[Bug 26718] [InbandTracks] Container information vs. Manifest information

https://www.w3.org/Bugs/Public/show_bug.cgi?id=26718

--- Comment #9 from Jon Piesing (HbbTV) <hbbtvjon@gmail.com> ---
This is nothing about text tracks or Cues - it's about video and audio tracks
primarily.

There are two different cases to address;
1) A track whose content is currently being presented by the UA (e.g. the
currently selected audio track)
2) A track whose content is not currently being presented by the UA (e.g. i)
audio tracks other than the one currently being presented or ii) all audio
tracks when none are yet being presented)

I believe this change reasonably addresses the first case.
However what about the second case?

Suppose a DASH MPD has 5 audio adaptation sets, 3 for different languages and 2
for accessibility and only one of the 5 is being presented.

If the UA is to create an AudioTrack for each of these 5 adaptation sets then
the change made would require it to fetch data for each of the 4 adaptation
sets not being presented. I believe that is wrong.

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Received on Wednesday, 24 September 2014 14:35:51 UTC