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Re: Video copy protection

From: David Singer <singer@apple.com>
Date: Tue, 9 Feb 2010 15:59:10 -0800
Cc: "public-html@w3.org WG" <public-html@w3.org>
Message-Id: <2331FF10-0C2A-4B99-8276-47913DDC2123@apple.com>
To: Jonas Sicking <jonas@sicking.cc>

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.


David Singer
Multimedia and Software Standards, Apple Inc.
Received on Tuesday, 9 February 2010 23:59:43 UTC

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