Last year I shell out for a nice pair of 2k 27monitors that support HDR, a bit before that GTX 1070ti - at $450 I wasn't cheap, but at current insane prices doesn't seem all that expensive.
Short story, I figured I have a bit of time to play with Windows HDR mode, got it set up nice and pretty color/lightness balance.
Going to Youtube and let's play some real 2k HDR content. The good news it plays, but the bad news is a dog slow.
CPU is peaked at 100% - Hmm, OK I do have an ancient 2500k CPU, but it wasn't a problem before as GPU supposed to decode the video, right?
Is Hardware acceleration enabled? Well yes, it is.
Digging deeper (youtube stats for nerds), I see that Youtube is using their favorite codec VP9 and HDR requires bt2020 colorspace - ie: 10bits.... Do you want to guess what comes next?
If you guessed a lot of headbanging after I saw and confirmed It in two different sources: Only SOME Pascal GPUs can decode VP9 with 10/12 bits, the rest is limited to vp9 with 8bit color (ie: NO HDR)
Notice how GTX 1030/1050/1050ti does support VP9 with 10bit, but 1060/1070/1070ti/1080 doesn't, then 1080 TI and all newer cards do.
WTF nVidia??? and Shame on youtube for not providing alternative streams in H.265 with 10bits which my card DOES support
Short story, I figured I have a bit of time to play with Windows HDR mode, got it set up nice and pretty color/lightness balance.
Going to Youtube and let's play some real 2k HDR content. The good news it plays, but the bad news is a dog slow.
CPU is peaked at 100% - Hmm, OK I do have an ancient 2500k CPU, but it wasn't a problem before as GPU supposed to decode the video, right?
Is Hardware acceleration enabled? Well yes, it is.
Digging deeper (youtube stats for nerds), I see that Youtube is using their favorite codec VP9 and HDR requires bt2020 colorspace - ie: 10bits.... Do you want to guess what comes next?
If you guessed a lot of headbanging after I saw and confirmed It in two different sources: Only SOME Pascal GPUs can decode VP9 with 10/12 bits, the rest is limited to vp9 with 8bit color (ie: NO HDR)
Nvidia NVDEC - Wikipedia
en.wikipedia.org
Notice how GTX 1030/1050/1050ti does support VP9 with 10bit, but 1060/1070/1070ti/1080 doesn't, then 1080 TI and all newer cards do.
WTF nVidia??? and Shame on youtube for not providing alternative streams in H.265 with 10bits which my card DOES support
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