[Mp4-tech] RE: I-frame start code

[Pavan B P]

Hi,
The first 32 bits of a VOP is VOP start code (0x000001B6), the next two
bits indicate VOP coding type. If the value of these bits is "0", then
it is an I-VOP and if it is "1" it is a P-VOP. As such there is no I and
P-VOP start code. 
Regards,
Pavan
------------------------------
Message: 2
Date: Mon, 18 Aug 2023 19:47:15 +0800
From: "Nguyen Vu Thanh" <iscp0255 nus.edu.sg>
Subject: [Mp4-tech] I-frame start code
To: "MPEG4-tech" <mp4-tech lists.mpegif.org>
Message-ID: <3F40BCC3.000001.01700 thematrix>
Content-Type: text/plain; charset="iso-8859-1"
Hi,
Is there anyone know about I-frame and P-frame start code in MPEG ?
I used Microsoft MPEG-4 encoder (microsoft-2.3-001213) to encode a video
into 2 layers and would like to find how to distinguish frames in the
bitstreams.
Thank you,
Vu Thanh
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