[FFmpeg-user] speeding up filter complex

[Carl Eugen Hoyos]

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

> > Did you test if the bottleneck is the scale or the overlay
> > filter?
> 
> Yeah, i did, Bottleneck is definitly the overlay.
> When i input pre-scaled files and omit the scaling in the 
> overlay routine, it's only about 10% faster.

What about the speed if you don't overlay but only scale 
the input streams (and decode three of them with -f null)?

Carl Eugen