Start time	Expected observation
00:00:00:12	A series of text subtitles with varying sizes and fonts begins to appear, with background colors as shown (note that the color values need not exactly match those shown) and character colors as noted: White characters: This is a subtitle with 38 characters. This text subtitle contains 42 characters. Black characters: This subtitle has 75 characters, which are spread across two lines of text. White characters: This subtitle has 77 characters, which are spread across three lines of text. Overall the change in wording and font is seamless and even, without gaps.
00:00:02:22	A new series of five text subtitles with varying sizes and formatting begins to appear, in all black characters: Here we have green subtitle that is fairly short. This is a short subtitle. Another short subtitle. A small-text subtitle that is fairly short. Big text. There is a short gap of time between each new subtitle. Overall the change in wording and format is consistent with what the subtitles indicate.
00:00:04:10	A new series of four subtitles begins to appear in rapid succession: Small text subtitles flash by fast. These subtitles have gaps between them. There should have been a gap between the previous subtitle and this subtitle. Another gap preceded this subtitle. Overall the change in wording is consistent with what the subtitles indicate.
00:00:06:13	A new series of five subtitles begins to appear: This is a large subtitle. using a large font. This subtitle uses a large font and a number of inline styles such as italic and bold. Black characters: This subtitle uses a small font and a lot of inline styles such as italic and bold. White characters: This subtitle makes much use of <span> attribute, and should be difficult to render correctly. Black characters: This subtitle uses a large font, a number of inline styles, and many <span> elements. Overall the change in wording and format is consistent with what the subtitles indicate.
00:00:11:22	A new series of two subtitles begins to appear: Black characters: A simple subtitle in a medium-sized font that uses a number of characters that may show up in a subtitle, such as ‘ ( ) & % ! @ # $ % ^ * _ - + = : ; White characters: A subtitle in a medium-sized font that uses a number of "special" characters such as ‘ ( ) & % ! @ # $ % ^ * _ - + = : ; Overall the change in wording and format is consistent with what the subtitles indicate
00:00:15:07	A new series of two subtitles begins to appear in all black characters: This is a subtitle that has a very large number of characters in order to test text wrapping and general formatting of text. It even has multiple sentences to make it longer, which will help test the rendering of text-based subtitles in more extreme cases. This is another subtitle that has a very large number of characters, primarily so that the previous long subtitle might be displayed long enough that someone could possibly be able to read it. This subtitle also has multiple sentences in order to lengthen it appropriately. The rendering rate for text subtitles is quite high, especially if only using text and not using a number of background colors. Overall the change in wording and format is consistent with what the subtitles indicate.
00:00:20:07	A new series of three subtitles begins to appear in all white characters: This subtitle uses number of different background colors for each layer, including the <div>, <p>, and several <span> elements. This subtitle uses number of different background colors for each layer, including the <div>, <p>, and several <span> elements. In addition to rendering different background colors, this subtitle has a large number of characters. Again, this subtitle uses a number of different background colors for each layer, including the <div>, <p>, and several <span> elements. In addition to rendering different background colors, this subtitle has a large number of characters. Overall the change in wording and format is consistent with what the subtitles indicate.
00:00:28:01	A new series of two subtitles begins to appear: Dark cyan characters outlined in yellow: This is another subtitle that has a very large number of characters in order to test text wrapping and general formatting of text. It even has multiple sentences to make it longer, which will help test the rendering of text-based subtitles in more extreme cases. White characters: This subtitle makes much use of the <span> attribute, and should be difficult to render correctly. Overall the change in wording and format is consistent with what the subtitles indicate.