[Libav-user] Criteria for h.264 key-frame detection
Carl Eugen Hoyos
cehoyos at ag.or.at
Mon Oct 21 16:21:42 CEST 2013
Robert Krüger <krueger at ...> writes:
> If my debug output is correct, both contain no
> B-slices/frames (I just noticed that) but they
> do contain I-slices/frames. If I am not missing
> something, those I-Frames should be valid random
> access points then.
Do you mean you debugged the sample (with a stream
analyzer) and you know that every I-frame is a
random access point or would you just expect every
I-frame in the sample being a random access point?
Testing the 720p sample, it appears to me that
FFmpeg thinks the first random access point after
the initial IDR frame is the 28th frame, a P-frame.
If FFmpeg is right (and the 27th frame is no random
access point), how should the random access point
> > Even better. Which commit are you talking about?
Iirc, fixed ticket with keyword "h264".
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