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20th January 2019, 20:01 | #54341 | Link |
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This says that native dithering is possible with NVidia Linux drivers and Windows Quadro drivers and now regular GeForce cards, but I can't get it to work or figure out how to test it https://steamcommunity.com/groups/Sp...8172123104780/
Is this how it is supposed to look like in the registry https://drive.google.com/file/d/1uin...w?usp=drivesdk ? |
20th January 2019, 20:13 | #54342 | Link |
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nvidia is using dithering in like forever and it's very easy to test.
the examples are more about the the type of dithering in an ideal situation we don't want the image from madVR to be dithered by the driver. so the only useful situation i can see here is the 6 bit dithering which madVR can already do... |
20th January 2019, 20:34 | #54344 | Link |
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not selecting a GPU results in native mode which is supposed to be faster but you can't use all blackbar detection features and other stuff like deinterlancing.
selecting a GPU is better for compatibility but DXVA copyback does the same and DXVA copyback was faster than D3D11 copyback if i remember correctly but not that it matters. |
20th January 2019, 21:19 | #54345 | Link |
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but the non-selection of the GPU in the lav is for 4k hdr files or for everything? me with 1080p material I feel very comfortable with DVXA copyback and I have no problems, reading the message of warner I came the doubt
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20th January 2019, 21:31 | #54347 | Link | |
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Perhaps this was not the most appropriate place to post that info, but I generally wanted to know how to truly enable NVidia dithering for desktop. That way Netflix content gets dithered... I doubt we will ever see madVR support for Microsoft Store Netflix App. Therefore driver-forced dithering is the only way to enable it for Netflix... |
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20th January 2019, 21:44 | #54348 | Link | |
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you missing the point there is nothing to dither after your netflix app/browser.
and games send presentation frame to the driver if they are not before that then there simply isn't anything to dither which wouldn't be dithered anyway. it is very simple to test if nvidia is dithering. you take a gray scale load it in madVR with 10 presentation and you force your GPU driver to send 8 bit RGB. if you don't see 256 steps the driver is clearly dithering. Quote:
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20th January 2019, 22:19 | #54349 | Link |
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God Damn It, just noticed AMD Dxva 4KHDR causes banding.. That's it, Final Straw, I'm selling my RX580..
Not going to sit around waiting for fixes for 3 years.. Sad, because I got a great deal on this card, Overclocks like a champ and runs super cool. Gonna have to buy another 1060, sigh... all these ebay miner 1060s look so ragged/shi77y ..
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Ghetto | 2500k 5Ghz Last edited by tp4tissue; 20th January 2019 at 22:21. |
21st January 2019, 00:26 | #54350 | Link | |
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LG OLED EF950-YAM RX-V685-RYZEN 3600 - 16GBRAM - WIN10 RX 5700 - https://www.videohelp.com/software/madVR/old-versions |
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21st January 2019, 00:39 | #54351 | Link | |
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In this way massive dropped frames are vanished. Now it's ok. Thank you. My question is: the only kind of hardware accelleration supported by those nvidia cards is Cuvid? thank you |
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21st January 2019, 00:45 | #54352 | Link |
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No, something is wrong with your setup, you should be able to use any DXVA mode successfully.
Do you have multiple displays or multiple GPUs, and is the one you're using to display video configured as the main (first) one?
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21st January 2019, 01:13 | #54353 | Link |
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I got the Martian on 4K HDR, I could especially see the Banding on the Mars Red Sky in the intro sequences of the movie. This is through DXVA native on the 580.
This is on the latest adrenaline driver with 09217 madvr. I agree it could very well be my Particular TV Computer/ Cable, software, etc, I'm just at wits end with this, and I know my kitchen computer w/ 1060 does 4KHDR just fine, So.. My patience has been exceeded..
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Ghetto | 2500k 5Ghz Last edited by tp4tissue; 21st January 2019 at 01:19. |
21st January 2019, 01:18 | #54354 | Link | |
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DXVA definitely can do it though, so gotta select DXVA native in Lavfilter hardware acceleration.
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21st January 2019, 03:26 | #54356 | Link | |
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On nvidia and ati ? Which lav setting is the best alternative to CPU decoding.
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21st January 2019, 03:57 | #54357 | Link |
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DXVA2 native decoding can do all kind of stuff with the image.
i know that for nvidia the chroma is misplaced by half a sub pixel with DXVA native and deinterlancing. not sure what AMD is currently doing wrong but bilinear chroma is not the hit anyway. bending is clearly a possibility. beware that bending could come from d3d11 full screen or d3d11 fullscreen window too so check those. nvidia broke d3d11 fullscreen window a long while ago which is now fixed. just use DXVA copyback which should do until 8k which hopefully never takes foot. |
21st January 2019, 04:45 | #54358 | Link | |
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How does dxva copyback improve upon dxva's problems. As in, how does it work.. also does dxva native while using madvr's chroma have any issues ? Finally, what is the highest Nvidia driver that everyone's using with known compatibility.
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21st January 2019, 07:50 | #54359 | Link |
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DXVA2 Copy-back copies the video data from the memory on the GPU to system memory after hardware decoding. This allows code that runs on the CPU to access the video data but takes PCIe bandwidth. The data is also copied back to the GPU for further processing by madVR, and then finally sent to the GPU driver for display. This is why you want at least PCIe 2.0 x16 or PCIe 3.0 x8. For 4K60 HDR you might need more?
To complicate this Nvidia, with all drivers as far as I know, has that odd half pixel chroma offset which madVR avoids in copy-back mode by handling all chroma scaling itself. With DXVA2 Native there is a blur or similar damage when coping the chroma to madVR (GPU to GPU memory copy), even when using non-dxva chroma scaling. D3D11 Native avoids this issue. Nvidia's DXVA2 deinterlacing still has chroma issues no matter what chroma scaling you use. Everything seems to work well for me with the current 417.71 drivers on a RTX 2080 Ti, Win10 1809 17763.253. HDR requires 10-bit output but both D3D11 fullscreen windowed and exclusive work well, with the GPU outputting 8-bit RGB to my LG C7P. I can add a custom mode for 23.976 Hz and optimize it.
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madVR options explained Last edited by Asmodian; 21st January 2019 at 08:02. |
21st January 2019, 10:12 | #54360 | Link | |
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It is very important to me to know that my rtx 2070 can do other hardware decoding different of Cuvid! Now I know that I've some problem. Yes, my mobo (Asus H110M-K D3) has an onboard gpu. Now I'm trying to find a way to turn off this graphic card. Yesterday I've read the user manual but it seems there is no way to turn off it.... In the windows screen control panel I've set to use only the nvidia card but all remains the same... The only acceleration that works for me remains Cuvid... |
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direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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