[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.
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