Color correction in midtones only

[ilin]

How to apply color correction to midtones only? Video is YUY2.
Shadows and lights are good color. Midtones are too red.

I can apply any function to any cannel via mt_lut(), thanks to Manao MaskTools2.
But this function applied to all pixels. I can't find filter with luma-chroma relations.

[rfmmars]

How to apply color correction to midtones only? Video is YUY2.
Shadows and lights are good color. Midtones are too red.

I can apply any function to any cannel via mt_lut(), thanks to Manao MaskTools2.
But this function applied to all pixels. I can't find filter with luma-chroma relations.

This is a Vdub Plugin RGBeq 2.2 from Fdump

Richard