[FFmpeg-user] ffmpeg MP4/x264 output colours change when input source is different resolution (bug?)

[Michael Koch]

Am 15.09.2022 um 11:53 schrieb Dan:
>> This seems to work with VLC player:
>>
>> ffmpeg -f lavfi -i color=0x19be0f:s=400x576 -colorspace bt709 -crf 0
>> -vcodec libx264 -t 5 -y out1.mp4
>> ffmpeg -f lavfi -i color=0x19be0f:s=400x578 -colorspace bt709 -crf 0
>> -vcodec libx264 -t 5 -y out2.mp4
>
> Unfortunately, doesn't work for me in MPC or Chrome. Can you try a
> height of 720 instead of 578 to see if that fails for you?

Please try this, for me it works with VLC player, the color is exactly 
the same:

ffmpeg -f lavfi -i color=0x19be0f:s=400x576 -colorspace bt709 
-color_primaries bt709 -color_trc bt709 -crf 0 -vcodec libx264 -t 5 -y 
out1.mp4
ffmpeg -f lavfi -i color=0x19be0f:s=400x720 -colorspace bt709 
-color_primaries bt709 -color_trc bt709 -crf 0 -vcodec libx264 -t 5 -y 
out2.mp4