[FFmpeg-user] multithreaded filter line

Paul B Mahol onemda at gmail.com
Fri Sep 13 19:48:19 CEST 2013

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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