[FFmpeg-user] Preserve pix_fmt, regardless of codec?

Nicolas George nicolas.george at normalesup.org
Fri Apr 27 11:11:35 CEST 2012

L'octidi 8 floréal, an CCXX, Carl Eugen Hoyos a écrit :
> Sorry, I honestly believe FFmpeg currently does exactly what 
> you asked.

Unfortunately, not at all.

Currently, ffmpeg selects the best pixel format supported by the encoder. If
-pix_fmt has been supplied, it is used as a reference to define "best"
(especially with regard to alpha), and prints a warning if the result is not
what the user asked.

Peter: can you test this patch series:


and see if it suits your needs?


  Nicolas George
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