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[Bug 9452] Handling of additional tracks of a multitrack audio/video resource

From: <bugzilla@jessica.w3.org>
Date: Fri, 10 Sep 2010 11:13:29 +0000
To: public-html-a11y@w3.org
Message-Id: <E1Ou1Xt-0002x6-EO@jessica.w3.org>
http://www.w3.org/Bugs/Public/show_bug.cgi?id=9452





--- Comment #3 from Silvia Pfeiffer <silviapfeiffer1@gmail.com>  2010-09-10 11:13:26 ---
(In reply to comment #1)
> The ability to control multiple internal media tracks (sign language video
> overlays, alternate angles, dubbed audio, etc) seems like something we'd want
> to do in a way consistent with handling of multiple external tracks, much like
> how internal subtitle tracks and external subtitle tracks should use the same
> mechanism so that they can be enabled and disabled and generally manipulated in
> a consistent way.
> 
> However, supporting that seems to me to be a feature we should defer to a later
> version, since otherwise we'll get too far ahead of the browser vendors very
> quickly.
> 
> I discussed this with nessy and she suggested reassigning it to the tf for now,
> while they look at this. Please feel free to reassign this to me for further
> consideration (which would probably take the form of approaching browser
> vendors and getting their take on this).

We can try and come up with a spec proposal in the Accessibility TF. It is a
good idea to think about it in the context of multiple external tracks. The
SMIL <par> element comes to mind, though it is unclear as yet how that can be
fitted with the existing media elements. We will need to discuss.

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