Well it's just that when encoding I always get psnr return figures of say,
Y=45 U=48 V=50.
So I tried increasing the Chroma-qp-offset to 12.
From memory it only seemed to greatly affect the I frames.
P,B Frames still had larger psnr values for chroma.
I'm in the middle of a large encode ATM, so it will be 2-3 hours before I can confirm.
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