- From: Dave Singer <singer@apple.com>
- Date: Fri, 22 Aug 2008 13:09:25 +0200
At 12:59 +0200 22/08/08, Aaron Leventhal wrote: >Has anyone put any further thought on what to do about captions for Ogg? > >We've started to throw some thoughts together here: >https://wiki.mozilla.org/Accessibility/Captioning_Work_Plan > >We could use some help from individuals who understand the area of >video and captions. The problem of deciding what to do for captions >in <video> or specifically for Ogg does not appear to be simple. I'd >appreciate it if someone could prove us wrong. > >- Aaron I don't have ogg-specific opinions, but here are some ideas. a) burn in the captions, and allow the HTML level to select between sources with and without burned-in captions. This is not ideal, but burned-in captions alas, do occur. b) have a file format with streams that can be enabled/disabled. Streams might be something like 3G timed text, or a more direct translation of e.g. 508, or a more direct stream of e.g. w3C DFXP (Timed text authoring format). c) use a more heavy-weight generic layer such as SVG, MPEG LASeR, or 3G DIMS d) use a SMIL file pointing at the timed text in some text format, in a 'par' with the video -- David Singer Apple/QuickTime
Received on Friday, 22 August 2008 04:09:25 UTC