[FFmpeg-user] Lavfi video generator slow performance

Kieran O Leary kieran.o.leary at gmail.com
Fri Apr 6 03:22:25 EEST 2018


On Fri, 6 Apr 2018, 01:11 Elliott Balsley, <elliottbalsley at gmail.com> wrote:

> Thank you, with that suggestion I do get approximately double the speed.
> But still my CPU usage is very low.  Is there any way to get more
> performance out of this?
> ffmpeg.exe -f lavfi -i color=color=red:s=3840x2160 -t 60 -pix_fmt rgb48le
> -y -s 3840x2160 TIFF\output%4d.tiff

Well CPU could be low cos your disk can't keep up? Each Ultra HD 16 bit RGB
frame will be about 47 megabytes. At 13 FPS,you're pushing over 600
megabytes a second.  Are you expecting your disk to perform faster than



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