[Bug 17006] Setting track language & kind when the information is in a manifest

https://www.w3.org/Bugs/Public/show_bug.cgi?id=17006

Bob Lund <b.lund@cablelabs.com> changed:

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                 CC|                            |b.lund@cablelabs.com

--- Comment #1 from Bob Lund <b.lund@cablelabs.com> 2012-05-11 19:54:44 UTC ---
(In reply to comment #0)
> Adaptive streaming specs like MPEG-DASH allow language & kind information to be
> specified in the manifest instead of only in the initialization segments. We'd
> like to be able to reflect this information in AudioTrack, VideoTrack, &
> TextTrack objects. The web application needs a mechanism to associate this
> information with the appropriate tracks.

This also applies if the DASH manifest is processed by UA. In this case, the UA
can be expected to map well-known DASH <role> values to @kind. But DASH also
allows extensions to <role> values. In this case, it would be useful for the
web application to be able to set Video, Audio and Text @kind.

> 
> Proposed solutions:
> 1. Remove the readonly modifier from the kind & language attributes on
> Audio|Video|TextTrack and allow assignment.
> 2. Create a Media Source specific method on HTMLMediaElement like the
> following:
> void sourceSetTrackInfo(in DOMString trackId, in DOMString kind, in DOMString
> language)

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Received on Friday, 11 May 2012 19:54:48 UTC