I rebuild ffmpeg and cleared the issues with
WARNING: library configuration mismatch
(there was indeed libav installed because of a dependency..)
After rebuilding the wrapper, the issue is exactly the same.
On 30/10/14 13:48, Peter Rennert wrote:
Hi Moritz,
Thanks for looking into this.
On 30/10/14 13:40, Moritz Barsnick wrote:
On Thu, Oct 30, 2014 at 12:15:34 +0000, Peter Rennert wrote:
except for the last frames. It seems as av_read_frame only reads until
the last key frame and does not go beyond it.
Do you ever see "Unable to decode video picture: %d" from
https://bitbucket.org/groakat/ffvideo/src/b45143f755ac8da1e6ed4f52a11217af1e093d54/ffvideo/ffvideo.pyx?at=default#cl-233
???
No, I never saw that Error being raised.
There's an example in ffmpeg's doc/ directory, named
demuxing_decoding.c, which uses your described av_read_frame() loop,
and succeeds at reading all 1000 frames.
Thanks for that lead. I will follow that up and report the results later.
So the issue is probably somewhere in the python wrapper.
ffmpeg version 2.2.git Copyright (c) 2000-2014 the FFmpeg developers
built on Apr 9 2014 16:32:16 with gcc 4.8 (Ubuntu/Linaro
4.8.1-10ubuntu9)
This is quite a bit too old to gain support on this list. :)
I will rebuild ffmpeg, and see if it persists.
WARNING: library configuration mismatch
and is apparently using libraries from a different build, which is not
a good idea.
The first suggestion would be to build lastest git, and ensure you're
not using "stale" libraries from older installs.
(I don't have enough knowledge to tell you more about how to use libav
properly, I only know the examples. Anyway, there's a separate list for
libav issues: https://ffmpeg.org/mailman/listinfo/libav-user )
To my knowledge I am not using libav. At least when I last checked ;).
Moritz
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