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Re: Tech Discussions on the Multitrack Media (issue-152)

From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
Date: Wed, 2 Mar 2011 10:34:04 +1100
Message-ID: <AANLkTi=cVFEqDw2rpXg4sT-sHLMH0xTc7+B7iHi-oAw6@mail.gmail.com>
To: David Singer <singer@apple.com>
Cc: public-html <public-html@w3.org>
Great to see your proposal formalized.

I actually think we need to start adding examples of how we think the
rendering should work to the wiki page, too. Only when we have a full
picture will it really be possible to compare them well. I might give
that a go over the next week, but if somebody wants to step forward
and edit the wiki page, please do.


On Wed, Mar 2, 2011 at 9:51 AM, David Singer <singer@apple.com> wrote:
> Hi Silvia, friends
> Eric and I have been discussing this, and we've added an 8th option to the Wiki, for your consideration.
> at <http://www.w3.org/WAI/PF/HTML/wiki/Media_Multitrack_Media_API>
> On Feb 9, 2011, at 15:56 , Silvia Pfeiffer wrote:
>> Everyone,
>> Your input on this is requested.
>> Issue-152 is asking for change proposals for a solution for media
>> resources that have more than just one audio and one video track
>> associated with them. The spec addresses this need for text tracks
>> such as captions and subtitles only [1]. But we haven't solved this
>> problem for additional audio and video tracks such as audio
>> descriptions, sign language video, and dubbed audio tracks.
>> In the accessibility task force we have discussed different options
>> over the last months. However, the number of people that provide
>> technical input on issues related to media in the TF is fairly
>> limited, so we have decided to use the available time until a change
>> proposal for issue-152 is due (21st February [2]) to open the
>> discussion to the larger HTML working group with the hope of hearing
>> more opinions.
>> Past accessibility task force discussions [3][4] have exposed a number
>> of possible markup/API solutions.
>> The different approaches are listed at
>> http://www.w3.org/WAI/PF/HTML/wiki/Media_Multitrack_Media_API . This
>> may be an incomplete list, but it's a start. If you have any better
>> ideas, do speak up.
>> Which approach do people favor and why?
>> Cheers,
>> Silvia.
>> [1] http://www.whatwg.org/specs/web-apps/current-work/multipage/video.html#the-track-element
>> [2] http://lists.w3.org/Archives/Public/public-html/2011Jan/0198.html
>> [3] http://lists.w3.org/Archives/Public/public-html-a11y/2010Oct/0520.html
>> [4] http://lists.w3.org/Archives/Public/public-html-a11y/2011Feb/0057.html
> David Singer
> Multimedia and Software Standards, Apple Inc.
Received on Tuesday, 1 March 2011 23:34:57 UTC

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