[FFmpeg-user] Lavfi video generator slow performance

Carl Eugen Hoyos ceffmpeg at gmail.com
Sat Apr 7 14:12:57 EEST 2018

2018-04-06 2:04 GMT+02:00, Elliott Balsley <elliottbalsley at gmail.com>:
> 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

If you add " -f null -" to the above, you can test if the disk
is the bottleneck (see "fps" in the status line).
(The command line is supposed to occupy >= 8 cores)

Why do you need 48 bit output? You do realize that the scaler cannot
"invent" higher precision?

Do not top-post here, Carl Eugen

More information about the ffmpeg-user mailing list