[FFmpeg-user] multithreaded filter line

Mike chronek at interia.eu
Fri Sep 13 20:05:06 CEST 2013

W dniu 2013-09-13 19:48, Paul B Mahol pisze:
> On 9/13/13, Mike <chronek at interia.eu> wrote:
>> Hello,
>>    I want ask if ffmpeg have something like multithreaded filter line
>> (sorry, my english is bad)
>>    I will explain,
>>    Usually if i set threads to 8 , and have something like source ->
>> filters (postprocessor,scale,unsharp,gradfun) -> output i see only one
>> core of cpu is busy , and get like 2 fps on hi-res videos ... So is a
>> way to automaticly split video and use more cores? I know that i can do
>> it manually , but maybe there is build in option for that?
>>    If is not yet ill post wish on bugtracker cause i think it would be
>> helpfull for some cases.
> There is slice threading for filters, you can see what filters have support
> for it in 'ffmpeg -filters output'
> Adding frame multi-threading is certainly welcome, as that would allow
> filters that can't generally use slice threading to benefit of multiple cores.
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Thanks for info. I see that not many filters can use slice threading , 
i'll check buttracker if anyone not post wish like mine before

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