[Mp4-tech] How to fiter out I/P/B frame from a encoded video stream?

[bach noida.interrasystems.com]

Hi Amy,
 I think there is no certain way to know frame lengths, as frame lengths
vary due to a number of conditions. Hence, encoded stream will not
contain anything to identify the end of vop. However, in certain cases
some heuristics can be helpful. But caution must be taken for cases for
erroneous
streams, like a start code is corrupted.
Thanks,
Biswajit
> Hi everyone,
>
> I am currently using Microsoft MPEG-4 Visual Reference Software to do some
> expriment. What i want to do is to "fiter out" I/P/B frame from the
> encoded video stream generated by the MS FGS encoder (so that I can play
> with different type of frame separately). I know I can locate the start of
> a I/B/P frame by using vop_start_code and vop_coding_type. But how can I
> know the frame length so that I know where is the end of frame?
>
> Thanks
> Amy Lu
> amylu cmu.edu
>
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