This section describes the status of this document at the time of its publication. Other documents may supersede this document. A list of current W3C publications and the latest revision of this technical report can be found in the W3C technical reports index at http://www.w3.org/TR/.

This is the Proposed Recommendation of the Timed Text (TTML) &versionOfTT;. W3C publishes a technical report as a Proposed Recommendation to indicate that the document is believed to be stable, and to encourage implementation by the developer community. The W3C membership and other interested parties are invited to review the document and send comments to public-tt@w3.org (with public archive) through 23 March 2010.

This document is based on feedback from implementers. The list of changes made since the previous version is available in . A list of issues is also available.

A test suite is available, along with its coverage report and a implementation report. Note that the test suite and implementations are work in progress and may not reflect all of the changes of this document.

The entrance criteria to the Proposed Recommendation phase require at least two independently developed interoperable implementations of each required and optional feature.

The dynamicFlow feature and the property value reverse oblique text have removed due to lack of implementations.

Publication as a Proposed Recommendation does not imply endorsement by the W3C Membership. This is a draft document and may be updated, replaced or obsoleted by other documents at any time. It is inappropriate to cite this document as other than work in progress.

This document has been produced by the Timed Text (TT) Working Group as part of the W3C Video in the Web Activity, following the procedures set out for the W3C Process. The authors of this document are listed in the header of this document.

This document was produced by a group operating under the 5 February 2004 W3C Patent Policy. W3C maintains a public list of any patent disclosures made in connection with the deliverables of the group; that page also includes instructions for disclosing a patent. An individual who has actual knowledge of a patent which the individual believes contains Essential Claim(s) must disclose the information in accordance with section 6 of the W3C Patent Policy.