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I get similar poor results from Shotcut using huffyuv yuv422p but not with mlt_image_format=rgb24Ī question because I don’t know the answer… Shotcut: Using the color generator and the export defaults with other: pix_fmt=yuv422pĪnd ffmpeg -i '/i/testing/r16g180b16-shotcut-yuv422p.mp4' -pix_fmt rgb24 /i/testing/r16g180b16-shotcut-yuv422p.png Shotcut: Using the color generator and the export defaults with other: mlt_image_format=rgb24Īnd ffmpeg -i '/i/testing/r16g180b16-shotcut-yuv444p.mp4' -pix_fmt rgb24 /i/testing/r16g180b16-shotcut-yuv444p.png OK, now we have a combination of things that we can trust. Using ffmpeg -f lavfi -i color=#10B410 -t 0.04 -pix_fmt rgb24 /i/testing/r16g180b16-ffmpeg-rgb24.png I get (15,177,14) !! That’s not good! Let’s try using Shotcut’s PNG as input: Shotcut: Using the color generator and the PNG export preset with mlt_image_format=rgb24, I get

I am using Shotcut 18.10.08 and ffmpeg 4.0.x that comes with it. (You can use another tool such as Gimp, but I did not want to wait for it to load). I plan to use ffmpeg to convert one frame of something to PNG, and open it in paint.exe to use its color picker and edit colors tools to get the resulting RGB values. To assess the color handling, first start with RGB handling input-through-output along with a test process.

I did some testing and found RGB output (mlt_image_format=rgb24 and PNG or HuffYUV with pix_fmt=rgb24) from Shotcut is good but anything using YUV is darkened.