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Re: Video copy protection

From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
Date: Wed, 10 Feb 2010 15:22:10 +1100
Message-ID: <2c0e02831002092022i78130292w5cde2edb788947f0@mail.gmail.com>
To: David Singer <singer@apple.com>
Cc: Jonas Sicking <jonas@sicking.cc>, "public-html@w3.org WG" <public-html@w3.org>
On Wed, Feb 10, 2010 at 10:59 AM, David Singer <singer@apple.com> wrote:
> On Feb 9, 2010, at 11:57 , Jonas Sicking wrote:
>>> Because that's an open-ended problem,
>> I still don't understand. How is getting the 'no save' meta data
>> different from getting meta data like duration and frame rate?
> pretty well any media subsystem worth using will tell you the width and height, duration, etc. of the media.  Not many have explicit access to this kind of data;  you'd need special-purpose code to grovel around in movie files, mp4 files, avi files, ogg files, mxf files, rtsp SDP descriptions, mpeg-2 transport streams, .... well, you get the idea.

That's what the W3C Media Annotations WG is digging into FAICT. So,
hopefully their reference implementations will help expose such
metadata better.

Received on Wednesday, 10 February 2010 04:23:02 UTC

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