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12th September 2018, 08:41 | #52381 | Link |
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Is this new HDR to SDR conversion feature of madVR also an option if you have a HDR capable display with a fairly low maximum brightness of say around 300 nits? Might this HDR video look better converted to SDR?
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12th September 2018, 08:41 | #52382 | Link |
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the FSE in windows 10 is simulated
10 bit windowed fullscreen was buggy on nvidia cards so madshi blocked it for nvidia cards so he just removed the block because nvidia fixed it. source file bit deep information and range information are in the OSD. |
12th September 2018, 10:28 | #52383 | Link | |
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Quote:
There seems to be many issues with test build 20 and linking it here might cause a lot of issues and confusion. Please can you delete this link (or at least provide a link to the post where Madshi linked to it, so that people know where to comment if they have issues with it)? There is a reason why Madshi is doing this experimental work in a separate thread, and hasn't posted a public build yet. If anyone has any issue with a test build, please post in the appropriate thread in the other forum, not here.
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Win11 Pro x64 b23H2 Ryzen 5950X@4.5Ghz 32Gb@3600 Zotac 3090 24Gb 551.33 madVR/LAV/jRiver/MyMovies/CMC Denon X8500HA>HD Fury VRRoom>TCL 55C805K Last edited by Manni; 12th September 2018 at 10:43. |
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12th September 2018, 10:29 | #52384 | Link |
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You should not need to do this, my ageing 2015 HDR OLED has very low nits and its generally fine with HDR content, stuff looks better than the original SDR blurays, there is only one exception i've found so far, star trek 2009 looks awful to me. its doesnt map very well on my display at all, skin looks bleached out and highlights are none existent at times, its all a bit yellow too. i've also tried using the HDR to SDR convert instead, still looks bad to me, its either just me or a bad conversion.
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12th September 2018, 11:55 | #52385 | Link | |
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Managed to solve the issue. Unchecked the enhancements.Now I can use chroma ngu sharp and lanzcos for downscaling. I also can now use again the mpc of my jvc and I get better sharpness. Would like to use jinc, but it uses a lot of gpu and I get frame drops. Regards! |
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12th September 2018, 15:42 | #52386 | Link | |
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Quote:
It also depends on the quality of the tone mapping provided by your display. At 300 nits, you lose a lot of detail through compression that madVR could restore with its highlight recovery setting. Also, some displays can't tone map all pixels with the correct hue. At least, with madVR you always get the correct hue. The image could also be potentially brighter. It depends on the display. It is definitely worth trying. I would guess madVR would do a better job of tone mapping than a display that dim. Here are a couple of images that show how highlight recovery strength works: highlight recovery strength: none highlight recovery strength: medium This is also an image I made from the latest build that I think looks pretty attractive: 1,000 nits BT.2020 -> 150 nits BT.709 (390 target nits) (highlight recovery strength: medium)
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HOW TO - Set up madVR for Kodi DSPlayer & External Media Players Last edited by Warner306; 12th September 2018 at 16:10. |
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12th September 2018, 21:25 | #52388 | Link |
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Depends on your display. On most, 8-bit 4:4:4 will be better as long as you use RGB Full (not YCbCr).
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12th September 2018, 22:23 | #52390 | Link |
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8-bit YCbCr 4:4:4 is not bad either, it is much better than YCbCr 4:2:2 and only very slightly worse than RGB (RGB cannot be subsampled).
4:2:2 means two out of the three image planes are at half resolution, the way humans perceive color is weird so we don't notice all the information loss but the signal does have a lower spacial resolution. Bluring together the color of every two pixels horizontally so you can get some extra steps between color values is not helpful and preserving the dithering at full resolution is important. The exception is when your display uses 4:2:2 internally, then it often isn't any worse to have the GPU do it first.
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13th September 2018, 01:42 | #52392 | Link |
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To keep the video signal untouched and to avoid unwanted colorspace conversion, I set the LAV Video decoder to output RGB24, madVR range at 0-255 and video driver to full RGB 4:4:4 (as from the F.A.Q.). Works fine for SD and HD 8 Bit videos WITHOUT hardware acceleration (unchecked for SD and HD files).
To watch UHD HEVC 10 Bit videos, I do need hardware acceleration, so I have to uncheck RGB24 8 Bit and output at P010 10 Bit dxva in the LAV video decoder. In this case, does madVR the P010 -> RGB conversion? It's possible to avoid it (I mean, does exist a way to output RGB 10 Bit directly from the LAV filter)?
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Best Regards! Leo! |
13th September 2018, 02:20 | #52393 | Link |
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That is wrong. If you want to avoid unwanted color space conversion do not uncheck any options in LAV. You are forcing LAV to do a color space conversion. The video is not RGB. LAV does not do very high quality conversion to RGB either, since it should only very rarely be used. Leave LAV on defaults or even check every option (assuming you are using madVR). LAV will only do conversions if they are required (or forced by the user), otherwise it will pass the video to madVR completely untouched.
You do not want LAV to covert the P010 to RGB, let madVR do that. madVR is much better at it and this keeps all color space conversions internal to madVR, and in 16 bit. Sorry to nitpick but "RGB 4:4:4" makes no sense and I don't think any driver has a "RGB 4:4:4" option.
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13th September 2018, 02:20 | #52394 | Link | |
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Quote:
Leave LAV colorspace options as default. |
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13th September 2018, 02:21 | #52395 | Link |
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I can't figure out why the 3DLUTs I get from DisplayCAL all result in a very dark picture. Source profile BT.709, destination profile default 2.2 Gamma, so it should be pretty straightforward (no HDR). The picture is easier to see on the profile without VCGT applied, though I heard that option should be checked.
Last edited by Megalith; 13th September 2018 at 02:27. |
13th September 2018, 03:40 | #52396 | Link |
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In an effort to be on topic could you post in Display Calibration?
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14th September 2018, 02:37 | #52397 | Link |
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@ Asmodian & Clammerz
Thank you for the explaination!!! I was totally wrong thinking that the first spacecolor conversion was done by the O.S. when MPC-BE is playing the original YCbCr videos, because with LAV in default mode I got YV12 8 Bit output: instead, YV12 is the codec used to read the YCbCr information. My bad (and ignorance). Asmodian, AMD drivers say RGB 4:4:4 Full RGB pixel format.
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Best Regards! Leo! Last edited by YGPMOLE; 14th September 2018 at 05:36. |
14th September 2018, 17:10 | #52398 | Link |
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Of course they do.
What are you doing AMD?
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direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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