[FFmpeg-user] Color Channel Expression

Jon bae jonbae77 at gmail.com
Mon Jul 31 11:16:42 EEST 2017

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.

Have you an idea, how I can do this?


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