Quote:
Originally Posted by e-t172
A Blu-ray player will typically output YCbCr (directly from the decoded video stream) over HDMI. The TV does the YCbCr → RGB conversion.
Internally, a PC GPU works in RGB only. A PC will typically output RGB over HDMI. The TV just passes its through (hopefully) untouched.
If you enable YCbCr output in your GPU driver settings, the GPU will output YCbCr over HDMI. But internally, it still works in RGB. So what's going to happen is that the GPU will internally convert RGB to YCbCr, then send it over HDMI, then the TV will convert YCbCr back to RGB. The double conversion is pointless, and is likely to degrade quality (especially if there's chroma subsampling going on, or the PC and the TV disagree about which matrix to use).
Putting it all together, here's what happens when using madVR:
GPU driver configured to output RGB: LAV decoder output (YCbCr) → madVR (converts from YCbCr to RGB) → HDMI output (RGB) → TV (RGB)
GPU driver configured to output YCbCr: LAV decoder output (YCbCr) → madVR (converts from YCbCr to RGB) → HDMI output (converts from RGB to YCbCr) → TV (converts from YCbCr to RGB)
Hopefully you can see now that the second configuration doesn't make a ton of sense!
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Yes! Now it is perfectly clear. Now I understand, the result is always RGB.
last question. When the video is 10 bits, in fullscreen exclusive mode, how does it convert? Rgb 8 bits?