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Re: change proposals for issue-152

From: Mark Watson <watsonm@netflix.com>
Date: Tue, 22 Mar 2011 08:05:19 -0700
To: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
CC: public-html <public-html@w3.org>
Message-ID: <74B4F9C8-0236-4F44-B318-401BEE518F49@netflix.com>
Hi Silvia,

In this proposal, how do I discover and control in-band tracks ?

If I know in advance that a resource has, say, a sign language track, I can create a video element for that track and control its rendering that way. But in general I don't know this in advance: I need to be able to load the metadata for a resource and find out the tracks it contains (then I could create elements for the ones that I want). Or did I miss something ?

A minor comment, but there are uses for the track "kind" which are not related to accessibility, for example directors commentary or multiple video viewpoints (most common with sports content).


On Mar 21, 2011, at 10:34 PM, Silvia Pfeiffer wrote:

> Dear WG chairs,
> Please find a change proposal for issue-152: multitrack media API here:
> http://www.w3.org/WAI/PF/HTML/wiki/Media_Multitrack_Change_Proposal
> Best Regards,
> Silvia.
> This change proposal was created by a sub-group of the W3C Media
> Accessibility Task Force. Many alternatives were looked at during the
> process of creation of this change proposal (see [1]) and indeed not
> all possibilities have been analysed to date. In fact, some of the
> Task Force members are not in agreement with this proposal, which has
> resulted in a second change proposal (see [2]). Further, several
> members of the Task Force think that Ian's proposal (see [3]) is also
> of high quality. It seems we just simply lack further discussion time
> to arrive at a solution that everyone can agree to.
> [1] http://www.w3.org/WAI/PF/HTML/wiki/Media_Multitrack_Media_API
> [2] http://www.w3.org/WAI/PF/HTML/wiki/Media_Multitrack_Change_Proposal_2
> [3] http://lists.w3.org/Archives/Public/public-html/2011Mar/0436.html
Received on Tuesday, 22 March 2011 15:05:55 UTC

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