[FFmpeg-user] speeding up filter complex

Bouke (VideoToolShed) bouke at videotoolshed.com
Sun Jun 29 14:58:06 CEST 2014

----- Original Message ----- 
From: "Carl Eugen Hoyos" <cehoyos at ag.or.at>
To: <ffmpeg-user at ffmpeg.org>
Sent: Sunday, June 29, 2014 1:48 PM
Subject: Re: [FFmpeg-user] speeding up filter complex

> 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)?

Eeh, now i'm lost....
How would this get me a quad display? Or, do you mean just to do a 

> Carl Eugen
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