Dear Amir,
> Every VCL NAL units start with a byte as header.
> 1-whats the bitstream of this one byte header of VCL NAL unit?
This is the first byte right after the start code prefix. It is described in
section 7.3.1 of ITU-T Rec. H.264.
> We know also every NAL unit start with 3 byte which is named: Start Code
> Prefix.
> 2-Whatd the bitstream of start code prefix?
The SCP is defined in definition 3.146 of the above document. It consists of
the 3-byte sequence 0x000001.
> The Access Unit start with some bytes as Access Unit Delimiter.
> 3-What is the bitstream of Access Unit Delimiter?
The AUD is a non-VCL NALU of type 9. Check table 7-1 for more details.
Regards,
Rob.
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