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Old 16th December 2020, 14:43   #8063  |  Link
Aleksoid1978
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Join Date: Apr 2008
Location: Russia, Vladivostok
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Quote:
Originally Posted by huhn View Post
sorry i don't know what the xbox screenshoot function does so i can't judge screen shoots for HDR.

but i can do this for you
SDR madVR: https://abload.de/img/madvrmsk9y.jpg
SDR mpcVR: https://abload.de/img/mpcvr7hj57.jpg
so your new HLG bt.2020 to bt.709 doesn't seem to work correctly.

the madVR results is AFAIK correct for a SDR display.
SDR is BT709 (sRGB)

what madVR is doing is simple in theory.
it read the primary and then it compares it to the calibration setting.
if no calibration setting is set it defaults to BT 709 for SDR and BT 2020 for HDR passthrough.

if the primary is not matching with the "calibration setting" it will make it match. so in this case it sees BT 2020 from the file and it applies bt 2020 to bt 709 because of SDR.
your HDR -> SDR tonemapping does this too.

BT709 and sRGB are not 100 % the same but you can skip this topic no one really calibrates to sRGB(to those that do don't feel offended plz there are reasons to do that) but to BT709 they are very similar to.
sorry it's calibration is sadly never easy...

BTW. you could force HLG to SDR tonemapping it's "better" anyway.
HLG SDR with bt 2020 to bt 709 is more of compatibility thing it looks bad but that's how it should looks on a SDR screen...
You need compare with my screenshot, in current version of MPC VR no bt.2020 to bt.709 conversion.
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