[Ffmpeg-devel] How to copy frames from stream?

[yj]

Hi,
I want to copy part of frames from stream,
such as, I'll read one frame from the stream,
and then check if it's my interested one,
if so, write to the new stream.
loop for these step.
the problem is that how to re-calculate the PTS/DTS,
and other related information in the packet?
Thank you and best regards.
sean

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