On 7/31/17, Jon bae <jonba...@gmail.com> wrote: > Hello, > is there a way to make simple channel expressions in ffmpeg. > I would need to make something like this: > > input > red/alpha , green/alpha , blue/alpha > output > > I try this with the geq filter, but without success.
What exactly you tried? Perhaps you want premultiply filter? > > Have you an idea, how I can do this? > > Regards > Jonathan > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
