On 06/26/2012 04:13 AM, Alex Cohn wrote:
On Tue, Jun 26, 2012 at 9:18 AM, Simon Daniels
<[email protected]> wrote:
I don't want to use the ffmpeg command-line to save out the frames
because
for some reason the frame counts are not matching. Ffmpeg.exe saves more
frame jpegs than avcodec_decode_video2 seems to find.See an old thread
http://libav-users.943685.n4.nabble.com/Save-AVFrame-to-jpg-file-td2314979.html
I've been using that code successfully. I've done a git pull recently,
and noticed that the encoders (including mjpegs) are now frame/slice
multithread capable. Does this mean it's possible that the return from
avcodec_encode_video2 is somehow pipelined for mjpeg?
That is, when calling avcodec_decode_video2(), you put in a packet, you
get a frame, but the frame might be related to an earlier packet (either
because of I/P/B/reference frame reordering, or because of a
multithreaded decoder).
Is it possible that when calling avcodec_encode_video2() for mjpeg, you
will receive an encoded packet which is related to an earlier frame
because of the new multithreading infrastructure?
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