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9th June 2018, 00:17 | #51241 | Link | |
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That second last post definitely looks like a bug. I'm still at a loss to determine if dumb or complex scientific is more accurate. The complex scientific shot doesn't look that bad, either. It is promising when your HDR display is close to the 1080p Blu-ray, but there is a fair to good chance it is also using dumb gamut mapping. dumb will destaturte more than scientific, but it consistently changes the hue in almost random ways, so it is not very precise or predictable in its correction. Scientific has maintained greater saturation and the warmer colors might have been intended, or it might not. Or, the person grading the 4K master intended dumb gamut mapping to correct when necessary. Doesn't seem likely. It's hard to tell. That is a good example. I would compare dumb mode in madVR to your HDR display and see if you can spot any differences.
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9th June 2018, 00:44 | #51242 | Link |
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Lags with 1080p@30fps
Hi all. Basically I've been using MadVR for years, with very modest settings that have always suited my needs and never caused issues. Now I encountered a video that's 1080p@30fps, and for some reason it's like a slideshow. Almost unmoving in fullscreen and still choppy and laggy in the windowed mode. My TV is also 1080p and supports 30fps, to which it changes automatically via MPC-HC (not sure why, but this option never worked with MadVR for me, so I'm using MPC-HC capabilities for that). My video card is Zotac GeForce GTX 1050ti, the OS is Windows 7 x64. I'm using the conjunction of MPC-HC, LAV Filters, and MadVR. The CUDA mechanism is used. If I select the default MPC-HC renderer, everything is fine, but with MadVR it's just how it is, completely unwatchable. I don't want to disable MadVR solely to be able to watch some select videos, so I'm asking for your help in configuring it properly. Considering that the video resolution matches my screen, it's weird, because MadVR shouldn't neither upscale nor downscale anything in this case, and I don't know why it's causing this video to lag. I'm attaching my settings.bin and the data from MediaInfo about this video. Please take a look. Thanks.
Last edited by COOLak; 9th June 2018 at 00:54. |
9th June 2018, 02:09 | #51243 | Link |
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Small question, my TV is calibrated to Rec709 2.2 which I have set in MadVR.
Sometimes I happen to watch 4k, which is rec2020. Will MadVR adapt to 4k Rec2020 or am I forced to change the tv settings back and forth everytime? |
9th June 2018, 03:25 | #51244 | Link |
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If you have your display set to "this display is already calibrated" at BT.709 + pure power 2.2 then madVR will covert BT.2020 content to be correct on your TV, without changing any settings in your TV.
Note: any colors outside the BT.709 gamut will be clipped, you cannot display all of BT.2020 on a BT.709 display.
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9th June 2018, 03:30 | #51245 | Link | |
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But since it's configuered for BT709 you're saying the colors outside that will be clipped? Is it better to just change the color space to "native" on the TV? Is there any point "calibrating" for Rec2020, since you can't go outside the color space of BT2020, or well no TV can so far, so it's better to just put it to "native"? All in all, getting correct color for HDR and BT2020 seems very confusing... Last edited by XTrojan; 9th June 2018 at 04:01. |
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9th June 2018, 05:51 | #51247 | Link |
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I can create the following Custom Resolution which works better than the default for dropping / repeating frames. The issue is that it seems to only allow RGB 8-Bit colour space and this causes issues on my JVC PJ (Purple push). I need to set YCbCr 4:2:2 @ 10-Bit for correct colour and while I can do this using the STD resolutions, the NVidia control panel only allows RGB 8-Bit when using the Custom Res.
Does anyone know if it is possible to have a Cusom Res for timing with YCbCr 4:2:2 @ 10-Bit ? Thanks Nathan Last edited by jmone; 9th June 2018 at 05:55. |
9th June 2018, 09:09 | #51248 | Link | |
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I have no idea about your OLED. It probably has at least 500 to 600nits, so chosing 100nits for reference white makes sense if it's comfortable to your eyes as you still have some headroom for the highlights. It doesn't make sense with a projector that has 100-120nit peak white as you have no headroom for highlights if you set diffuse white to 100nits (apart from the fact that it would be blinding, at least in my room). The most I would want for dark scenes is 100nits in content = 50nits on my screen, or a brightness factor of 2. But I wouldn't be able to use this for the whole film unless the brightness factor is adjusted dynamically. Apart from the excessive brightness, there wouldn't be enough headroom for highlights in most cases (with titles with content up to and above 4000nits) and you'd lose a lot of detail. Yes 25nits reference white will be too dim for quite a few titles, yet anything above that will be too bright for others. That's why I said 25-50nits (on screen) for diffuse white in HDR. This is also why I use three different custom gamma curves in my JVC and MadVR in passthrough mode with the Vertex selecting the most appropriate calibration according to the HDR metadata, until MadVR can either adjust its conversion to each title or provide a variable to select a different profile according to the HDR metadata (not just Max mastering brightness). We'll get there in the end, but for now Madshi is working on the tone-mapping itself. We've agreed to put dynamic conversion on the back burner for now until the algo is set (and the options simplified). So it will take a little while. With a peak white of 120nits in HDR (normal lamp with 1200 hours on the bulb, I get around 175nits in high lamp), I use a target brightness of 480nits in MadVR, which means a diffuse white of 25. That's way too dim for some titles/scenes (that's one of the issues with MadVR's current implementation with projectors), but it's the best "one-size-fits-all" compromise for the average title, and I'm not blinded with bright titles.
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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; 9th June 2018 at 09:24. |
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9th June 2018, 12:13 | #51249 | Link |
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Is it normal for composition rate to be 60Hz at Exclusive FullScreen mode when the display is at 23.976?
Whenever I switch back to windowed or normal fullscreen composition is 23.976 (normal) Edit: It doesn't matter if it's D3D 9 or 11, whenever FSE is enabled it says composition rate is 60.000 Hz even if the display is at 23.976 and the content as well, should one be worried? Last edited by XTrojan; 9th June 2018 at 12:30. |
9th June 2018, 12:32 | #51254 | Link |
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you usually get huge playback problems and judder.
thsi depends heavy on the windows version and the number of screens. for some setup there are work arounds for some there are none. edit: for win 10 you can try different version of it and make sure you are using the newest driver. in term of desktop composition it is a total disaster that changes with every WDDM version. overlay rendering should be immune to issues from composition rates. BTW win 8 fixed this issue completely but well they broke it for 10 again. Last edited by huhn; 9th June 2018 at 12:34. |
9th June 2018, 12:41 | #51255 | Link | |
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I use latest version (windows 1803) |
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9th June 2018, 12:52 | #51256 | Link |
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If you are in FSE mode, then you would not have any composition rate, since the entire point of FSE is to avoid the compositor.
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9th June 2018, 12:53 | #51257 | Link | ||
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But 3DLUT can cause issues as several people have shared here (and you need software that can generate them), so I think the best would be to calibrate your screen to the standard closest to, but bigger than, its native gamut, so probably DCI-P3 (or BT.2020 if the native gamut goes beyond DCI-P3 but I doubt this is the case) and then choose that as a gamut setting under the "this display is already calibrated" option. madVR will then map all content to DCI-P3 which your screen will be calibrated to so you'll still have correct colours with BT.709 encoded content but less clipping with BT.2020 encoded content. My 2 cents, using Win10 on NVIDIA: whatever the driver version, I always got perfect playback (no glitches) in windowed mode with 1607 and 1703. Since updating to 1709 I sometimes get one or two presentation glitches per movie but I never notice anything when watching so I don't know how exactly they manifest in practice.
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HTPC: Windows 10 22H2, MediaPortal 1, LAV Filters/ReClock/madVR. DVB-C TV, Panasonic GT60, Denon 2310, Core 2 Duo E7400 oc'd, GeForce 1050 Ti 536.40 Last edited by el Filou; 9th June 2018 at 13:01. |
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9th June 2018, 13:08 | #51258 | Link | |
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i personally only saw any issues with dual screen setup which depends heavily on the OS and driver version and my HTPC was not effectted by this ever. |
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9th June 2018, 13:12 | #51259 | Link | |
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HDR calibration seems way too tricky for me. |
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direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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