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22nd December 2017, 22:49 | #47902 | Link | |
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HOW TO-Kodi 2D-3D-UHD (4k) HDR Guide Internal & External Players W11 Pro 24H2 GTX960-4GB RGB 4:4:4 @Matched Refresh Rates 8,10,12bit KODI 22 MPC-HC/BE 82" Q90R Denon S720W |
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23rd December 2017, 01:07 | #47903 | Link | |
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I hope we'll be able to decode sometime in the future for better HDR. |
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23rd December 2017, 05:35 | #47904 | Link |
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Well I tried my hand at down scaling uhd to 1080p today. It did not go as planned. I'm not sure what settings I need to use in order to make it work smoothly with my 6 gb 1060. I think I had chroma set to ngu aa low. I tried setting HDR to SDR conversion. I did not try messing with dithering so maybe I'll try that next. My rendering times were in the mid-40s and I was dropping frames quite a bit. The quality was quite exceptional so if I can get it stable that will be a really nice thing. My ancient 3770 is probably getting a little tired LOL.
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23rd December 2017, 05:47 | #47906 | Link |
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No that's set fine. I'll have to mess with it some more and see what I can come up with.
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23rd December 2017, 09:33 | #47908 | Link |
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When I am watching 1080p MKV movies, what the best mode should my TV be ?
YCbCr 4:4:4 8 bit YCbCr 4:4:4 10 bit YCbCr 4:4:4 12 bit RGB 8 bit RGB 10 bit RGB 12 bit for 1080p I'm using the resolution changer in MadVR so it will change to 1920x1080p when it detect 1080p movie. in this resolution it changes from 3840x2160 8 bit RGB to 1920x1080 12 bit RGB. Because windows automatically detect RGB 12 bit for no reason I can imagine by NVidia Default Color setting. As for as it go for HDR mode the best is YCbCr 4:2:2 for 12 bit obvious reasons I think I need to change it also for 1080p Movies and not only for HDR Movies and Games. Last edited by x7007; 23rd December 2017 at 09:55. |
23rd December 2017, 09:50 | #47909 | Link |
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full range RGB is the best if your end device support it properly. this counts for HDR too.
10 bit can be better if your Tv properly support it so jsut stick to RGB and get to 10 bit if possible. send 12 bit doesn't give you any with the current madVR version madVR it self is limited to 10 bit output to the GPU driver. |
23rd December 2017, 09:57 | #47910 | Link |
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I use:
SDR: RGB 8 bit HDR: RGB 12 bit (my drivers do not offer a 10 bit option) RGB is ideal for madVR. Technically the GPU using RGB 10 or 12 bit with madVR set to 10 bit is the highest quality mode with madVR. For the few HDR demos that are over 30 fps I used RGB 8 bit (due to the limits of HDMI 2.0) but it required tricking the drivers to get HDR on with 8 bit output.
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madVR options explained |
23rd December 2017, 09:57 | #47911 | Link | ||
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For HDR NVidia decide something wrong as I tested the last time, that's what I am trying to understand if it's the same for SDR because I'm also changing resolution and it's not 4K . it's like totally big mess. because they are 2 different things and they both doesn't work out of the box. Quote:
When I'm using my TV in 4K 3840x2160 it uses 8 bit RGB. When I watch 1080p using 1920x1080 resolution it changes to 1080p 12 bit RGB. When I watch HDR it is 4K 3840x2160 10 bit RGB Which the last time we checked caused issue. ( White pixels on black screen ) which was fixed when changing in NVidia specific to YCbCr 4:2:2 10 bit. So what you saying is it's ok to use RGB for SDR so it seems ok whichever bit it wants to use , MadVR uses 10 bit anyway, so again it won't hurt in that matter so we are fine Last edited by x7007; 23rd December 2017 at 10:03. |
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23rd December 2017, 10:51 | #47915 | Link |
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I think what huhn wants to say is "Nvidia HDR is broken with current driver, 390.x (future version) is supposed to fix that issue."
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Monochrome Anomaly Last edited by Wolfberry; 23rd December 2017 at 15:35. |
23rd December 2017, 13:02 | #47918 | Link |
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If you're downscaling to 50% or less you could try enabling the "scale chroma separately, if it saves performance" option in the "trade quality for performance" tab. That will make it just use the chroma data as-is and only downscale the luma channels (instead of first upscaling chroma, then downscaling everything together). The result might be slightly worse overall but I doubt it will make much difference, and it should be much faster.
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Test patterns: Grayscale yuv444p16le perceptually spaced gradient v2.1 (8-bit version), Multicolor yuv444p16le perceptually spaced gradient v2.1 (8-bit version) |
23rd December 2017, 15:12 | #47919 | Link | |
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Sent from my Pixel XL using Tapatalk
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23rd December 2017, 15:30 | #47920 | Link |
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@SamuriHL With my 1050 Ti @ 1920x1080, I use Lanczos 4-tap for 24-30 fps UHD, and Bicubic 150 for 50/60 fps.
I concur with Ver Greeneyes: enable "scale chroma separately", you'll gain much more by being able to use a higher quality luma downscaling than by upscaling then downscaling chroma.
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Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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