[FFmpeg-user] speeding up filter complex

[Carl Eugen Hoyos]

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 
filter?

Carl Eugen