[FFmpeg-user] Grayscale x264 convertion

[Andrew Gora]

Hi,


Would someone advice how to convert video to grayscale?

For example, -pix_fmt gray returns:
Incompatible pixel format 'gray' for codec 'libx264', auto-selecting format 'yuvj420p'

-pix_fmt gray16be returns:
Incompatible pixel format 'gray16be' for codec 'libx264', auto-selecting format 'yuv444p'
x264 [error]: high profile doesn't support 4:4:4


Thanks in advance,
Andrew