I am experimenting with ffmpeg and x264 codec. And I have found some unexpected behaviour.
I am encoding video with parameters CRF 23, high profile and changing preset. Documentation says:
for constant quality encoding, you will simply save bitrate by choosing a slower preset.
And I am using CRF, so it should be this particular quote. So how is possible that I have achieved the smallest file for
medium 256MB fast 261MB faster 235MB veryfast 209MB superfast 324MB
What am I missing? BTW another comparison have similar results.