[FFmpeg-user] How to choose pixfmt output for video generator

Carl Eugen Hoyos ceffmpeg at gmail.com
Tue Oct 9 23:47:59 EEST 2018

2018-10-09 22:41 GMT+02:00, Martin Vignali <martin.vignali at gmail.com>:
> Hello,
> I would like to use a generator for testing
> Some generator, seems to have several pix fmt supported, but can't find the
> way to choose one
> For example allyuv seems to support yuv444p, gbrp
> ./ffmpeg -f lavfi -i allyuv=rate=5:duration=1 -pix_fmt yuv444p -f null -
> -loglevel debug
> ==> Output yuv444p
> ./ffmpeg -f lavfi -i allyuv=rate=5:duration=1 -pix_fmt gbrp -f null -
> -loglevel debug
> ==> Following log, seems to output yuv444p then convert to gbrp

$ ffmpeg -f lavfi -i allyuv=rate=5:duration=1,format=gbrp

Carl Eugen

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