSupported-boolean-DOMString-type">isTypeSupported()</a></code> and the byte stream format expected by a <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> created with that MIME type. Implementations are encouraged to register
-        mappings for byte stream formats they support to facilitate interoperability. The byte stream format registry [<cite><a class="bibref" href="#bib-REGISTRY">REGISTRY</a></cite>] is the authoritative source for these
-        mappings. If an implementation claims to support a MIME type listed in the registry, its <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> implementation must conform to the
+        The byte stream format registry [<cite><a class="bibref" href="#bib-MSE-REGISTRY">MSE-REGISTRY</a></cite>] provides mappings between a MIME type that may be passed to <code><a href="#widl-MediaSource-addSourceBuffer-SourceBuffer-DOMString-type">addSourceBuffer()</a></code> or
+        <code><a href="#widl-MediaSource-isTypeSupported-boolean-DOMString-type">isTypeSupported()</a></code> and the byte stream format expected by a <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> created with that MIME type. Implementations are encouraged to register
+        mappings for byte stream formats they support to facilitate interoperability. The byte stream format registry [<cite><a class="bibref" href="#bib-MSE-REGISTRY">MSE-REGISTRY</a></cite>] is the authoritative source for these
+        mappings. If an implementation claims to support a MIME type listed in the registry, its <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> implementation must conform to the
         <a href="#byte-stream-format-specs">byte stream format specification</a> listed in the registry entry.</p>
-      <div class="note"><div class="note-title" aria-level="2" role="heading" id="h_note_38"><span>Note</span></div><p class="">The byte stream format specifications in the registry are not intended to define new storage formats. They simply outline the subset of
+      <div class="note"><div class="note-title" id="h_note_40" role="heading" aria-level="2"><span>Note</span></div><p>The byte stream format specifications in the registry are not intended to define new storage formats. They simply outline the subset of
         existing storage format structures that implementations of this specification will accept.</p></div>
-      <div class="note"><div class="note-title" aria-level="2" role="heading" id="h_note_39"><span>Note</span></div><p class="">Byte stream format parsing and validation is implemented in the <a href="#sourcebuffer-segment-parser-loop">segment parser loop</a> algorithm.</p></div>
+      <div class="note"><div class="note-title" id="h_note_41" role="heading" aria-level="2"><span>Note</span></div><p>Byte stream format parsing and validation is implemented in the <a href="#sourcebuffer-segment-parser-loop">segment parser loop</a> algorithm.</p></div>
 
       <p>This section provides general requirements for all byte stream format specifications:</p>
       <ul>
@@ -2452,25 +2671,25 @@
           <ol>
             <li>
               <p>The number and type of tracks are not consistent.</p>
-              <div class="note"><div class="note-title" aria-level="2" role="heading" id="h_note_40"><span>Note</span></div><p class="">For example, if the first <a href="#init-segment">initialization segment</a> has 2 audio tracks and 1 video track, then all <a href="#init-segment">initialization segments</a> that follow it in the byte stream must describe 2 audio tracks and 1 video track.</p></div>
+              <div class="note"><div class="note-title" id="h_note_42" role="heading" aria-level="2"><span>Note</span></div><p>For example, if the first <a href="#init-segment">initialization segment</a> has 2 audio tracks and 1 video track, then all <a href="#init-segment">initialization segments</a> that follow it in the byte stream must describe 2 audio tracks and 1 video track.</p></div>
             </li>
             <li><a href="#track-id">Track IDs</a> are not the same across <a href="#init-segment">initialization segments</a>, for segments describing multiple tracks of a single type. (e.g. 2 audio tracks).</li>
-	    <li>
+        <li>
               <p>Codecs changes across <a href="#init-segment">initialization segments</a>.</p>
-              <div class="note"><div class="note-title" aria-level="2" role="heading" id="h_note_41"><span>Note</span></div><p class="">For example, a byte stream that starts with an <a href="#init-segment">initialization segment</a> that specifies a single AAC track and later contains an <a href="#init-segment">initialization segment</a> that specifies a single AMR-WB track is not allowed. Support for multiple codecs is handled with multiple <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> objects.</p></div>
+              <div class="note"><div class="note-title" id="h_note_43" role="heading" aria-level="2"><span>Note</span></div><p>For example, a byte stream that starts with an <a href="#init-segment">initialization segment</a> that specifies a single AAC track and later contains an <a href="#init-segment">initialization segment</a> that specifies a single AMR-WB track is not allowed. Support for multiple codecs is handled with multiple <a class="idlType" href="#idl-def-SourceBuffer"><code>SourceBuffer</code></a> objects.</p></div>
             </li>
           </ol>
         </li>
         <li>The user agent must support the following:
           <ol>
             <li><a href="#track-id">Track IDs</a> changing across <a href="#init-segment">initialization segments</a> if the segments describes only one track of each type.</li>
-	    <li>
+        <li>
               <p>Video frame size changes. The user agent must support seamless playback.</p>
-              <div class="note"><div class="note-title" aria-level="2" role="heading" id="h_note_42"><span>Note</span></div><p class="">This will cause the &lt;video&gt; display region to change size if the web application does not use CSS or HTML attributes (width/height) to constrain the element size.</p></div>
+              <div class="note"><div class="note-title" id="h_note_44" role="heading" aria-level="2"><span>Note</span></div><p>This will cause the &lt;video&gt; display region to change size if the web application does not use CSS or HTML attributes (width/height) to constrain the element size.</p></div>
             </li>
-	    <li>
+        <li>
               <p>Audio channel count changes. The user agent may support this seamlessly and could trigger downmixing.</p>
-              <div class="note"><div class="note-title" aria-level="2" role="heading" id="h_note_43"><span>Note</span></div><p class="">This is a quality of implementation issue because changing the channel count may require reinitializing the audio device, resamplers, and channel mixers which tends to be audible.</p></div>
+              <div class="note"><div class="note-title" id="h_note_45" role="heading" aria-level="2"><span>Note</span></div><p>This is a quality of implementation issue because changing the channel count may require reinitializing the audio device, resamplers, and channel mixers which tends to be audible.</p></div>
             </li>
           </ol>
         </li>
@@ -2478,35 +2697,35 @@
           <ol>
             <li>Map all timestamps to the same <a href="http://www.w3.org/TR/html5/embedded-content-0.html#media-timeline">media timeline</a>.</li>
             <li>Support seamless playback of <a href="#media-segment">media segments</a> having a timestamp gap smaller than the audio frame size. User agent must not reflect these gaps in the <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> attribute.
-	      <div class="note"><div class="note-title" aria-level="2" role="heading" id="h_note_44"><span>Note</span></div><p class="">This is intended to simplify switching between audio streams where the frame boundaries don't always line up across encodings (e.g. Vorbis).</p></div>
+          <div class="note"><div class="note-title" id="h_note_46" role="heading" aria-level="2"><span>Note</span></div><p>This is intended to simplify switching between audio streams where the frame boundaries don't always line up across encodings (e.g. Vorbis).</p></div>
             </li>
           </ol>
         </li>
         <li>The user agent must run the <a href="#end-of-stream-algorithm">end of stream algorithm</a> with the <var>error</var> parameter set to <code><a href="#idl-def-EndOfStreamError.decode">"decode"</a></code> when any combination of an <a href="#init-segment">initialization segment</a> and any contiguous sequence of <a href="#media-segment">media segments</a> satisfies the
           following conditions:
-	  <ol>
+      <ol>
             <li>The number and type (audio, video, text, etc.) of all tracks in the <a href="#media-segment">media segments</a> are not identified.</li>
             <li>The decoding capabilities needed to decode each track (i.e. codec and codec parameters) are not provided.</li>
             <li>Encryption parameters necessary to decrypt the content (except the encryption key itself) are not provided for all encrypted tracks.</li>
             <li>All information necessary to decode and render the earliest <a href="#random-access-point">random access point</a> in the sequence of <a href="#media-segment">media segments</a> and all subsequence samples in the sequence
               (in presentation time) are not provided. This includes in particular,
-	      <ul>
-	        <li>Information that determines the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-video-intrinsic-width">intrinsic width and height</a> of the video (specifically, this requires either the picture or pixel aspect ratio, together with the encoded
+          <ul>
+            <li>Information that determines the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-video-intrinsic-width">intrinsic width and height</a> of the video (specifically, this requires either the picture or pixel aspect ratio, together with the encoded
                   resolution).</li>
-	        <li>Information necessary to convert the video decoder output to a format suitable for display</li>
-	      </ul>
-	    </li>
-	    <li>Information necessary to compute the global <a href="#presentation-timestamp">presentation timestamp</a> of every sample in the sequence of <a href="#media-segment">media segments</a> is not provided.</li>
-	  </ol>
-	  <p>For example, if I1 is associated with M1, M2, M3 then the above must hold for all the combinations I1+M1, I1+M2, I1+M1+M2, I1+M2+M3, etc.</p>
+            <li>Information necessary to convert the video decoder output to a format suitable for display</li>
+          </ul>
+        </li>
+        <li>Information necessary to compute the global <a href="#presentation-timestamp">presentation timestamp</a> of every sample in the sequence of <a href="#media-segment">media segments</a> is not provided.</li>
+      </ol>
+      <p>For example, if I1 is associated with M1, M2, M3 then the above must hold for all the combinations I1+M1, I1+M2, I1+M1+M2, I1+M2+M3, etc.</p>
         </li>
       </ul>
       <p>Byte stream specifications must at a minimum define constraints which ensure that the above requirements hold. Additional constraints may be defined, for example to simplify implementation.</p>
 
     </section>
 
-    <section id="examples" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-      <!--OddPage--><h2 aria-level="1" role="heading" id="h2_examples"><span class="secno">13. </span>Examples</h2>
+    <section id="examples" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#examples">
+      <!--OddPage--><h2 id="h2_examples" role="heading" aria-level="1"><span class="secno">15. </span>Examples</h2>
       <p>Example use of the Media Source Extensions</p>
       <div class="block">
         <div class="blockContent">
@@ -2604,13 +2823,13 @@
       </div>
     </section>
 
-    <section id="acknowledgements" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-      <!--OddPage--><h2 aria-level="1" role="heading" id="h2_acknowledgements"><span class="secno">14. </span>Acknowledgments</h2>
-      The editors would like to thank Alex Giladi, Bob Lund, Chris Poole, Cyril Concolato, David Dorwin, David Singer, Duncan Rowden, Frank Galligan, Glenn Adams, Jerry Smith, Joe Steele, John Simmons, Kevin Streeter, Mark Vickers, Matt Ward, Michael Thornburgh, Philip Jägenstedt, Pierre Lemieux, Ralph Giles, Steven Robertson, and Tatsuya Igarashi for their contributions to this specification.
+    <section id="acknowledgements" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#acknowledgements">
+      <!--OddPage--><h2 id="h2_acknowledgements" role="heading" aria-level="1"><span class="secno">16. </span>Acknowledgments</h2>
+      The editors would like to thank Alex Giladi, Bob Lund, Chris Poole, Cyril Concolato, David Dorwin, David Singer, Duncan Rowden, Frank Galligan, Glenn Adams, Jer Noble, Jerry Smith, Joe Steele, John Simmons, Kevin Streeter, Mark Vickers, Matt Ward, Matthew Gregan, Michael Thornburgh, Philip Jägenstedt, Pierre Lemieux, Ralph Giles, Steven Robertson, and Tatsuya Igarashi for their contributions to this specification.
     </section>
 
-    <section id="revision-history" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter">
-      <!--OddPage--><h2 aria-level="1" role="heading" id="h2_revision-history"><span class="secno">15. </span>Revision History</h2>
+    <section id="revision-history" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#revision-history">
+      <!--OddPage--><h2 id="h2_revision-history" role="heading" aria-level="1"><span class="secno">17. </span>Revision History</h2>
       <table class="old-table">
         <thead>
           <tr>
@@ -2620,7 +2839,77 @@
         </thead>
         <tbody>
           <tr>
-            <td>10 December 2013</td>
+            <td>20 June 2014</td>
+            <td>
+              <ul>
+                <li>Bug 26032 - Set need random access point flag on all track buffers when a new init
+                  segment is received.</li>
+                <li>Bug 25845 - Clarify SourceBuffer.buffered getter behavior.</li>
+              </ul>
+            </td>
+          </tr>
+          <tr>
+            <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/a38529a7910d/media-source/media-source.html">13 June 2014</a></td>
+            <td>
+              <ul>
+                <li>Bug 25995 - Fix conditions in "remove existing coded frames" step.</li>
+                <li>Bug 25999 - Change appendWindowStart assignments to reference presentation start time.</li>
+                <li>Bug 26000 - Make it explicit that SourceBuffer.remove() throws an exception if duration equals NaN.</li>
+                <li>Bug 25846 - Update end of stream algorithm to invoke the append error algorithm on decode errors.</li>
+                <li>Bug 25850 - Specify SourceBuffer.trackDefaults initial value and setter/getter behavior.</li>
+                <li>Bug 25998 - Move presentation &amp; decode timestamp checks after append window filtering steps.</li>
+              </ul>
+            </td>
+          </tr>
+          <tr>
+            <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/01c9e30d71b0/media-source/media-source.html">21 May 2014</a></td>
+            <td>
+              <ul>
+                <li>Bug 24370 - Add TrackDefault object and remove kind/language overloads.</li>
+              </ul>
+            </td>
+          </tr>
+          <tr>
+            <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/3e8dfccbfded/media-source/media-source.html">20 May 2014</a></td>
+            <td>
+              <ul>
+                <li>Bug 25518 - Make remove() end parameter an unrestricted double.</li>
+                <li>Bug 25580 - Add informative reference to byte stream format registry.</li>
+              </ul>
+            </td>
+          </tr>
+          <tr>
+            <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/29f17705b5c2/media-source/media-source.html">29 April 2014</a></td>
+            <td>
+              <ul>
+                <li>Bug 25347 - Remove unnecessary null &amp; invalid enum value checks.</li>
+                <li>Bug 25505 - Introduce "generate timestamps flag" to handle MPEG audio timestamp
+                  generation.</li>
+              </ul>
+            </td>
+          </tr>
+          <tr>
+            <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/d471a4412040/media-source/media-source.html">01 April 2014</a></td>
+            <td>
+              <ul>
+                <li>Bug 25157 - Fix typo in coded frame duration example.</li>
+                <li>Bug 24854 - Moved negative timestamp checking to allow "sequence" mode to handle
+                  appending coded frames in reverse order</li>
+                <li>Bug 24820 - Renamed highest presentation end timestamp to group end timestamp and
+                  fixed a few related issues.</li>
+              </ul>
+            </td>
+          </tr>
+          <tr>
+            <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/cad94fce3b90/media-source/media-source.html">03 March 2014</a></td>
+            <td>
+              <ul>
+                <li>Bug 24347 - Fix HAVE_FUTURE_DATA transition condition in SourceBuffer monitoring algorithm.</li>
+              </ul>
+            </td>
+          </tr>
+          <tr>
+            <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/d8ad50e85da3/media-source/media-source.html">10 December 2013</a></td>
             <td>
               <ul>
                 <li>Bug 23169 - Restore totalFrameDelay units to seconds.</li>
@@ -2756,7 +3045,7 @@
                 <li>Fix links for all types in the IDL that are defined in external specifications.</li>
               </ul>
             </td>
-          </tr><tr>
+          <tr>
             <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/9ff5e42736b6/media-source/media-source.html">06 May 2013</a></td>
             <td>
               <ul>
@@ -2866,7 +3155,7 @@
             </td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/77975abeec41/media-source/media-source.html">05 February 2013</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/77975abeec41/media-source/media-source.html">05 February 2013</a></td>
             <td>
               <ul>
                 <li>Bug 19676 - Added a note clarifying that the internal timestamp representation doesn't have to be a double.</li>
@@ -2878,7 +3167,7 @@
             </td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/b35722b0cd8f/media-source/media-source.html">31 January 2013</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/b35722b0cd8f/media-source/media-source.html">31 January 2013</a></td>
             <td>
               <ul>
                 <li>Make remove() asynchronous.</li>
@@ -2887,7 +3176,7 @@
             </td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/aae26333e7d1/media-source/media-source.html">30 January 2013</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/aae26333e7d1/media-source/media-source.html">30 January 2013</a></td>
             <td>
               <ul>
                 <li>Remove early abort step on 0-byte appends so the same events fire as a normal append with bytes.</li>
@@ -2897,11 +3186,11 @@
             </td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/fd2a58eec443/media-source/media-source.html">15 January 2013</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/fd2a58eec443/media-source/media-source.html">15 January 2013</a></td>
             <td>Replace setTrackInfo() and getSourceBuffer() with AudioTrack, VideoTrack, and TextTrack extensions.</td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/52a85235137b/media-source/media-source.html">04 January 2013</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/52a85235137b/media-source/media-source.html">04 January 2013</a></td>
             <td>
               <ul>
                 <li>Renamed append() to appendArrayBuffer() and made appending asynchronous.</li>
@@ -2912,13 +3201,13 @@
             </td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/53ea7c19edd2/media-source/media-source.html">14 December 2012</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/53ea7c19edd2/media-source/media-source.html">14 December 2012</a></td>
             <td>
               Pubrules, Link Checker, and Markup Validation fixes.
             </td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/e1c91093dfdc/media-source/media-source.html">13 December 2012</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/e1c91093dfdc/media-source/media-source.html">13 December 2012</a></td>
             <td>
               <ul>
                 <li>Added MPEG-2 Transport Stream section.</li>
@@ -2930,7 +3219,7 @@
             </td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/ee6e8ae9337c/media-source/media-source.html">08 December 2012</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/ee6e8ae9337c/media-source/media-source.html">08 December 2012</a></td>
             <td>
               <ul>
                 <li>Added MediaSource.getSourceBuffer() methods.</li>
@@ -2939,7 +3228,7 @@
             </td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/43be42e69533/media-source/media-source.html">06 December 2012</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/43be42e69533/media-source/media-source.html">06 December 2012</a></td>
             <td>
               <ul>
                 <li>append() now throws a QUOTA_EXCEEDED_ERR when the SourceBuffer is full.</li>
@@ -2951,7 +3240,7 @@
             </td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/0c638da9a67a/media-source/media-source.html">28 November 2012</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/0c638da9a67a/media-source/media-source.html">28 November 2012</a></td>
             <td>
               <ul>
                 <li>Added transition to HAVE_METADATA when current playback position is removed.</li>
@@ -2961,90 +3250,90 @@
               </ul>
             </td>
           </tr>
-	  <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/3e4d27b3a98f/media-source/media-source.html">09 November 2012</a></td>
+      <tr>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/3e4d27b3a98f/media-source/media-source.html">09 November 2012</a></td>
             <td>Converted document to ReSpec.</td>
           </tr>
-	  <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/e029f71aafca/media-source/media-source.html">18 October 2012</a></td>
+      <tr>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/e029f71aafca/media-source/media-source.html">18 October 2012</a></td>
             <td>Refactored SourceBuffer.append() &amp; added SourceBuffer.remove().</td>
           </tr>
-	  <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/6d127e69c9f8/media-source/media-source.html">8 October 2012</a></td>
+      <tr>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/6d127e69c9f8/media-source/media-source.html">8 October 2012</a></td>
             <td>
-	      <ul>
-	        <li>Defined what HTMLMediaElement.seekable and HTMLMediaElement.buffered should return.</li>
-	        <li>Updated seeking algorithm to run inside Step 10 of the HTMLMediaElement seeking algorithm.</li>
-	        <li>Removed transition from "ended" to "open" in the seeking algorithm.</li>
-	        <li>Clarified all the event targets.</li>
-	      </ul>
-	    </td>
+          <ul>
+            <li>Defined what HTMLMediaElement.seekable and HTMLMediaElement.buffered should return.</li>
+            <li>Updated seeking algorithm to run inside Step 10 of the HTMLMediaElement seeking algorithm.</li>
+            <li>Removed transition from "ended" to "open" in the seeking algorithm.</li>
+            <li>Clarified all the event targets.</li>
+          </ul>
+        </td>
           </tr>
-	  <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/7bab66368f2c/media-source/media-source.html">1 October 2012</a></td>
+      <tr>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/7bab66368f2c/media-source/media-source.html">1 October 2012</a></td>
             <td>Fixed various addsourcebuffer &amp; removesourcebuffer bugs and allow append() in ended state.</td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/349559debcc3/media-source/media-source.html">13 September 2012</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/349559debcc3/media-source/media-source.html">13 September 2012</a></td>
             <td>Updated endOfStream() behavior to change based on the value of HTMLMediaElement.readyState.</td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/ca093bbbbefb/media-source/media-source.html">24 August 2012</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/ca093bbbbefb/media-source/media-source.html">24 August 2012</a></td>
             <td>
-	      <ul>
-	        <li>Added early abort on to duration change algorithm.</li>
-	        <li>Added createObjectURL() IDL &amp; algorithm.</li>
+          <ul>
+            <li>Added early abort on to duration change algorithm.</li>
+            <li>Added createObjectURL() IDL &amp; algorithm.</li>
                 <li>Added Track ID &amp; Track description definitions.</li>
                 <li>Rewrote start overlap for audio frames text.</li>
                 <li>Removed rendering silence requirement from section 2.5.</li>
-	      </ul>
-	    </td>
+          </ul>
+        </td>
           </tr>
-	  <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/340786fcae83/media-source/media-source.html">22 August 2012</a></td>
+      <tr>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/340786fcae83/media-source/media-source.html">22 August 2012</a></td>
             <td>
-	      <ul>
-	        <li>Clarified WebM byte stream requirements.</li>
-	        <li>Clarified SourceBuffer.buffered return value.</li>
-	        <li>Clarified addsourcebuffer &amp; removesourcebuffer event targets.</li>
-	        <li>Clarified when media source attaches to the HTMLMediaElement.</li>
-	        <li>Introduced duration change algorithm and update relevant algorithms to use it.</li>
-	      </ul>
-	    </td>
+          <ul>
+            <li>Clarified WebM byte stream requirements.</li>
+            <li>Clarified SourceBuffer.buffered return value.</li>
+            <li>Clarified addsourcebuffer &amp; removesourcebuffer event targets.</li>
+            <li>Clarified when media source attaches to the HTMLMediaElement.</li>
+            <li>Introduced duration change algorithm and update relevant algorithms to use it.</li>
+          </ul>
+        </td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/032f7b8681d1/media-source/media-source.html">17 August 2012</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/032f7b8681d1/media-source/media-source.html">17 August 2012</a></td>
             <td>Minor editorial fixes.</td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/29687c019735/media-source/media-source.html">09 August 2012</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/29687c019735/media-source/media-source.html">09 August 2012</a></td>
             <td>Change presentation start time to always be 0 instead of using format specific rules about the first media segment appended.</td>
           </tr>
-	  <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/087ea42f59c8/media-source/media-source.html">30 July 2012</a></td>
+      <tr>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/087ea42f59c8/media-source/media-source.html">30 July 2012</a></td>
             <td>Added SourceBuffer.timestampOffset and MediaSource.duration.</td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/ab36e8e882c6/media-source/media-source.html">17 July 2012</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/ab36e8e882c6/media-source/media-source.html">17 July 2012</a></td>
             <td>Replaced SourceBufferList.remove() with MediaSource.removeSourceBuffer().</td>
           </tr>
-	  <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/b499a199e427/media-source/media-source.html">02 July 2012</a></td>
+      <tr>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/b499a199e427/media-source/media-source.html">02 July 2012</a></td>
             <td>Converted to the object-oriented API</td>
           </tr>
-	  <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/9bbfe09653e4/media-source/media-source.html">26 June 2012</a></td>
+      <tr>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/9bbfe09653e4/media-source/media-source.html">26 June 2012</a></td>
             <td>Converted to Editor's draft.</td>
           </tr>
-	  <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/e433598d22a7/media-source/media-source.html">0.5</a></td>
+      <tr>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/e433598d22a7/media-source/media-source.html">0.5</a></td>
             <td>Minor updates before proposing to <abbr title="World Wide Web Consortium">W3C</abbr> HTML-WG.</td>
           </tr>
           <tr>
             <td><a href="http://html5-mediasource-api.googlecode.com/svn/tags/0.4/draft-spec/mediasource-draft-spec.html">0.4</a></td>
             <td>Major revision. Adding source IDs, defining buffer model, and clarifying byte stream formats.</td>
           </tr>
-	  <tr>
+      <tr>
             <td><a href="http://html5-mediasource-api.googlecode.com/svn/tags/0.3/draft-spec/mediasource-draft-spec.html">0.3</a></td>
             <td>Minor text updates.</td>
           </tr>
@@ -3061,10 +3350,9 @@
     </section>
   
 
-<form id="bug-assist-form" action="//www.w3.org/Bugs/Public/enter_bug.cgi" target="_blank">See a problem? Select text and <input type="submit" accesskey="f" value="file a bug" style="font-family: Tahoma, sans-serif; font-size: 10px;"><input type="hidden" name="comment" value=""><input type="hidden" name="short_desc" value="[MSE] "><input type="hidden" name="product" value="HTML WG"><input type="hidden" name="component" value="Media Source Extensions">.</form><section id="references" class="appendix" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter"><!--OddPage--><h2 aria-level="1" role="heading" id="h2_references"><span class="secno">A. </span>References</h2><section id="normative-references" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter"><h3 aria-level="2" role="heading" id="h3_normative-references"><span class="secno">A.1 </span>Normative references</h3><dl class="bibliography" about=""><dt id="bib-BCP47">[BCP47]</dt><dd rel="dcterms:requires">A. Phillips; M. Davis. <a href="http://tools.ietf.org/html/bcp47"><cite>Tags for Identifying Languages</cite></a>. September 2009. IETF Best Current Practice. URL: <a href="http://tools.ietf.org/html/bcp47">http://tools.ietf.org/html/bcp47</a>
-</dd><dt id="bib-FILE-API">[FILE-API]</dt><dd rel="dcterms:requires">Arun Ranganathan; Jonas Sicking. <a href="http://www.w3.org/TR/FileAPI/"><cite>File API</cite></a>. 12 September 2013. W3C Last Call Working Draft. URL: <a href="http://www.w3.org/TR/FileAPI/">http://www.w3.org/TR/FileAPI/</a>
-</dd><dt id="bib-HTML5">[HTML5]</dt><dd rel="dcterms:requires">Robin Berjon; Steve Faulkner; Travis Leithead; Erika Doyle Navara; Edward O'Connor; Silvia Pfeiffer. <a href="http://www.w3.org/TR/html5/"><cite>HTML5</cite></a>. 6 August 2013. W3C Candidate Recommendation. URL: <a href="http://www.w3.org/TR/html5/">http://www.w3.org/TR/html5/</a>
-</dd><dt id="bib-STREAMS-API">[STREAMS-API]</dt><dd rel="dcterms:requires">Feras Moussa, Takeshi Yoshino. <a href="http://www.w3.org/TR/2013/WD-streams-api-20131105/"><cite>Streams API</cite></a>. 05 November 2013. W3C Working Draft. URL: <a href="http://www.w3.org/TR/streams-api/">http://www.w3.org/TR/2013/WD-streams-api-20131105/</a>
+<form id="bug-assist-form" action="//www.w3.org/Bugs/Public/enter_bug.cgi" target="_blank">See a problem? Select text and <input accesskey="f" style="font-family: Tahoma,sans-serif; font-size: 10px;" type="submit" value="file a bug"><input name="comment" type="hidden" value=""><input name="short_desc" type="hidden" value="[MSE] "><input name="product" type="hidden" value="HTML WG"><input name="component" type="hidden" value="Media Source Extensions">.</form><section class="appendix" id="references" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#references"><!--OddPage--><h2 id="h2_references" role="heading" aria-level="1"><span class="secno">A. </span>References</h2><section id="normative-references" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#normative-references"><h3 id="h3_normative-references" role="heading" aria-level="2"><span class="secno">A.1 </span>Normative references</h3><dl class="bibliography" about=""><dt id="bib-FILE-API">[FILE-API]</dt><dd rel="dcterms:requires">Arun Ranganathan; Jonas Sicking. <a href="http://www.w3.org/TR/FileAPI/"><cite>File API</cite></a>. 12 September 2013. W3C Last Call Working Draft. URL: <a href="http://www.w3.org/TR/FileAPI/">http://www.w3.org/TR/FileAPI/</a>
+</dd><dt id="bib-HTML5">[HTML5]</dt><dd rel="dcterms:requires">Robin Berjon; Steve Faulkner; Travis Leithead; Erika Doyle Navara; Edward O'Connor; Silvia Pfeiffer. <a href="http://www.w3.org/TR/html5/"><cite>HTML5</cite></a>. 17 June 2014. W3C Last Call Working Draft. URL: <a href="http://www.w3.org/TR/html5/">http://www.w3.org/TR/html5/</a>
+</dd><dt id="bib-STREAMS-API">[STREAMS-API]</dt><dd rel="dcterms:requires">Feras Moussa; Takeshi Yoshino. <a href="http://www.w3.org/TR/2013/WD-streams-api-20131105/"><cite>Streams API</cite></a>. W3C Working Draft. URL: <a href="http://www.w3.org/TR/2013/WD-streams-api-20131105/">http://www.w3.org/TR/2013/WD-streams-api-20131105/</a>
 </dd><dt id="bib-TYPED-ARRAYS">[TYPED-ARRAYS]</dt><dd rel="dcterms:requires">David Herman; Kenneth Russell. <a href="https://www.khronos.org/registry/typedarray/specs/latest/"><cite>Typed Array Specification</cite></a>. 26 June 2013. Khronos Working Draft. URL: <a href="https://www.khronos.org/registry/typedarray/specs/latest/">https://www.khronos.org/registry/typedarray/specs/latest/</a>
-</dd></dl></section><section id="informative-references" typeof="bibo:Chapter" resource="#ref" rel="bibo:Chapter"><h3 aria-level="2" role="heading" id="h3_informative-references"><span class="secno">A.2 </span>Informative references</h3><dl class="bibliography" about=""><dt id="bib-REGISTRY">[REGISTRY]</dt><dd rel="dcterms:references">Aaron Colwell <a href="http://www.w3.org/2013/12/byte-stream-format-registry/"><cite>Media Source Extensions Byte Stream Format Registry</cite></a>. 02 December 2013 URL: <a href="http://www.w3.org/2013/12/byte-stream-format-registry/">http://www.w3.org/2013/12/byte-stream-format-registry/</a>
+</dd></dl></section><section id="informative-references" typeof="bibo:Chapter" rel="bibo:Chapter" resource="#informative-references"><h3 id="h3_informative-references" role="heading" aria-level="2"><span class="secno">A.2 </span>Informative references</h3><dl class="bibliography" about=""><dt id="bib-MSE-REGISTRY">[MSE-REGISTRY]</dt><dd rel="dcterms:references">Aaron Colwell. <a href="http://www.w3.org/2013/12/byte-stream-format-registry/"><cite>Media Source Extensions Byte Stream Format Registry</cite></a>. URL: <a href="http://www.w3.org/2013/12/byte-stream-format-registry/">http://www.w3.org/2013/12/byte-stream-format-registry/</a>
 </dd></dl></section></section></body></html>
--- a/media-source/media-source-respec.html	Mon Jul 07 16:46:26 2014 -0700
+++ b/media-source/media-source-respec.html	Tue Jul 08 07:39:51 2014 -0700
@@ -19,6 +19,10 @@
       // if this is a LCWD, uncomment and set the end of its review period
       // lcEnd: "2009-08-05",
 
+      //publishDate: "2014-07-17",
+      previousMaturity: "CR",
+      previousPublishDate: "2014-01-09",
+
       // editors, add as many as you like
       // only "name" is required
       editors:  [
@@ -104,6 +108,7 @@
           "MSE-REGISTRY": {
               title: "Media Source Extensions Byte Stream Format Registry",
               href: "byte-stream-format-registry.html",
+              //href: "http://www.w3.org/2013/12/byte-stream-format-registry/",
               authors: ["Aaron Colwell"],
               publisher: "W3C",
           }
@@ -1577,7 +1582,6 @@
             with <var>byteStreamTrackID</var> and <var>type</var> parameters when invoked by the
             <a def-id="init-segment-received-algorithm"></a>.</p>
           <ol>
-            <ol>
             <li>If <a def-id="trackDefaults"></a> contains a <a>TrackDefault</a> object with a
               <a def-id="TrackDefault-type"></a> attribute equal to <var>type</var> and a
               <a def-id="TrackDefault-byteStreamTrackID"></a> attribute equal to
--- a/media-source/media-source.html	Mon Jul 07 16:46:26 2014 -0700
+++ b/media-source/media-source.html	Tue Jul 08 07:39:51 2014 -0700
@@ -1,3 +1,4 @@
+
 <!DOCTYPE html>
 <html lang="en" dir="ltr" typeof="bibo:Document " about="" property="dcterms:language" content="en">
 <head>
@@ -406,7 +407,7 @@
   </p>
   <h1 class="title p-name" id="title" property="dcterms:title">Media Source Extensions</h1>
   
-  <h2 property="dcterms:issued" datatype="xsd:dateTime" content="2014-06-20T23:55:05.000Z" id="w3c-editor-s-draft-20-june-2014"><abbr title="World Wide Web Consortium">W3C</abbr> Editor's Draft <time class="dt-published" datetime="2014-06-20">20 June 2014</time></h2>
+  <h2 property="dcterms:issued" datatype="xsd:dateTime" content="2014-07-08T21:37:46.000Z" id="w3c-editor-s-draft-08-july-2014"><abbr title="World Wide Web Consortium">W3C</abbr> Editor's Draft <time class="dt-published" datetime="2014-07-08">08 July 2014</time></h2>
   <dl>
     
       <dt>This version:</dt>
@@ -628,12 +629,12 @@
 
           <dt id="init-segment">Initialization Segment</dt>
           <dd>
-	    <p>A sequence of bytes that contain all of the initialization information required to decode a sequence of <a href="#media-segment">media segments</a>. This includes codec initialization data, <a href="#track-id">Track ID</a> mappings for multiplexed segments, and timestamp offsets (e.g. edit lists).</p>
+        <p>A sequence of bytes that contain all of the initialization information required to decode a sequence of <a href="#media-segment">media segments</a>. This includes codec initialization data, <a href="#track-id">Track ID</a> mappings for multiplexed segments, and timestamp offsets (e.g. edit lists).</p>
             <div class="note"><div class="note-title" aria-level="3" role="heading" id="h_note_1"><span>Note</span></div><p class="">The <a href="#byte-stream-format-specs">byte stream format specifications</a> in the byte stream format registry [<cite><a class="bibref" href="#bib-MSE-REGISTRY">MSE-REGISTRY</a></cite>] contain format specific examples.</p></div>
 
           </dd><dt id="media-segment">Media Segment</dt>
           <dd>
-	    <p>A sequence of bytes that contain packetized &amp; timestamped media data for a portion of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#media-timeline">media timeline</a>. Media segments are always associated with the most recently appended <a href="#init-segment">initialization segment</a>.</p>
+        <p>A sequence of bytes that contain packetized &amp; timestamped media data for a portion of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#media-timeline">media timeline</a>. Media segments are always associated with the most recently appended <a href="#init-segment">initialization segment</a>.</p>
             <div class="note"><div class="note-title" aria-level="3" role="heading" id="h_note_2"><span>Note</span></div><p class="">The <a href="#byte-stream-format-specs">byte stream format specifications</a> in the byte stream format registry [<cite><a class="bibref" href="#bib-MSE-REGISTRY">MSE-REGISTRY</a></cite>] contain format specific examples.</p></div>
           </dd>
 
@@ -742,7 +743,7 @@
             <li>If the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute is not <code><a href="#idl-def-ReadyState.open">"open"</a></code> then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and abort these steps.</li>
             <li>If the <code><a href="#widl-SourceBuffer-updating">updating</a></code> attribute equals true on any <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and abort these steps.</li>
             <li>Run the <a href="#duration-change-algorithm">duration change algorithm</a> with <var>new duration</var> set to the value being assigned to this attribute.
-	      <div class="note"><div class="note-title" aria-level="3" role="heading" id="h_note_7"><span>Note</span></div><p class=""><code><a href="#widl-SourceBuffer-appendBuffer-void-ArrayBufferView-data">appendBuffer()</a></code>, <code><a href="#widl-SourceBuffer-appendStream-void-Stream-stream-unsigned-long-long-maxSize">appendStream()</a></code> and <code><a href="#widl-MediaSource-endOfStream-void-EndOfStreamError-error">endOfStream()</a></code> can update the duration under certain circumstances.</p></div>
+          <div class="note"><div class="note-title" aria-level="3" role="heading" id="h_note_7"><span>Note</span></div><p class=""><code><a href="#widl-SourceBuffer-appendBuffer-void-ArrayBufferView-data">appendBuffer()</a></code>, <code><a href="#widl-SourceBuffer-appendStream-void-Stream-stream-unsigned-long-long-maxSize">appendStream()</a></code> and <code><a href="#widl-MediaSource-endOfStream-void-EndOfStreamError-error">endOfStream()</a></code> can update the duration under certain circumstances.</p></div>
             </li>
           </ol>
         </dd><dt id="widl-MediaSource-readyState"><code>readyState</code> of type <span class="idlAttrType"><a href="#idl-def-ReadyState" class="idlType"><code>ReadyState</code></a></span>, readonly   </dt><dd>
@@ -924,7 +925,7 @@
             <tr>
               <td><dfn id="dom-evt-sourceclose"><code>sourceclose</code></dfn></td>
               <td><code>Event</code></td>
-	      <td><code><a href="#widl-MediaSource-readyState">readyState</a></code> transitions from <code><a href="#idl-def-ReadyState.open">"open"</a></code> to <code><a href="#idl-def-ReadyState.closed">"closed"</a></code> or <code><a href="#idl-def-ReadyState.ended">"ended"</a></code> to <code><a href="#idl-def-ReadyState.closed">"closed"</a></code>.</td>
+          <td><code><a href="#widl-MediaSource-readyState">readyState</a></code> transitions from <code><a href="#idl-def-ReadyState.open">"open"</a></code> to <code><a href="#idl-def-ReadyState.closed">"closed"</a></code> or <code><a href="#idl-def-ReadyState.ended">"ended"</a></code> to <code><a href="#idl-def-ReadyState.closed">"closed"</a></code>.</td>
             </tr>
           </tbody>
         </table>
@@ -979,19 +980,19 @@
           <ol>
             <li>The media element looks for <a href="#media-segment">media segments</a> containing the <var>new playback position</var> in each <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> object in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>.
               <dl class="switch">
-	        <dt>If one or more of the objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> is missing <a href="#media-segment">media segments</a> for the <var>new playback position</var>
+            <dt>If one or more of the objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> is missing <a href="#media-segment">media segments</a> for the <var>new playback position</var>
                 </dt>
-	        <dd>
-	          <ol>
-	            <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_metadata">HAVE_METADATA</a></code>.</li>
-	            <li>The media element waits until an <code><a href="#widl-SourceBuffer-appendBuffer-void-ArrayBufferView-data">appendBuffer()</a></code> or an <code><a href="#widl-SourceBuffer-appendStream-void-Stream-stream-unsigned-long-long-maxSize">appendStream()</a></code> call causes the <a href="#sourcebuffer-coded-frame-processing">coded frame processing algorithm</a> to set
+            <dd>
+              <ol>
+                <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_metadata">HAVE_METADATA</a></code>.</li>
+                <li>The media element waits until an <code><a href="#widl-SourceBuffer-appendBuffer-void-ArrayBufferView-data">appendBuffer()</a></code> or an <code><a href="#widl-SourceBuffer-appendStream-void-Stream-stream-unsigned-long-long-maxSize">appendStream()</a></code> call causes the <a href="#sourcebuffer-coded-frame-processing">coded frame processing algorithm</a> to set
                       the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to a value greater than <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_metadata">HAVE_METADATA</a></code>.
                       <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_11"><span>Note</span></div><p class="">The web application can use <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> to determine what the media element needs to resume playback.</p></div>
                     </li>
-	          </ol>
-	        </dd>
-	        <dt>Otherwise</dt>
-	        <dd>Continue</dd>
+              </ol>
+            </dd>
+            <dt>Otherwise</dt>
+            <dd>Continue</dd>
               </dl>
             </li>
             <li>The media element resets all decoders and initializes each one with data from the appropriate <a href="#init-segment">initialization segment</a>.</li>
@@ -1022,39 +1023,39 @@
           <dl class="switch">
             <dt>If <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> for all objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> do not contain <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#timeranges">TimeRanges</a></code> for the current playback position:</dt>
             <dd>
-	      <ol>
-	        <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_metadata">HAVE_METADATA</a></code>.</li>
-	        <li>If this is the first transition to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_metadata">HAVE_METADATA</a></code>, then <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-loadedmetadata">loadedmetadata</a></code> at the media element.</li>
-	        <li>Abort these steps.</li>
-	      </ol>
+          <ol>
+            <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_metadata">HAVE_METADATA</a></code>.</li>
+            <li>If this is the first transition to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_metadata">HAVE_METADATA</a></code>, then <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-loadedmetadata">loadedmetadata</a></code> at the media element.</li>
+            <li>Abort these steps.</li>
+          </ol>
             </dd>
             <dt>If <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> for all objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> contain <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#timeranges">TimeRanges</a></code> that include the current playback position and <a href="#enough-data">enough data to ensure uninterrupted playback</a>:</dt>
             <dd>
-	      <ol>
-	        <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_enough_data">HAVE_ENOUGH_DATA</a></code>.</li>
-	        <li>
+          <ol>
+            <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_enough_data">HAVE_ENOUGH_DATA</a></code>.</li>
+            <li>
                   <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-canplaythrough">canplaythrough</a></code> at the media element.</li>
-	        <li>Playback may resume at this point if it was previously suspended by a transition to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>.</li>
-	        <li>Abort these steps.</li>
-	      </ol>
+            <li>Playback may resume at this point if it was previously suspended by a transition to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>.</li>
+            <li>Abort these steps.</li>
+          </ol>
             </dd>
             <dt>If <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> for all objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> contain a <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#timeranges">TimeRange</a></code> that includes the current playback position and some time beyond the current playback position, then run the following steps:</dt>
             <dd>
-	      <ol>
-	        <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_future_data">HAVE_FUTURE_DATA</a></code>.</li>
-	        <li>If the previous value of <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> was less than <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_future_data">HAVE_FUTURE_DATA</a></code>, then <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-canplay">canplay</a></code> at the media element.</li>
-	        <li>Playback may resume at this point if it was previously suspended by a transition to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>.</li>
-	        <li>Abort these steps.</li>
-	      </ol>
+          <ol>
+            <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_future_data">HAVE_FUTURE_DATA</a></code>.</li>
+            <li>If the previous value of <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> was less than <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_future_data">HAVE_FUTURE_DATA</a></code>, then <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-canplay">canplay</a></code> at the media element.</li>
+            <li>Playback may resume at this point if it was previously suspended by a transition to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>.</li>
+            <li>Abort these steps.</li>
+          </ol>
             </dd>
             <dt>If <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> for at least one object in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> contains a <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#timeranges">TimeRange</a></code> that ends at the current playback position and does not have a range covering the time immediately after the current position:</dt>
             <dd>
-	      <ol>
-	        <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>.</li>
-	        <li>If this is the first transition to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>, then <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-loadeddata">loadeddata</a></code> at the media element.</li>
-	        <li>Playback is suspended at this point since the media element doesn't have enough data to advance the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#media-timeline">media timeline</a>.</li>
-	        <li>Abort these steps.</li>
-	      </ol>
+          <ol>
+            <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>.</li>
+            <li>If this is the first transition to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>, then <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-loadeddata">loadeddata</a></code> at the media element.</li>
+            <li>Playback is suspended at this point since the media element doesn't have enough data to advance the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#media-timeline">media timeline</a>.</li>
+            <li>Abort these steps.</li>
+          </ol>
             </dd>
           </dl>
         </section>
@@ -1065,66 +1066,66 @@
           <dl class="switch">
             <dt>If the selected video track changes, then run the following steps:</dt>
             <dd>
-	      <ol>
-	        <li>If the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with the previously selected video track is not associated with any other enabled tracks, run the following steps:
-  	          <ol>
-	            <li>Remove the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> from <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>.</li>
-	            <li>
+          <ol>
+            <li>If the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with the previously selected video track is not associated with any other enabled tracks, run the following steps:
+              <ol>
+                <li>Remove the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> from <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>.</li>
+                <li>
                       <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-removesourcebuffer">removesourcebuffer</a></code> at <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
                     </li>
-	          </ol>
-	        </li>
-	        <li>If the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with the newly selected video track is not already in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>, run the following steps:
-	          <ol>
-	            <li>Add the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> to <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>.</li>
-	            <li>
+              </ol>
+            </li>
+            <li>If the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with the newly selected video track is not already in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>, run the following steps:
+              <ol>
+                <li>Add the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> to <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>.</li>
+                <li>
                       <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-addsourcebuffer">addsourcebuffer</a></code> at <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
                     </li>
-	          </ol>
-	        </li>
-	      </ol>
+              </ol>
+            </li>
+          </ol>
             </dd>
             <dt>If an audio track becomes disabled and the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with this track is not associated with any other enabled or selected track, then run the following steps:</dt>
             <dd>
-	      <ol>
-	        <li>Remove the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with the audio track from <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
+          <ol>
+            <li>Remove the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with the audio track from <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
                 </li>
-	        <li>
+            <li>
                   <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-removesourcebuffer">removesourcebuffer</a></code> at <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
                 </li>
-	      </ol>
+          </ol>
             </dd>
             <dt>If an audio track becomes enabled and the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with this track is not already in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>, then run the following steps:
             </dt>
             <dd>
-	      <ol>
-	        <li>Add the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with the audio track to <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
+          <ol>
+            <li>Add the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with the audio track to <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
                 </li>
-	        <li>
+            <li>
                   <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-addsourcebuffer">addsourcebuffer</a></code> at <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
                 </li>
-	      </ol>
+          </ol>
             </dd>
             <dt>If a text track <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-mode">mode</a> becomes <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-disabled">"disabled"</a> and the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with this track is not associated with any other enabled or selected track, then run the following steps:</dt>
             <dd>
-	      <ol>
-	        <li>Remove the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with the text track from <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
+          <ol>
+            <li>Remove the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with the text track from <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
                 </li>
-	        <li>
+            <li>
                   <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-removesourcebuffer">removesourcebuffer</a></code> at <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
                 </li>
-	      </ol>
+          </ol>
             </dd>
             <dt>If a text track <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-mode">mode</a> becomes <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-showing">"showing"</a> or <a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-texttrack-hidden">"hidden"</a> and the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with this track is not already in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>, then run the following steps:
             </dt>
             <dd>
-	      <ol>
-	        <li>Add the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with the text track to <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
+          <ol>
+            <li>Add the <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> associated with the text track to <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
                 </li>
-	        <li>
+            <li>
                   <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-addsourcebuffer">addsourcebuffer</a></code> at <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>
                 </li>
-	      </ol>
+          </ol>
             </dd>
           </dl>
         </section>
@@ -1159,42 +1160,42 @@
             <li><dl class="switch">
                 <dt>If <var>error</var> is not set</dt>
                 <dd>
-	          <ol>
-	            <li>Run the <a href="#duration-change-algorithm">duration change algorithm</a> with <var>new duration</var> set to the highest end time reported by the <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> attribute across all <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> objects in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>.<br>
-		      <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_15"><span>Note</span></div><p class="">This allows the duration to properly reflect the end of the appended media segments. For example, if the duration was explicitly set to 10 seconds and only media segments for 0 to 5 seconds were appended before endOfStream() was called, then the duration will get updated to 5 seconds.</p></div>
-	            </li>
-	            <li>Notify the media element that it now has all of the media data.</li>
-	          </ol>
-	        </dd>
+              <ol>
+                <li>Run the <a href="#duration-change-algorithm">duration change algorithm</a> with <var>new duration</var> set to the highest end time reported by the <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> attribute across all <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> objects in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code>.<br>
+              <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_15"><span>Note</span></div><p class="">This allows the duration to properly reflect the end of the appended media segments. For example, if the duration was explicitly set to 10 seconds and only media segments for 0 to 5 seconds were appended before endOfStream() was called, then the duration will get updated to 5 seconds.</p></div>
+                </li>
+                <li>Notify the media element that it now has all of the media data.</li>
+              </ol>
+            </dd>
                 <dt>If <var>error</var> is set to <code><a href="#idl-def-EndOfStreamError.network">"network"</a></code>
                 </dt>
                 <dd>
-	          <dl class="switch">
-	            <dt>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute equals <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_nothing">HAVE_NOTHING</a></code>
+              <dl class="switch">
+                <dt>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute equals <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_nothing">HAVE_NOTHING</a></code>
                     </dt>
-	            <dd>Run the <span>"<i>If the media data cannot be fetched at all, due to network errors, causing the user agent to give up trying to fetch the resource</i>"</span> steps of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a>.</dd>
-	            <dt>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute is greater than <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_nothing">HAVE_NOTHING</a></code>
+                <dd>Run the <span>"<i>If the media data cannot be fetched at all, due to network errors, causing the user agent to give up trying to fetch the resource</i>"</span> steps of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a>.</dd>
+                <dt>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute is greater than <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_nothing">HAVE_NOTHING</a></code>
                     </dt>
-	            <dd>Run the "<i>If the connection is interrupted after some media data has been received, causing the user agent to give up trying to fetch the resource</i>" steps of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a>.</dd>
-	          </dl>
-	        </dd>
+                <dd>Run the "<i>If the connection is interrupted after some media data has been received, causing the user agent to give up trying to fetch the resource</i>" steps of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a>.</dd>
+              </dl>
+            </dd>
                 <dt>If <var>error</var> is set to <code><a href="#idl-def-EndOfStreamError.decode">"decode"</a></code>
                 </dt>
                 <dd>
                   <ol>
                     <li>If <code><a href="#widl-SourceBuffer-updating">updating</a></code> equals true, then run the <a href="#sourcebuffer-append-error">append error algorithm</a>.</li>
                     <li>
-	              <dl class="switch">
-	                <dt>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute equals <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_nothing">HAVE_NOTHING</a></code>
+                  <dl class="switch">
+                    <dt>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute equals <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_nothing">HAVE_NOTHING</a></code>
                         </dt>
-	                <dd>Run the "<i>If the media data can be fetched but is found by inspection to be in an unsupported format, or can otherwise not be rendered at all</i>" steps of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a>.</dd>
-	                <dt>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute is greater than <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_nothing">HAVE_NOTHING</a></code>
+                    <dd>Run the "<i>If the media data can be fetched but is found by inspection to be in an unsupported format, or can otherwise not be rendered at all</i>" steps of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a>.</dd>
+                    <dt>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute is greater than <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_nothing">HAVE_NOTHING</a></code>
                         </dt>
-	                <dd>Run the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#fatal-decode-error">media data is corrupted</a> steps of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a>.</dd>
-	              </dl>
+                    <dd>Run the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#fatal-decode-error">media data is corrupted</a> steps of the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-media-load-resource">resource fetch algorithm</a>.</dd>
+                  </dl>
                     </li>
                   </ol>
-	        </dd>
+            </dd>
               </dl>
             </li>
           </ol>
@@ -1294,8 +1295,8 @@
             <li>
               <p>If the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> is in the <code><a href="#idl-def-ReadyState.ended">"ended"</a></code> state then run the following steps:</p>
               <ol>
-	        <li>Set the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> to <code><a href="#idl-def-ReadyState.open">"open"</a></code></li>
-	        <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-sourceopen">sourceopen</a></code> at the <a href="#parent-media-source">parent media source</a>.</li>
+            <li>Set the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> to <code><a href="#idl-def-ReadyState.open">"open"</a></code></li>
+            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-sourceopen">sourceopen</a></code> at the <a href="#parent-media-source">parent media source</a>.</li>
               </ol>
             </li>
             <li>If the <var><a href="#sourcebuffer-append-state">append state</a></var> equals <a href="#sourcebuffer-parsing-media-segment">PARSING_MEDIA_SEGMENT</a>, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> and abort these steps.</li>
@@ -1315,8 +1316,8 @@
             <li>
               <p>If the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> is in the <code><a href="#idl-def-ReadyState.ended">"ended"</a></code> state then run the following steps:</p>
               <ol>
-	        <li>Set the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> to <code><a href="#idl-def-ReadyState.open">"open"</a></code></li>
-	        <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-sourceopen">sourceopen</a></code> at the <a href="#parent-media-source">parent media source</a>.</li>
+            <li>Set the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> to <code><a href="#idl-def-ReadyState.open">"open"</a></code></li>
+            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-sourceopen">sourceopen</a></code> at the <a href="#parent-media-source">parent media source</a>.</li>
               </ol>
             </li>
             <li>If the <var><a href="#sourcebuffer-append-state">append state</a></var> equals <a href="#sourcebuffer-parsing-media-segment">PARSING_MEDIA_SEGMENT</a>, then throw an <code><a href="http://dom.spec.whatwg.org/#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> and abort these steps.</li>
@@ -1395,8 +1396,8 @@
               <p>If the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> is in the <code><a href="#idl-def-ReadyState.ended">"ended"</a></code> state then run
                 the following steps:</p>
               <ol>
-	        <li>Set the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> to <code><a href="#idl-def-ReadyState.open">"open"</a></code></li>
-	        <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-sourceopen">sourceopen</a></code> at the <a href="#parent-media-source">parent media source</a> .</li>
+            <li>Set the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> to <code><a href="#idl-def-ReadyState.open">"open"</a></code></li>
+            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-sourceopen">sourceopen</a></code> at the <a href="#parent-media-source">parent media source</a> .</li>
               </ol>
             </li>
             <li>Set the <code><a href="#widl-SourceBuffer-updating">updating</a></code> attribute to true.</li>
@@ -1483,7 +1484,7 @@
           <p>All SourceBuffer objects have an internal <dfn id="sourcebuffer-append-state">append state</dfn> variable that keeps track of the high-level segment parsing state. It is initially set to <a href="#sourcebuffer-waiting-for-segment">WAITING_FOR_SEGMENT</a> and can transition to the following states as data is appended.</p>
           <table class="old-table">
             <thead>
-	      <tr>
+          <tr>
                 <th>Append state name</th>
                 <th>Description</th>
               </tr>
@@ -1497,8 +1498,8 @@
                 <td><dfn id="sourcebuffer-parsing-init-segment">PARSING_INIT_SEGMENT</dfn></td>
                 <td>Currently parsing an <a href="#init-segment">initialization segment</a>.</td>
               </tr>
-	      <tr>
-	        <td><dfn id="sourcebuffer-parsing-media-segment">PARSING_MEDIA_SEGMENT</dfn></td>
+          <tr>
+            <td><dfn id="sourcebuffer-parsing-media-segment">PARSING_MEDIA_SEGMENT</dfn></td>
                 <td>Currently parsing a <a href="#media-segment">media segment</a>.</td>
               </tr>
             </tbody>
@@ -1537,29 +1538,29 @@
               <a href="#end-of-stream-algorithm">end of stream algorithm</a> with the <var>error</var> parameter set to <code><a href="#idl-def-EndOfStreamError.decode">"decode"</a></code> and abort this algorithm.</li>
             <li>Remove any bytes that the <a href="#byte-stream-format-specs">byte stream format specifications</a> say must be ignored from the start of the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var>.</li>
             <li>
-	      <p>If the <var><a href="#sourcebuffer-append-state">append state</a></var> equals <a href="#sourcebuffer-waiting-for-segment">WAITING_FOR_SEGMENT</a>, then run the following steps:</p>
-	      <ol>
-	        <li>If the beginning of the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> indicates the start of an <a href="#init-segment">initialization segment</a>, set the <var><a href="#sourcebuffer-append-state">append state</a></var> to <a href="#sourcebuffer-parsing-init-segment">PARSING_INIT_SEGMENT</a>.</li>
-	        <li>If the beginning of the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> indicates the start of a <a href="#media-segment">media segment</a>, set <var><a href="#sourcebuffer-append-state">append state</a></var> to <a href="#sourcebuffer-parsing-media-segment">PARSING_MEDIA_SEGMENT</a>.</li>
-	        <li>Jump to the <i>loop top</i> step above.</li>
-	      </ol>
+          <p>If the <var><a href="#sourcebuffer-append-state">append state</a></var> equals <a href="#sourcebuffer-waiting-for-segment">WAITING_FOR_SEGMENT</a>, then run the following steps:</p>
+          <ol>
+            <li>If the beginning of the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> indicates the start of an <a href="#init-segment">initialization segment</a>, set the <var><a href="#sourcebuffer-append-state">append state</a></var> to <a href="#sourcebuffer-parsing-init-segment">PARSING_INIT_SEGMENT</a>.</li>
+            <li>If the beginning of the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> indicates the start of a <a href="#media-segment">media segment</a>, set <var><a href="#sourcebuffer-append-state">append state</a></var> to <a href="#sourcebuffer-parsing-media-segment">PARSING_MEDIA_SEGMENT</a>.</li>
+            <li>Jump to the <i>loop top</i> step above.</li>
+          </ol>
             </li>
             <li>
-	      <p>If the <var><a href="#sourcebuffer-append-state">append state</a></var> equals <a href="#sourcebuffer-parsing-init-segment">PARSING_INIT_SEGMENT</a>, then run the following steps:</p>
-	      <ol>
-	        <li>If the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> does not contain a complete <a href="#init-segment">initialization segment</a> yet, then jump to the <i>need more data</i> step below.</li>
-	        <li>Run the <a href="#sourcebuffer-init-segment-received">initialization segment received algorithm</a>.</li>
-	        <li>Remove the <a href="#init-segment">initialization segment</a> bytes from the beginning of the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var>.</li>
-	        <li>Set <var><a href="#sourcebuffer-append-state">append state</a></var> to <a href="#sourcebuffer-waiting-for-segment">WAITING_FOR_SEGMENT</a>.</li>
-	        <li>Jump to the <i>loop top</i> step above.</li>
-	      </ol>
+          <p>If the <var><a href="#sourcebuffer-append-state">append state</a></var> equals <a href="#sourcebuffer-parsing-init-segment">PARSING_INIT_SEGMENT</a>, then run the following steps:</p>
+          <ol>
+            <li>If the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> does not contain a complete <a href="#init-segment">initialization segment</a> yet, then jump to the <i>need more data</i> step below.</li>
+            <li>Run the <a href="#sourcebuffer-init-segment-received">initialization segment received algorithm</a>.</li>
+            <li>Remove the <a href="#init-segment">initialization segment</a> bytes from the beginning of the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var>.</li>
+            <li>Set <var><a href="#sourcebuffer-append-state">append state</a></var> to <a href="#sourcebuffer-waiting-for-segment">WAITING_FOR_SEGMENT</a>.</li>
+            <li>Jump to the <i>loop top</i> step above.</li>
+          </ol>
             </li>
             <li>
-	      <p>If the <var><a href="#sourcebuffer-append-state">append state</a></var> equals <a href="#sourcebuffer-parsing-media-segment">PARSING_MEDIA_SEGMENT</a>, then run the following steps:</p>
-	      <ol>
+          <p>If the <var><a href="#sourcebuffer-append-state">append state</a></var> equals <a href="#sourcebuffer-parsing-media-segment">PARSING_MEDIA_SEGMENT</a>, then run the following steps:</p>
+          <ol>
                 <li>If the <var><a href="#first-init-segment-flag">first initialization segment flag</a></var> is false, then run the <a href="#end-of-stream-algorithm">end of stream algorithm</a> with the <var>error</var> parameter set to <code><a href="#idl-def-EndOfStreamError.decode">"decode"</a></code> and abort this algorithm.</li>
-	        <li>If the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> does not contain a complete <a href="#media-segment">media segment</a> header yet, then jump to the <i>need more data</i> step below.</li>
-	        <li>If the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> contains one or more complete <a href="#coded-frame">coded frames</a>, then run the
+            <li>If the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> does not contain a complete <a href="#media-segment">media segment</a> header yet, then jump to the <i>need more data</i> step below.</li>
+            <li>If the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> contains one or more complete <a href="#coded-frame">coded frames</a>, then run the
                   <a href="#sourcebuffer-coded-frame-processing">coded frame processing algorithm</a>.
                   <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_17"><span>Note</span></div><p class="">
                     The frequency at which the coded frame processing algorithm is run is implementation-specific. The coded frame processing algorithm may
@@ -1567,12 +1568,12 @@
                     added to the input buffer.
                   </p></div>
                 </li>
-	        <li>If this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> is full and cannot accept more media data, then set the <var><a href="#sourcebuffer-buffer-full-flag">buffer full flag</a></var> to true.</li>
-	        <li>If the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> does not contain a complete <a href="#media-segment">media segment</a>, then jump to the <i>need more data</i> step below.<p></p>
-	        </li><li>Remove the <a href="#media-segment">media segment</a> bytes from the beginning of the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var>.</li>
-	        <li>Set <var><a href="#sourcebuffer-append-state">append state</a></var> to <a href="#sourcebuffer-waiting-for-segment">WAITING_FOR_SEGMENT</a>.</li>
-	        <li>Jump to the <i>loop top</i> step above.</li>
-	      </ol>
+            <li>If this <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> is full and cannot accept more media data, then set the <var><a href="#sourcebuffer-buffer-full-flag">buffer full flag</a></var> to true.</li>
+            <li>If the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var> does not contain a complete <a href="#media-segment">media segment</a>, then jump to the <i>need more data</i> step below.<p></p>
+            </li><li>Remove the <a href="#media-segment">media segment</a> bytes from the beginning of the <var><a href="#sourcebuffer-input-buffer">input buffer</a></var>.</li>
+            <li>Set <var><a href="#sourcebuffer-append-state">append state</a></var> to <a href="#sourcebuffer-waiting-for-segment">WAITING_FOR_SEGMENT</a>.</li>
+            <li>Jump to the <i>loop top</i> step above.</li>
+          </ol>
             </li>
             <li><i>Need more data:</i> Return control to the calling algorithm.</li>
           </ol>
@@ -1614,9 +1615,9 @@
             <li>
               <p>If the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> is in the <code><a href="#idl-def-ReadyState.ended">"ended"</a></code> state then run the following steps:</p>
               <ol>
-	        <li>Set the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> to <code><a href="#idl-def-ReadyState.open">"open"</a></code>
+            <li>Set the <code><a href="#widl-MediaSource-readyState">readyState</a></code> attribute of the <a href="#parent-media-source">parent media source</a> to <code><a href="#idl-def-ReadyState.open">"open"</a></code>
                 </li>
-	        <li>
+            <li>
                   <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="#dom-evt-sourceopen">sourceopen</a></code> at the <a href="#parent-media-source">parent media source</a> .</li>
               </ol>
             </li>
@@ -1686,10 +1687,10 @@
           <ol>
             <li>Update the <code><a href="#widl-MediaSource-duration">duration</a></code> attribute if it currently equals NaN:
               <dl class="switch">
-	        <dt>If the initialization segment contains a duration:</dt>
-	        <dd>Run the <a href="#duration-change-algorithm">duration change algorithm</a> with <var>new duration</var> set to the duration in the initialization segment.</dd>
-	        <dt>Otherwise:</dt>
-	        <dd>Run the <a href="#duration-change-algorithm">duration change algorithm</a> with <var>new duration</var> set to positive Infinity.</dd>
+            <dt>If the initialization segment contains a duration:</dt>
+            <dd>Run the <a href="#duration-change-algorithm">duration change algorithm</a> with <var>new duration</var> set to the duration in the initialization segment.</dd>
+            <dt>Otherwise:</dt>
+            <dd>Run the <a href="#duration-change-algorithm">duration change algorithm</a> with <var>new duration</var> set to positive Infinity.</dd>
               </dl>
             </li>
             <li>If the <a href="#init-segment">initialization segment</a> has no audio, video, or text tracks, then run the <a href="#end-of-stream-algorithm">end of stream algorithm</a> with the <var>error</var> parameter set to <code><a href="#idl-def-EndOfStreamError.decode">"decode"</a></code> and abort these steps.</li>
@@ -1893,7 +1894,7 @@
                   If one or more objects in <code><a href="#widl-MediaSource-sourceBuffers">sourceBuffers</a></code> have <var><a href="#first-init-segment-flag">first initialization segment flag</a></var> set to false, then abort
                   these steps.</li>
                 <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_metadata">HAVE_METADATA</a></code>.</li>
-	        <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named  <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-loadedmetadata">loadedmetadata</a></code> at the media element.</li>
+            <li><a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named  <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-loadedmetadata">loadedmetadata</a></code> at the media element.</li>
               </ol>
             </li>
             <li>
@@ -1935,7 +1936,6 @@
             with <var>byteStreamTrackID</var> and <var>type</var> parameters when invoked by the
             <a href="#sourcebuffer-init-segment-received">initialization segment received algorithm</a>.</p>
           <ol>
-            <ol>
             <li>If <code><a href="#widl-SourceBuffer-trackDefaults">trackDefaults</a></code> contains a <a href="#idl-def-TrackDefault" class="idlType"><code>TrackDefault</code></a> object with a
               <code><a href="#widl-TrackDefault-type">type</a></code> attribute equal to <var>type</var> and a
               <code><a href="#widl-TrackDefault-byteStreamTrackID">byteStreamTrackID</a></code> attribute equal to
@@ -1952,16 +1952,16 @@
 
             <li>Return an array with a single empty string element in it to the caller.</li>
           </ol>
-        </ol></section>
+        </section>
 
         <section id="sourcebuffer-coded-frame-processing" typeof="bibo:Chapter" resource="#sourcebuffer-coded-frame-processing" rel="bibo:Chapter">
           <h4 aria-level="3" role="heading" id="h4_sourcebuffer-coded-frame-processing"><span class="secno">3.5.10 </span>Coded Frame Processing</h4>
           <p>When complete <a href="#coded-frame">coded frames</a> have been parsed by the <a href="#sourcebuffer-segment-parser-loop">segment parser loop</a> then the following steps are run:</p>
           <ol>
             <li>
-	      <p>For each <a href="#coded-frame">coded frame</a> in the <a href="#media-segment">media segment</a> run the following steps:</p>
-	      <ol>
-	        <li><i>Loop Top: </i><dl class="switch">
+          <p>For each <a href="#coded-frame">coded frame</a> in the <a href="#media-segment">media segment</a> run the following steps:</p>
+          <ol>
+            <li><i>Loop Top: </i><dl class="switch">
                     <dt>If <var><a href="#sourcebuffer-generate-timestamps-flag">generate timestamps flag</a></var> equals true:</dt>
                     <dd>
                       <ol>
@@ -1977,7 +1977,7 @@
                             present in the underlying format or may be dependent on the order of the frames. Some metadata text tracks, like MPEG2-TS PSI data, may only have implied timestamps.
                             Format specific rules for these situations should be in the <a href="#byte-stream-format-specs">byte stream format specifications</a> or in separate extension specifications.</p></div>
                         </li>
-	                <li>Let <var>decode timestamp</var> be a double precision floating point representation of the coded frame's decode timestamp in seconds.
+                    <li>Let <var>decode timestamp</var> be a double precision floating point representation of the coded frame's decode timestamp in seconds.
                           <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_22"><span>Note</span></div><p class="">Implementations don't have to internally store timestamps in a double precision floating point representation. This
                             representation is used here because it is the represention for timestamps in the HTML spec. The intention here is to make the
                             behavior clear without adding unnecessary complexity to the algorithm to deal with the fact that adding a timestampOffset may
@@ -1999,13 +1999,13 @@
                     <li>Unset <var><a href="#sourcebuffer-group-start-timestamp">group start timestamp</a></var>.</li>
                   </ol>
                 </li>
-	        <li>
-	          <p>If <code><a href="#widl-SourceBuffer-timestampOffset">timestampOffset</a></code> is not 0, then run the following steps:</p>
-	          <ol>
-	            <li>Add <code><a href="#widl-SourceBuffer-timestampOffset">timestampOffset</a></code> to the <var>presentation timestamp</var>.</li>
-	            <li>Add <code><a href="#widl-SourceBuffer-timestampOffset">timestampOffset</a></code> to the <var>decode timestamp</var>.</li>
-	          </ol>
-	        </li>
+            <li>
+              <p>If <code><a href="#widl-SourceBuffer-timestampOffset">timestampOffset</a></code> is not 0, then run the following steps:</p>
+              <ol>
+                <li>Add <code><a href="#widl-SourceBuffer-timestampOffset">timestampOffset</a></code> to the <var>presentation timestamp</var>.</li>
+                <li>Add <code><a href="#widl-SourceBuffer-timestampOffset">timestampOffset</a></code> to the <var>decode timestamp</var>.</li>
+              </ol>
+            </li>
                 <li>Let <var>track buffer</var> equal the <a href="#track-buffer">track buffer</a> that the coded frame will be added to.</li>
                 <li>
                   <dl class="switch">
@@ -2046,7 +2046,7 @@
                 </li>
                 <li>If <var>frame end timestamp</var> is greater than <code><a href="#widl-SourceBuffer-appendWindowEnd">appendWindowEnd</a></code>, then set the <var><a href="#need-RAP-flag">need random access point flag</a></var> to true, drop the
                   coded frame, and jump to the top of the loop to start processing the next coded frame.
-	        </li><li>If the <var>decode timestamp</var> is less than the <a href="#presentation-start-time">presentation start time</a>,
+            </li><li>If the <var>decode timestamp</var> is less than the <a href="#presentation-start-time">presentation start time</a>,
                   then run the <a href="#end-of-stream-algorithm">end of stream algorithm</a> with the <var>error</var> parameter set to <code><a href="#idl-def-EndOfStreamError.decode">"decode"</a></code>, and abort these steps.</li>
                 <li>If the <var><a href="#need-RAP-flag">need random access point flag</a></var> on <var>track buffer</var> equals true, then run the following steps:
                   <ol>
@@ -2135,30 +2135,30 @@
                   then set <var><a href="#sourcebuffer-group-end-timestamp">group end timestamp</a></var> equal to <var>frame end timestamp</var>.</li>
                 <li>If <var><a href="#sourcebuffer-generate-timestamps-flag">generate timestamps flag</a></var> equals true, then set
                   <code><a href="#widl-SourceBuffer-timestampOffset">timestampOffset</a></code> equal to <var>frame end timestamp</var>.</li>
-	      </ol>
+          </ol>
             </li>
             <li>
               <p>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute is <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_metadata">HAVE_METADATA</a></code> and the new <a href="#coded-frame">coded frames</a> cause all objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> to have media data for the current playback position, then run the following steps:</p>
-	      <ol>
-	        <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>.</li>
-	        <li>If this is the first transition to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>, then <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-loadeddata">loadeddata</a></code> at the media element.</li>
-	      </ol>
+          <ol>
+            <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>.</li>
+            <li>If this is the first transition to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code>, then <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-loadeddata">loadeddata</a></code> at the media element.</li>
+          </ol>
             </li>
             <li>
-	      <p>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute is <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code> and the new <a href="#coded-frame">coded frames</a> cause all objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> to have media data beyond the current playback position, then run the following steps:</p>
-	      <ol>
-	        <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_future_data">HAVE_FUTURE_DATA</a></code>.</li>
-	        <li>
+          <p>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute is <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_current_data">HAVE_CURRENT_DATA</a></code> and the new <a href="#coded-frame">coded frames</a> cause all objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> to have media data beyond the current playback position, then run the following steps:</p>
+          <ol>
+            <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_future_data">HAVE_FUTURE_DATA</a></code>.</li>
+            <li>
                   <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-canplay">canplay</a></code> at the media element.</li>
-	      </ol>
+          </ol>
             </li>
             <li>
-	      <p>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute is <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_future_data">HAVE_FUTURE_DATA</a></code> and the new <a href="#coded-frame">coded frames</a> cause all objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> to have <a href="#enough-data">enough data to ensure uninterrupted playback</a>, then run the following steps:</p>
-	      <ol>
-	        <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_enough_data">HAVE_ENOUGH_DATA</a></code>.</li>
-	        <li>
+          <p>If the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute is <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_future_data">HAVE_FUTURE_DATA</a></code> and the new <a href="#coded-frame">coded frames</a> cause all objects in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code> to have <a href="#enough-data">enough data to ensure uninterrupted playback</a>, then run the following steps:</p>
+          <ol>
+            <li>Set the <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-readystate">HTMLMediaElement.readyState</a></code> attribute to <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#dom-media-have_enough_data">HAVE_ENOUGH_DATA</a></code>.</li>
+            <li>
                   <a href="http://www.w3.org/TR/html5/webappapis.html#queue-a-task">Queue a task</a> to <a href="http://www.w3.org/TR/html5/webappapis.html#fire-a-simple-event">fire a simple event</a> named <code><a href="http://www.w3.org/TR/html5/embedded-content-0.html#event-media-canplaythrough">canplaythrough</a></code> at the media element.</li>
-	      </ol>
+          </ol>
             </li>
             <li>If the <a href="#media-segment">media segment</a> contains data beyond the current <code><a href="#widl-MediaSource-duration">duration</a></code>, then run the <a href="#duration-change-algorithm">duration change algorithm</a> with <var>new duration</var> set to the maximum of the current duration and the <var><a href="#sourcebuffer-group-end-timestamp">group end timestamp</a></var>.</li>
           </ol>
@@ -2172,14 +2172,14 @@
             <li>Let <var>end</var> be the end <a href="#presentation-timestamp">presentation timestamp</a> for the removal range. </li>
             <li><p>For each <a href="#track-buffer">track buffer</a> in this source buffer, run the following steps:</p>
               <ol>
-	        <li>Let <var>remove end timestamp</var> be the current value of <code><a href="#widl-MediaSource-duration">duration</a></code></li>
+            <li>Let <var>remove end timestamp</var> be the current value of <code><a href="#widl-MediaSource-duration">duration</a></code></li>
                 <li>
                   <p>If this <a href="#track-buffer">track buffer</a> has a <a href="#random-access-point">random access point</a> timestamp that is greater than or equal to
                     <var>end</var>, then update <var>remove end timestamp</var> to that random access point timestamp.</p>
-	          <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_28"><span>Note</span></div><p class="">Random access point timestamps can be different across tracks because the dependencies between <a href="#coded-frame">coded frames</a> within a
+              <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_28"><span>Note</span></div><p class="">Random access point timestamps can be different across tracks because the dependencies between <a href="#coded-frame">coded frames</a> within a
                     track are usually different than the dependencies in another track.</p></div>
                 </li>
-	        <li>Remove all media data, from this <a href="#track-buffer">track buffer</a>, that contain starting timestamps greater than or equal to
+            <li>Remove all media data, from this <a href="#track-buffer">track buffer</a>, that contain starting timestamps greater than or equal to
                   <var>start</var> and less than the <var>remove end timestamp</var>.</li>
                 <li>
                   <p>If this object is in <code><a href="#widl-MediaSource-activeSourceBuffers">activeSourceBuffers</a></code>, the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#current-playback-position">current playback position</a> is greater than or equal to
@@ -2188,7 +2188,7 @@
                   <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_29"><span>Note</span></div><p class="">This transition occurs because media data for the current position has been removed. Playback cannot progress until media for the
                     <a href="http://www.w3.org/TR/html5/embedded-content-0.html#current-playback-position">current playback position</a> is appended or the <a href="#active-source-buffer-changes">selected/enabled tracks change</a>.</p></div>
                 </li>
-	      </ol>
+          </ol>
             </li>
             <li>If <var><a href="#sourcebuffer-buffer-full-flag">buffer full flag</a></var> equals true and this object is ready to accept more bytes, then set
               the <var><a href="#sourcebuffer-buffer-full-flag">buffer full flag</a></var> to false.</li>
@@ -2667,7 +2667,7 @@
               <div class="note"><div class="note-title" aria-level="2" role="heading" id="h_note_42"><span>Note</span></div><p class="">For example, if the first <a href="#init-segment">initialization segment</a> has 2 audio tracks and 1 video track, then all <a href="#init-segment">initialization segments</a> that follow it in the byte stream must describe 2 audio tracks and 1 video track.</p></div>
             </li>
             <li><a href="#track-id">Track IDs</a> are not the same across <a href="#init-segment">initialization segments</a>, for segments describing multiple tracks of a single type. (e.g. 2 audio tracks).</li>
-	    <li>
+        <li>
               <p>Codecs changes across <a href="#init-segment">initialization segments</a>.</p>
               <div class="note"><div class="note-title" aria-level="2" role="heading" id="h_note_43"><span>Note</span></div><p class="">For example, a byte stream that starts with an <a href="#init-segment">initialization segment</a> that specifies a single AAC track and later contains an <a href="#init-segment">initialization segment</a> that specifies a single AMR-WB track is not allowed. Support for multiple codecs is handled with multiple <a href="#idl-def-SourceBuffer" class="idlType"><code>SourceBuffer</code></a> objects.</p></div>
             </li>
@@ -2676,11 +2676,11 @@
         <li>The user agent must support the following:
           <ol>
             <li><a href="#track-id">Track IDs</a> changing across <a href="#init-segment">initialization segments</a> if the segments describes only one track of each type.</li>
-	    <li>
+        <li>
               <p>Video frame size changes. The user agent must support seamless playback.</p>
               <div class="note"><div class="note-title" aria-level="2" role="heading" id="h_note_44"><span>Note</span></div><p class="">This will cause the &lt;video&gt; display region to change size if the web application does not use CSS or HTML attributes (width/height) to constrain the element size.</p></div>
             </li>
-	    <li>
+        <li>
               <p>Audio channel count changes. The user agent may support this seamlessly and could trigger downmixing.</p>
               <div class="note"><div class="note-title" aria-level="2" role="heading" id="h_note_45"><span>Note</span></div><p class="">This is a quality of implementation issue because changing the channel count may require reinitializing the audio device, resamplers, and channel mixers which tends to be audible.</p></div>
             </li>
@@ -2690,27 +2690,27 @@
           <ol>
             <li>Map all timestamps to the same <a href="http://www.w3.org/TR/html5/embedded-content-0.html#media-timeline">media timeline</a>.</li>
             <li>Support seamless playback of <a href="#media-segment">media segments</a> having a timestamp gap smaller than the audio frame size. User agent must not reflect these gaps in the <code><a href="#widl-SourceBuffer-buffered">buffered</a></code> attribute.
-	      <div class="note"><div class="note-title" aria-level="2" role="heading" id="h_note_46"><span>Note</span></div><p class="">This is intended to simplify switching between audio streams where the frame boundaries don't always line up across encodings (e.g. Vorbis).</p></div>
+          <div class="note"><div class="note-title" aria-level="2" role="heading" id="h_note_46"><span>Note</span></div><p class="">This is intended to simplify switching between audio streams where the frame boundaries don't always line up across encodings (e.g. Vorbis).</p></div>
             </li>
           </ol>
         </li>
         <li>The user agent must run the <a href="#end-of-stream-algorithm">end of stream algorithm</a> with the <var>error</var> parameter set to <code><a href="#idl-def-EndOfStreamError.decode">"decode"</a></code> when any combination of an <a href="#init-segment">initialization segment</a> and any contiguous sequence of <a href="#media-segment">media segments</a> satisfies the
           following conditions:
-	  <ol>
+      <ol>
             <li>The number and type (audio, video, text, etc.) of all tracks in the <a href="#media-segment">media segments</a> are not identified.</li>
             <li>The decoding capabilities needed to decode each track (i.e. codec and codec parameters) are not provided.</li>
             <li>Encryption parameters necessary to decrypt the content (except the encryption key itself) are not provided for all encrypted tracks.</li>
             <li>All information necessary to decode and render the earliest <a href="#random-access-point">random access point</a> in the sequence of <a href="#media-segment">media segments</a> and all subsequence samples in the sequence
               (in presentation time) are not provided. This includes in particular,
-	      <ul>
-	        <li>Information that determines the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-video-intrinsic-width">intrinsic width and height</a> of the video (specifically, this requires either the picture or pixel aspect ratio, together with the encoded
+          <ul>
+            <li>Information that determines the <a href="http://www.w3.org/TR/html5/embedded-content-0.html#concept-video-intrinsic-width">intrinsic width and height</a> of the video (specifically, this requires either the picture or pixel aspect ratio, together with the encoded
                   resolution).</li>
-	        <li>Information necessary to convert the video decoder output to a format suitable for display</li>
-	      </ul>
-	    </li>
-	    <li>Information necessary to compute the global <a href="#presentation-timestamp">presentation timestamp</a> of every sample in the sequence of <a href="#media-segment">media segments</a> is not provided.</li>
-	  </ol>
-	  <p>For example, if I1 is associated with M1, M2, M3 then the above must hold for all the combinations I1+M1, I1+M2, I1+M1+M2, I1+M2+M3, etc.</p>
+            <li>Information necessary to convert the video decoder output to a format suitable for display</li>
+          </ul>
+        </li>
+        <li>Information necessary to compute the global <a href="#presentation-timestamp">presentation timestamp</a> of every sample in the sequence of <a href="#media-segment">media segments</a> is not provided.</li>
+      </ol>
+      <p>For example, if I1 is associated with M1, M2, M3 then the above must hold for all the combinations I1+M1, I1+M2, I1+M1+M2, I1+M2+M3, etc.</p>
         </li>
       </ul>
       <p>Byte stream specifications must at a minimum define constraints which ensure that the above requirements hold. Additional constraints may be defined, for example to simplify implementation.</p>
@@ -3148,7 +3148,7 @@
             </td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/77975abeec41/media-source/media-source.html">05 February 2013</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/77975abeec41/media-source/media-source.html">05 February 2013</a></td>
             <td>
               <ul>
                 <li>Bug 19676 - Added a note clarifying that the internal timestamp representation doesn't have to be a double.</li>
@@ -3160,7 +3160,7 @@
             </td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/b35722b0cd8f/media-source/media-source.html">31 January 2013</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/b35722b0cd8f/media-source/media-source.html">31 January 2013</a></td>
             <td>
               <ul>
                 <li>Make remove() asynchronous.</li>
@@ -3169,7 +3169,7 @@
             </td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/aae26333e7d1/media-source/media-source.html">30 January 2013</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/aae26333e7d1/media-source/media-source.html">30 January 2013</a></td>
             <td>
               <ul>
                 <li>Remove early abort step on 0-byte appends so the same events fire as a normal append with bytes.</li>
@@ -3179,11 +3179,11 @@
             </td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/fd2a58eec443/media-source/media-source.html">15 January 2013</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/fd2a58eec443/media-source/media-source.html">15 January 2013</a></td>
             <td>Replace setTrackInfo() and getSourceBuffer() with AudioTrack, VideoTrack, and TextTrack extensions.</td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/52a85235137b/media-source/media-source.html">04 January 2013</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/52a85235137b/media-source/media-source.html">04 January 2013</a></td>
             <td>
               <ul>
                 <li>Renamed append() to appendArrayBuffer() and made appending asynchronous.</li>
@@ -3194,13 +3194,13 @@
             </td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/53ea7c19edd2/media-source/media-source.html">14 December 2012</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/53ea7c19edd2/media-source/media-source.html">14 December 2012</a></td>
             <td>
               Pubrules, Link Checker, and Markup Validation fixes.
             </td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/e1c91093dfdc/media-source/media-source.html">13 December 2012</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/e1c91093dfdc/media-source/media-source.html">13 December 2012</a></td>
             <td>
               <ul>
                 <li>Added MPEG-2 Transport Stream section.</li>
@@ -3212,7 +3212,7 @@
             </td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/ee6e8ae9337c/media-source/media-source.html">08 December 2012</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/ee6e8ae9337c/media-source/media-source.html">08 December 2012</a></td>
             <td>
               <ul>
                 <li>Added MediaSource.getSourceBuffer() methods.</li>
@@ -3221,7 +3221,7 @@
             </td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/43be42e69533/media-source/media-source.html">06 December 2012</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/43be42e69533/media-source/media-source.html">06 December 2012</a></td>
             <td>
               <ul>
                 <li>append() now throws a QUOTA_EXCEEDED_ERR when the SourceBuffer is full.</li>
@@ -3233,7 +3233,7 @@
             </td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/0c638da9a67a/media-source/media-source.html">28 November 2012</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/0c638da9a67a/media-source/media-source.html">28 November 2012</a></td>
             <td>
               <ul>
                 <li>Added transition to HAVE_METADATA when current playback position is removed.</li>
@@ -3243,90 +3243,90 @@
               </ul>
             </td>
           </tr>
-	  <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/3e4d27b3a98f/media-source/media-source.html">09 November 2012</a></td>
+      <tr>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/3e4d27b3a98f/media-source/media-source.html">09 November 2012</a></td>
             <td>Converted document to ReSpec.</td>
           </tr>
-	  <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/e029f71aafca/media-source/media-source.html">18 October 2012</a></td>
+      <tr>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/e029f71aafca/media-source/media-source.html">18 October 2012</a></td>
             <td>Refactored SourceBuffer.append() &amp; added SourceBuffer.remove().</td>
           </tr>
-	  <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/6d127e69c9f8/media-source/media-source.html">8 October 2012</a></td>
+      <tr>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/6d127e69c9f8/media-source/media-source.html">8 October 2012</a></td>
             <td>
-	      <ul>
-	        <li>Defined what HTMLMediaElement.seekable and HTMLMediaElement.buffered should return.</li>
-	        <li>Updated seeking algorithm to run inside Step 10 of the HTMLMediaElement seeking algorithm.</li>
-	        <li>Removed transition from "ended" to "open" in the seeking algorithm.</li>
-	        <li>Clarified all the event targets.</li>
-	      </ul>
-	    </td>
+          <ul>
+            <li>Defined what HTMLMediaElement.seekable and HTMLMediaElement.buffered should return.</li>
+            <li>Updated seeking algorithm to run inside Step 10 of the HTMLMediaElement seeking algorithm.</li>
+            <li>Removed transition from "ended" to "open" in the seeking algorithm.</li>
+            <li>Clarified all the event targets.</li>
+          </ul>
+        </td>
           </tr>
-	  <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/7bab66368f2c/media-source/media-source.html">1 October 2012</a></td>
+      <tr>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/7bab66368f2c/media-source/media-source.html">1 October 2012</a></td>
             <td>Fixed various addsourcebuffer &amp; removesourcebuffer bugs and allow append() in ended state.</td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/349559debcc3/media-source/media-source.html">13 September 2012</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/349559debcc3/media-source/media-source.html">13 September 2012</a></td>
             <td>Updated endOfStream() behavior to change based on the value of HTMLMediaElement.readyState.</td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/ca093bbbbefb/media-source/media-source.html">24 August 2012</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/ca093bbbbefb/media-source/media-source.html">24 August 2012</a></td>
             <td>
-	      <ul>
-	        <li>Added early abort on to duration change algorithm.</li>
-	        <li>Added createObjectURL() IDL &amp; algorithm.</li>
+          <ul>
+            <li>Added early abort on to duration change algorithm.</li>
+            <li>Added createObjectURL() IDL &amp; algorithm.</li>
                 <li>Added Track ID &amp; Track description definitions.</li>
                 <li>Rewrote start overlap for audio frames text.</li>
                 <li>Removed rendering silence requirement from section 2.5.</li>
-	      </ul>
-	    </td>
+          </ul>
+        </td>
           </tr>
-	  <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/340786fcae83/media-source/media-source.html">22 August 2012</a></td>
+      <tr>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/340786fcae83/media-source/media-source.html">22 August 2012</a></td>
             <td>
-	      <ul>
-	        <li>Clarified WebM byte stream requirements.</li>
-	        <li>Clarified SourceBuffer.buffered return value.</li>
-	        <li>Clarified addsourcebuffer &amp; removesourcebuffer event targets.</li>
-	        <li>Clarified when media source attaches to the HTMLMediaElement.</li>
-	        <li>Introduced duration change algorithm and update relevant algorithms to use it.</li>
-	      </ul>
-	    </td>
+          <ul>
+            <li>Clarified WebM byte stream requirements.</li>
+            <li>Clarified SourceBuffer.buffered return value.</li>
+            <li>Clarified addsourcebuffer &amp; removesourcebuffer event targets.</li>
+            <li>Clarified when media source attaches to the HTMLMediaElement.</li>
+            <li>Introduced duration change algorithm and update relevant algorithms to use it.</li>
+          </ul>
+        </td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/032f7b8681d1/media-source/media-source.html">17 August 2012</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/032f7b8681d1/media-source/media-source.html">17 August 2012</a></td>
             <td>Minor editorial fixes.</td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/29687c019735/media-source/media-source.html">09 August 2012</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/29687c019735/media-source/media-source.html">09 August 2012</a></td>
             <td>Change presentation start time to always be 0 instead of using format specific rules about the first media segment appended.</td>
           </tr>
-	  <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/087ea42f59c8/media-source/media-source.html">30 July 2012</a></td>
+      <tr>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/087ea42f59c8/media-source/media-source.html">30 July 2012</a></td>
             <td>Added SourceBuffer.timestampOffset and MediaSource.duration.</td>
           </tr>
           <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/ab36e8e882c6/media-source/media-source.html">17 July 2012</a></td>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/ab36e8e882c6/media-source/media-source.html">17 July 2012</a></td>
             <td>Replaced SourceBufferList.remove() with MediaSource.removeSourceBuffer().</td>
           </tr>
-	  <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/b499a199e427/media-source/media-source.html">02 July 2012</a></td>
+      <tr>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/b499a199e427/media-source/media-source.html">02 July 2012</a></td>
             <td>Converted to the object-oriented API</td>
           </tr>
-	  <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/9bbfe09653e4/media-source/media-source.html">26 June 2012</a></td>
+      <tr>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/9bbfe09653e4/media-source/media-source.html">26 June 2012</a></td>
             <td>Converted to Editor's draft.</td>
           </tr>
-	  <tr>
-	    <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/e433598d22a7/media-source/media-source.html">0.5</a></td>
+      <tr>
+        <td><a href="https://dvcs.w3.org/hg/html-media/raw-file/e433598d22a7/media-source/media-source.html">0.5</a></td>
             <td>Minor updates before proposing to <abbr title="World Wide Web Consortium">W3C</abbr> HTML-WG.</td>
           </tr>
           <tr>
             <td><a href="http://html5-mediasource-api.googlecode.com/svn/tags/0.4/draft-spec/mediasource-draft-spec.html">0.4</a></td>
             <td>Major revision. Adding source IDs, defining buffer model, and clarifying byte stream formats.</td>
           </tr>
-	  <tr>
+      <tr>
             <td><a href="http://html5-mediasource-api.googlecode.com/svn/tags/0.3/draft-spec/mediasource-draft-spec.html">0.3</a></td>
             <td>Minor text updates.</td>
           </tr>
html-media

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