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Accessibility/Video a11y Study08: Difference between revisions
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Accessibility/Video a11y Study08 (view source)
Revision as of 03:03, 6 February 2009
, 6 February 2009→3. Dealing with Out-of-band Time-aligned Text
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A typical media player such as mplayer or vlc plays back the subtitles for a video file by allowing the user to open a subtitle file in parallel to the video. The media player then synchronises the playback of the subtitles and renders them on top of the video file. QuickTime and WindowsMediaPlayer do not have this functionality, but rely on subtitle tracks being delivered inside the audio or video file. | A typical media player such as mplayer or vlc plays back the subtitles for a video file by allowing the user to open a subtitle file in parallel to the video. The media player then synchronises the playback of the subtitles and renders them on top of the video file. QuickTime and WindowsMediaPlayer do not have this functionality, but rely on subtitle tracks being delivered inside the audio or video file. | ||
The ability to dynamically associate a time-aligned text file with an audio or video file at the moment of playback is very powerful. It has allowed the creation of a whole community of subtitling fans, the fansubbers, which provides accessibility to almost all | The ability to dynamically associate a time-aligned text file with an audio or video file at the moment of playback is very powerful. It has allowed the creation of a whole community of subtitling fans, the fansubbers, which provides accessibility to almost all movies and feature films. | ||
To provide such a functionality inside a Web browser, it is necessary to specify out-of-band time-aligned text files with the video. | To provide such a functionality inside a Web browser, it is necessary to specify out-of-band time-aligned text files with the video. | ||
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'''Recommendation 3:''' Develop a detailed specification and experimental implementations of how to handle out-of-band time-aligned text files for the "video" and "audio" elements of HTML5. In the WHATWG group, it was suggested that a first step may be a mapping of typical file formats to HTML (and CSS), which should include at minimum sub, srt, lrc, trs and dfxp. | '''Recommendation 3:''' Develop a detailed specification and experimental implementations of how to handle out-of-band time-aligned text files for the "video" and "audio" elements of HTML5. In the WHATWG group, it was suggested that a first step may be a mapping of typical file formats to HTML (and CSS), which should include at minimum sub, srt, lrc, trs and dfxp. | ||
=== 4. Developing a comprehensive Time-aligned Text Format === | === 4. Developing a comprehensive Time-aligned Text Format === | ||