[FFmpeg-user] speeding up filter complex

Carl Eugen Hoyos cehoyos at ag.or.at
Sun Jun 29 13:08:03 CEST 2014

Bouke (VideoToolShed <bouke <at> videotoolshed.com> writes:

> Trying to make a quad out of 4 input files.
> All works swell, but the rendering is slow, while the 
> process is only taking up 15% CPU.
> (With -threads 12 i'm getting 31 fps. Setting threads 
> to 2 gives almost the same speed, threads set to 1 gives 
> my 28 fps.)

Did you test if the bottleneck is the scale or the overlay 

Carl Eugen

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