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[Bug 12544] <video> MEDIA CONTROLLER requires track kind for in-band tracks

From: <bugzilla@jessica.w3.org>
Date: Thu, 29 Sep 2011 22:17:25 +0000
To: public-html-a11y@w3.org
Message-Id: <E1R9Ouz-0008WP-2b@jessica.w3.org>
http://www.w3.org/Bugs/Public/show_bug.cgi?id=12544

--- Comment #16 from Ian 'Hixie' Hickson <ian@hixie.ch> 2011-09-29 22:17:22 UTC ---
(In reply to comment #15)
> 
> Please check section 5.8.5.5. of the MPEG DASH specification, available at
> http://www.3gpp.org/ftp/Inbox/LSs_from_external_bodies/ISO_IEC_JTC1_SG29_WG11/29n12313.zip

Is this the right link? It seems to be a zip file containing a zip file
containing XML files and a schema, along with an HTML file describing the
package and some files in a proprietary format I can't read. Is there an HTML
(or failing that, PDF) version somewhere?


> Put another way, your argument above could equally be given by a container
> designer who says there is no point in marking a stream with some indication
> which could never be passed to the HTML presentation layer.

I don't think that's a real concern. Historically people have had no problem
adding features to their languages and technologies before HTML APIs could
represent them. It seems unlikely that these features, if they are useful at
all, would only be useful in an HTML context.

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