[Bug 26929] [InbandTracks] How to expose ISOBMFF Tracks

https://www.w3.org/Bugs/Public/show_bug.cgi?id=26929

--- Comment #5 from Cyril Concolato <cyril.concolato@telecom-paristech.fr> ---
> The section of the sourcing spec referred to in this bug is about
> determining if a track is audio, video or text based on the handler. The
> codec type is not relevant to this determination. When the codec type is
> relevant, e.g. how CEA708 Cues are sourced, identification of audio for the
> visually impaired, the codec type is referenced.
I agree with your approach. The initial text was misleading. I proposed some
text in a PR:
https://github.com/w3c/HTMLSourcingInbandTracks/pull/33

> Agreed about the ExtendedLanguageBox. 
Added to the PR.

> Not sure about the KindBox. It seems
> that specific KindBox values depend on the schemeURI. So the sourcing spec
> needs a specific set of schemeURI's to specify a KindBox value to HTML track
> @kind mapping.
Yes. Don't know if MPEG should be defining them or not. I expect the
schemeIdURI to be http://www.w3.org/TR/HTML for kinds defined by the HTML spec
but that's nowhere specified.

> CEA708 in AVC in MPEG-2 TS is specified. There is no spec for CEA708 in AVC
> in ISOBMFF AFAIK.
You can check
https://developer.apple.com/library/mac/documentation/quicktime/qtff/QTFFChap3/qtff3.html#//apple_ref/doc/uid/TP40000939-CH205-SW87

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Received on Tuesday, 28 October 2014 15:41:14 UTC