[Libav-user] How to get some packet information before decoding

[Mohammed Bey Ahmed Khernache]

Hello,
could someone tell me how to get:
    1- the total number of packets that a video bit-stream contain?
    2- the packet type (I, P, or B)?
Actually, I need to have these information *before to start **decoding* of
packets.

Best regards.
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