[Mp4-tech] Parsing the MPEG4 over MPEG-2 ps

[Paul (KnowledgeAck)]

Hello All,
I'm working on a parser for the program stream carrying MPEG4 video ES.
In PS, a VOP is divided into consecutive PESs. 
The goal of the parser is to finding out start offset of the first and end offset of the last PES of a specific VOP (such as I, B and P) in a PS file.
Since a VOP is divided into several PESs,  determining the end of a VOP simply by the start code of next VOP is not feasible. 
A prototype with brute force has been developed, but soon it met performance problem while parsing big files.
Is there any efficient (smart) way to do it ? 
Thank you.
Regards,
Wilson
-------------- next part --------------
An HTML attachment was scrubbed...
URL: /pipermail/mp4-tech/attachments/20040117/f7dad1b7/attachment.html