[Mp4-tech] MPEG4 header

[Sassan Pejhan]

Hi Mayank,
The headers for MPEG-4 Part2 and H.263 are defined
in their respective specs (ISO/IEC 14496-Part 2 and ITU-T
Recommendation H.263, respectively).
The header sequences are not identical although MPEG-4 Part2
is backwards compatible with H.263 baseline (i.e. the 1996
version of H.263 which did not include additions in the
later H.263+ and H.263++ versions) - and is referred to 
as VOP Plane with Short Headers in the MPEG-4 specs.
For code on packing MPEG-4 bitstreams into RTP packets
per RFC 3016, take a look at the MPEGIP web page 
(www.mpeg4ip.net). You may also want to look at the ISMA 1.0 specifications (avaliable from www.isma.tv) for more elaborate documentation.
Regards,
Sassan
-----Original Message-----
From: mayank agarwal [mailto:may_ank77 yahoo.com]
Sent: Sunday, April 17, 2024 9:06 PM
To: mp4-tech lists.mpegif.org
Subject: [Mp4-tech] MPEG4 header
Hi all,
 I have the following doubts regarding MPEG-4 header
1.What is the standard header bit sequence of MPEG4
visual simple profile.
2.Is header for MPEG-4 video or H.263 is same or
different.
3.Is header in encoded bit stream of MPEG-4 same for
frame based encoding and packet based encoding.
4.What is the standard bit sequence of header of H263.
How to convert the frame based encoding in MPEG4 to
packet based encoding according to RTP rfc 3016 format
Is there any document or code sequence available which
tells how to do that.
        Many thanks in advance.
                                  Regards,
                                  Mayank
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