[Mp4-tech] MPEG4 header

[mayank agarwal]

Many thanks for your reply.
I don't have aceess to MPEG-4 standard,please tell me
from where can i get that, if i can download from any
site free or if anyone has one please sent me by mail.
In encoded stream for MPEG-4 visual simple profile
i am getting first four values(decimal) 0 0 1 182,i
think that is the header because for succesive frames
it remains constant.
I just want to know whether it is right or wrong,how
can i interpret that header.
                 Thanks,
Regards,
Mayank
--- Sassan Pejhan <SassanP vbrick.com> wrote:
> 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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