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Re: [media] Moving forward with captions / subtitles

From: Eric Carlson <eric.carlson@apple.com>
Date: Sun, 14 Feb 2010 23:14:35 -0800
Cc: Silvia Pfeiffer <silviapfeiffer1@gmail.com>, HTML Accessibility Task Force <public-html-a11y@w3.org>
Message-id: <A9818972-E5E4-43FF-8D2D-67952B227AEF@apple.com>
To: Philip Jägenstedt <philipj@opera.com>

On Feb 14, 2010, at 10:35 PM, Philip Jägenstedt wrote:

> <trackgroup role="subtitles">
>  <track src="subtitles.en.srt" lang="en">
>  <track src="subtitles.sv.srt" lang="sv">
>  <track src="subtitles.fr.srt" lang="fr">
>  <track src="subtitles.zh.srt" lang="zh">
> </trackgroup>
> <trackgroup role="captions">
>  <track src="captions.en.srt" lang="en">
>  <track src="captions.sv.srt" lang="sv">
>  <track src="captions.fr.srt" lang="fr">
>  <track src="captions.zh.srt" lang="zh">
> </trackgroup>
> role="" isn't what makes the tracks alternative, it's that they are in the same <trackgroup>. If <trackgroup> isn't used then all tracks are in the same implicit group and are mutually exclusive.
  I see that now, though I think it is much less clear ;-)

  "track" has a well defined meaning in the context of media files, as a source of a particular type of media data. This is really what and it is what you are calling "trackgroup" here.

> (I think my previous suggestion of using <track> as the grouping element and <source> for the individual track was quite confusing.)
  Obviously I disagree ;-)

Received on Monday, 15 February 2010 07:15:09 UTC

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