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15th October 2018, 12:57 | #53241 | Link | |
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There is only a few things that the decoder mode influences: - CPU-only madVR algorithms (black bar detection, and maybe others?), does not work with DXVA2 Native or D3D11 Native - Deinterlacing, doesn't work with D3D11 Native only. Everything works with Software decoding or DXVA2/D3D11 Copy-Back (because copy-back looks like software decoding to a renderer). And between those last two, DXVA2 Copy-Back is usually preferable because its more efficient, unless you need D3D11 to access a headless GPU.
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LAV Filters - open source ffmpeg based media splitter and decoders |
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15th October 2018, 13:00 | #53243 | Link |
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I see, I'm a one stop shopper myself, minimal setup, I dont like having to change TV preset based on content. I will test it for myself though.
cheers Please move this discussion to here from herein, its blocking MADVR issues. https://forum.doom9.org/showthread.php?t=175769
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LG OLED EF950-YAM RX-V685-RYZEN 3600 - 16GBRAM - WIN10 RX 5700 - https://www.videohelp.com/software/madVR/old-versions |
15th October 2018, 13:01 | #53244 | Link |
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Well that's your choice, but I'm not going to settle for crushed near-black just because I don't want to press a button on the remote ;-) Like I said, I only use it as a HTPC (Kodi DSplayer also), so I never even really see the desktop. Kodi DSplayer is set to 16-235, as is MadVR, GPU to 0-255, TV to 16-235. All levels are correct, no near-black crush.
LGs simply do better when working limited range. Last edited by iSeries; 15th October 2018 at 13:05. |
15th October 2018, 13:08 | #53246 | Link |
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Yes, that's also an option. As is raising the TV brightness one notch. But both those options raises everything, whereas the only difference between limited>full>limited and full>full>full is that first near-black shade which is crushed with the latter. All other shades above that are at equal brightness (measured with meter).
No idea if that would be detrimental to the TVs HDR tonemapping as well. For sure, the advice is to not touch any of the default settings on the TV for HDR as it messes up the tonemapping. Last edited by iSeries; 15th October 2018 at 13:12. |
15th October 2018, 13:25 | #53247 | Link |
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Complete 0-255 chain vs MadVR at 16-235, GPU at 0-255, and TV at low doesn't make a difference on my C8.
Tested in a pitch black room using the linked and other black clipping test pattern. Also it would have really surprised me if it made a difference regarding near-blacks/black crush. |
15th October 2018, 13:34 | #53248 | Link | |
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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 |
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15th October 2018, 13:57 | #53250 | Link |
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The primary GPU is always available through DXVA2-CB as well, thanks to D3D9Ex. Just any secondary fully headless GPUs would not be.
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15th October 2018, 14:22 | #53252 | Link | |
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15th October 2018, 14:38 | #53253 | Link |
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i'll have a look tonight on my ageing EF950 OLED
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LG OLED EF950-YAM RX-V685-RYZEN 3600 - 16GBRAM - WIN10 RX 5700 - https://www.videohelp.com/software/madVR/old-versions |
15th October 2018, 16:42 | #53254 | Link |
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For me I have to set madvr to 16-235, GPU full, and TV low to get the proper levels on my C8. So no, IMO, it has not changed in the 2018 models. Default brightness of 50. I can only claim this to be my experience.
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HTPC: Windows 11, AMD 5900X, RTX 3080, Pioneer Elite VSX-LX303, LG G2 77" OLED Last edited by SamuriHL; 15th October 2018 at 16:49. |
15th October 2018, 17:01 | #53255 | Link | |
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15th October 2018, 18:09 | #53256 | Link | |
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If the target nits is higher than the display's actual brightness, you are only getting a ratio of the original curve. Example: 480 target nits shown at 200 actual nits 480 nits is the lowest value of BT.2390 where the soft knee (where compression begins) is above reference white (100 nits). Lower values will place the soft knee lower and lower and compress at least some of the first 100 nits. The lower the target nits, the more reference white is compressed. Approximate display brightness for reference white for 480 target nits at 200 actual nits: 4.8 ratio of target nits/reference white — 480/100 = 4.8 — at 200 actual display nits — puts an untouched diffuse white at close to 42 nits — 200/4.8 = 42 nits In current test builds, if the content is below 480 nits, clipping is selected for as long as possible. This helps improve the brightness of content that is above the soft knee up to the set target nits, and even above the target nits, by eliminating the compression curve and reducing it as much as possible up to the peak brightness of the source. Approximate brightness of 470 nits actual scene peak at 200 display nits with clipping enabled: 2.4 ratio of target nits/display nits — 480/200 = 2.4 — at 200 actual display nits — puts 470 nits at close to 196 nits — 470/2.4 = 196 nits Clipping is always predictable because it is the ratio of the target nits/display nits. BT.2390 is only predictable up to the soft knee. After the soft knee, the entire range is compressed and will change depending on the brightness of the scene. You would actually lose less brightness by outputting in PQ (HDR Output) to an HDR display because the target nits and display nits should match. The gamma curve mismatch means this scale is not exact, but it is a general guide to actual brightness output.
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HOW TO - Set up madVR for Kodi DSPlayer & External Media Players Last edited by Warner306; 16th October 2018 at 15:48. |
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15th October 2018, 18:48 | #53257 | Link |
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Hi all,
Does someone know if chroma upscaling in madVR works in one or two steps, when presentation resolution is larger than luma plane resolution? For example, I have a H264 video in 1280x720 pixels (4:2:0 color with progressive scan). So, when I play it on a 1080p display, does madVR: 1. First upscales chroma from 640x360 to luma plane resolution (1280x720) using selected chroma upscale algorithm 2. Combines 1280x720 luma with upscaled chroma 3. Upscales the resulting picture to 1080p using selected image upscale algo OR 1. Directly upscales chroma from 640x360 to desired presentation resolution (1080p) using selected chroma upscale algo 2. Upscales luma from 1280x720 to 1080p using selected image upscale algo 3. Combines both images to presentation picture Thanks! |
15th October 2018, 19:51 | #53259 | Link |
Is this for real?
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I am using MPC-HC, and yes of course I have set MadVr as video renderer
With these settings, both black level tests posted here show black crush : - GPU set to Full RGB and 0-255 in Nvidia settings - MadVr set to 0-255 - TV set to : Black level HIGH Gamma 2.2 Brightness 49 OLED light 50 Now the Windows desktop is brighter since I have the TV set to High in Black Level, and as I said the test pattern is very dark. I can't see all the boxes. Edit : Small update here : I have increased my TV brightness to 53, and now I pass the THX Optimizer test image for brightness. Image here : https://ibb.co/dfZPLf Edit 2 :The opening scene in Star Wars the last Jedi when you see the scrolling text over the dark sky with stars, with TV Black level set to Low, the black is perfect black. With Black Level set to High, black is not pitch black anymore. All this confirms my previous testing. So... We can take this discussion in the other tread (https://forum.doom9.org/showthread.php?t=175769&page=6) I can post this there aswell.
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My HTPC : i9 10900K | nVidia RTX 4070 Super | TV : Samsung 75Q9FN QLED Last edited by Betroz; 15th October 2018 at 20:26. |
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direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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