Hello,In the documentation :
39.107 noformat
Force libavfilter not to use any of the specified pixel formats for the input to the next filter.
It accepts the following parameters:
- pix_fmts
-
A ’|’-separated list of pixel format names, such as apix_fmts=yuv420p|monow|rgb24".
In yellow : a pix_fmts=...Isn't it ?
BTW,Marco