[FFmpeg-user] YUV RGB Video Levels

[Chris]

I have a strange question.

I have a YUV video file which must pass EBU r103. The RGB components must be above 0 and less than 255.

How would I use ffmpeg to correct the levels of the R, G and B components of YUV video?

According to the docs, lutrgb works only on RGB video, not YUV.

I'm not sure this can be accomplished by bringing down the Y level using lutyuv or by reducing saturation.

Thank you.