[Mp4-tech] Picture Header

[Dave Singer]

At 1:49  -0700 1/09/06, The Video Genie wrote:
>You may find over the internet two reference implementations of 
>MPEG4 one is called MOMUSYS and other is from microsoft. You can 
>also get it from mpeg4ip.net guess its in divx or xvid wrapper. The 
>picture is called rectangular vop in mpeg4. The type information is 
>placed in vop header. You need not any documentation to get a 
>concept. You can develop it in a better way by going through 
>reference implemenatations. In divx and Mpeg4 this information is 
>same.
>All the best
>The Video Genie

Software, of course, will help.
But answering the question, the spec you want would not be 14496-1 
(Systems) but 14496-2 (Visual).  If you buy it, the latest integrated 
spec. would be entirely adequate to answer this question.  I believe 
that this is 14496-2:2004, available for 364 swiss francs from 
www.iso.ch.
I am sure that a free resource should exist to answer this level of 
detail of the visual bitstream syntax, however.
>
>From: "Christoph Spranger" <christoph.spranger googlemail.com>
>To: mp4-tech lists.mpegif.org
>Subject: [Mp4-tech] Picture Header
>Date: Thu, 31 Aug 2023 18:00:36 +0200
>
>Dear Sir or Madam,
>
>At the moment Im doing a project over MPEG4 for my university. At the
>moment, i try to find a way to separate the different pictures by I, P and
>B-Pictures. I read somewhere that the information about the type of the
>picture can be found in the picture header. This picture header can probably
>be found somewhere in the MPEG4 Standard 14496.
>
>My problem is, that i dont know exactly, in which part of the standard this
>information could be found, and I cant afford to buy all parts ;-)
>
>I think it has to be part 1 but im not absolutely sure. Perhaps someone can
>give a hint to a "poor student".
>
>regards,
>
>Christoph Spranger
>
>
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-- 
David Singer
Apple Computer/QuickTime