- From: Martin Kliehm <martin.kliehm@namics.com>
- Date: Fri, 03 Dec 2010 12:22:17 +0100
- To: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
- CC: HTML Accessibility Task Force <public-html-a11y@w3.org>
Hi Silvia, On 01.12.2010 05:13, Silvia Pfeiffer wrote: > In fact,<video> also doesn't have @summary or @alt. That's true. At least <video> has a poster image where Everett filed a bug and escalated an issue that an alt-text is missing. But in yesterday's telcon we found that an @alt for a poster image will likely be different from a @label (what I called @summary in my draft). Also it is debatable if a video needs even more accessible fallback content, like a short description or @longdesc. >> -<source> has an implicit @label and @language for closed captions defined >> in the closed format. > > Are you talking about the case where captions are provided inside the > media resource? Note that they are all exposed through a TimedTrack > object and the kind, label and language will be available then as IDL > attributes. Yes. Cool, good to know that! >> -<track> has explicit @label and @language attributes. @label is dynamic >> and can by changed by script. @language can include sgn-X (sign language). > > When you say "sign language", you are implying that<track> will also > be used for external video (and audio) alternative content. This is, > in fact, not the case at this moment, see > http://www.w3.org/Bugs/Public/show_bug.cgi?id=9452 . The current > <track> specification only refers to alternative text tracks. We will > still have to come up with a solution to audio and video alternative > content. OK, though it's good that these use cases are on your radar. Thanks for your reply! Martin
Received on Friday, 3 December 2010 11:22:56 UTC