[FFmpeg-user] speeding up filter complex

Carl Eugen Hoyos cehoyos at ag.or.at
Sun Jun 29 19:34:27 CEST 2014

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

> > What about the speed if you don't overlay but only scale
> > the input streams (and decode three of them with -f null)?
> Eeh, now i'm lost....
> How would this get me a quad display? 

It would not.

> Or, do you mean just to do a speedtest?

Yes, I expected that scale is slower than overlay 
(but was apparently wrong).
Implementing multi-threading for the scale filter may 
be easier because libswscale already supports slices.

Carl Eugen

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