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

[Martin Vignali]

Le mar. 9 oct. 2018 à 22:48, Carl Eugen Hoyos <ceffmpeg at gmail.com> a écrit :

> 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
>
>
Thanks

Martin