[Libav-user] bug report: avcodec_decode_video2 & pthreads

Carl Eugen Hoyos cehoyos at ag.or.at
Mon Oct 13 19:02:09 CEST 2014

Ben Mesander <ben at ...> writes:

>   If the underlying ffmpeg library is compiled withe 
> --disable-pthreads the code always works correctly. If 
> that is not the case, sometimes avcodec_decode_video2() 
> returns the number of bytes in the PNG, but does not 
> set the frame complete flag to true.

The decoder (luckily!) supports multi-threading. If you 
don't like it (you just have to call avcodec_decode_video2() 
iirc), just set the thread count to 1 before opening the 

Carl Eugen

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