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Re: timing model of the media resource in HTML5

From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
Date: Wed, 3 Feb 2010 08:18:24 +1100
Message-ID: <2c0e02831002021318i490dc0bcw13836153407becf7@mail.gmail.com>
To: Eric Carlson <eric.carlson@apple.com>
Cc: Philip Jägenstedt <philipj@opera.com>, HTML Accessibility Task Force <public-html-a11y@w3.org>, Ken Harrenstien <klh@google.com>
On Wed, Feb 3, 2010 at 2:24 AM, Eric Carlson <eric.carlson@apple.com> wrote:
> On Feb 2, 2010, at 7:18 AM, Eric Carlson wrote:
>> On Feb 1, 2010, at 10:31 PM, Silvia Pfeiffer wrote:
>>> You mentioned there are unique track identifiers in MPEG/QuickTime.
>>> Are those strings or numbers?
>>  It is a 32-bit integer that uniquely identifies the track, see section 8.4 of ISO/IEC 14496-12 for MPEG-4 or http://developer.apple.com/mac/library/documentation/QuickTime/QTFF/QTFFChap2/qtff2.html#//apple_ref/doc/uid/TP40000939-CH204-25550 for QuickTime.
>  Although the unique identifier is an integer in QuickTime and ISO files, this is an implementation detail that we shouldn't be constrained by. Other formats could use an identifier, like a UUID, that is more naturally expressed as a String.

Yes, sure. I was just curious. And getting a good link to the
documentation is really helpful! Thanks!

Received on Tuesday, 2 February 2010 21:19:19 UTC

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