[vlc-devel] VLC's performance on SMP system

[Kaarlo Räihä]

xxcv kirjoitti 30.05.2009 kello 12:11:
> Kaarlo Räihä wrote:
> > -lavdopts threads=4, something like that might be needed to pass to
> libavcodec from VLC side also before the multithreaded decoding is
>  used. 
> >   
> The option you type above is for mplayer.
> There isn't an option like this in vlc.
> Divx 7.0 directshow filter H.264 video decoder
> also does a decent job and seems more
> processor efficient then ffdshow.
> 

You have to pass it manually because there isn't option for this in VLC yet. If you look how the loopfilter option is implemented, you should be able to figure out how to pass the threads option to libavcodec. (it might also require some changes to source code)

Divx 7.0 decoder is multithreaded. Same for CoreAVC (it also supports GPU decoding by using CUDA). 

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