[feature request] Support RGB formats

[CartoonFan]

It would be great to have support for RGB pixel formats. Aomenc can already handle them, so this is also related to #2759.

Thanks!

EDIT: It's actually ffmpeg's libaom-av1 that can do that, not aomenc proper.

[CartoonFan]

I didn't notice the blank issue template, so this probably isn't exactly a "bug". Sorry for the mix-up 😅 🙏

[tdaede]

This is already supported - all you need to do is use the "Identity" matrix coefficients.

We should probably add YCoCg-R though now, which is much preferred...

[CartoonFan]

This is already supported - all you need to do is use the "Identity" matrix coefficients.

We should probably add YCoCg-R though now, which is much preferred...

Thanks!