[Libav-user] ffmpeg threading

[wm4]

On Mon, 27 Oct 2014 16:08:33 +0530
Ierum Shanaya <ierumshanaya85 at gmail.com> wrote:

> Hi,
> 
> I am trying to run ffmpeg video decoding by creating multiple threads. The
> problem i am facing is that only one thread is created, irrespective of
> setting the thread_count to 0 or any no like say 2 , 4 etc.
> 
> I did check the config as below:
> 
> *it doesnt have --enable pthreads things.. Is this the issue??. *
> If so, how to set the --enable pthread again in ffmpeg?? Can someone please
> help me understand.
> 
> I have Ubuntu 12.4 on my system(64 bit)
> 
> *Output:*
> -----------------------------------------------------------------
> 
> ierumshanaya at ubuntu:~/ffmpeg_sources/ffmpeg$ ffmpeg
> ffmpeg version git-2014-01-05-f5f6e59 Copyright (c) 2000-2014 the FFmpeg
> developers
>   built on Jan 22 2014 19:00:25 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
>   *configuration*: --prefix=/home/ierumshanaya/ffmpeg_build/lib/pkgconfig
> --extra-cflags=-I/home/ierumshanaya/ffmpeg_build/include
> --extra-ldflags=-L/home/ierumshanaya/ffmpeg_build/lib
> --bindir=/home/ierumshanaya/bin --extra-libs=-ldl --enable-gpl
> --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libtheora
> --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree
> --enable-x11grab
>   libavutil      52. 60.100 / 52. 60.100
>   libavcodec     55. 47.100 / 55. 47.100
>   libavformat    55. 22.102 / 55. 22.102
>   libavdevice    55.  5.102 / 55.  5.102
>   libavfilter     4.  0.103 /  4.  0.103
>   libswscale      2.  5.101 /  2.  5.101
>   libswresample   0. 17.104 /  0. 17.104
>   libpostproc    52.  3.100 / 52.  3.100
> Hyper fast Audio and Video encoder
> usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options]
> outfile}...
> Thanks,
> Ierum

Are you setting the thread_count before "opening" the decoder?