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20th May 2019, 17:27 | #56281 | Link | |
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20th May 2019, 17:30 | #56282 | Link | |
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So what are you saying for how should he run his HTPC to RS600 then for tone-mapped HDR? What should we set in nVidia, YCC422 so that it's not happening behind madVR's back? Last edited by SirMaster; 20th May 2019 at 17:41. |
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20th May 2019, 17:43 | #56283 | Link | |
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You should test chroma with various options. Given that the RS600 will force YCC422 with any colorspace in 12bits, I would suppose that selecting this in the driver would be best, but when I do this with the rs2000 it's still a worse result than using 8bits.
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21st May 2019, 12:29 | #56284 | Link |
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Just started using Madvr, very impressed!
I just had a couple of questions I'm struggling to find answers to. Apologies if I'm not fully understanding this! The issues I have are: I want to use madvr to upscale TV at 50hz to 2160p, however switching to 50hz only works if I set the colour output in the Nvidia control panel to 4:2:0 chroma/luma sampling OR 8 bit precision (due to the bandwith limitations of HDMI 2.0). For some reason I can only select 8/12 bit for precision and not 10 bit. My understanding is that HDMI 2.0 has enough bandwidth for full RGB/10 bit output at 50hz so it's annoying the option doesn't seem to be available. (Is there a reason for this?) But I also want HDR output for films at 23p. So I guess I am forced to set the Nvidia control panel to output 12 bit and not 8 bit? If this is the case I am also forced to use 4:2:0 chroma/luma to allow 50hz to work. So I guess my question is are you 'stuck' with what you set in the Nvidia control panel for all refresh rates, or can/does Madvr change the colour precision/subsampling output dynamically, along with the refresh rate? I'm running in DX11 FSE mode ie Can/does madvr switch the output to 10/12bit RGB at 2160p23 and 8bit RGB (or even 12bit 4:2:0) at 50hz? If not then is the quality difference of always outputting 4:2:0 vs RGB negligible for HTPC use? |
21st May 2019, 16:10 | #56285 | Link |
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Why is 12 bit important to you? 4:2:0 at 12 bit is much lower quality than RGB at 8 bit.
I suggest you simply use 8 bit RGB all the time. madVR cannot change the bit depth but if you set 23Hz as 12bit the driver will use 12 bit when madVR switches to 23Hz. Please do some visual tests, if 12 bit looks the same as 8 bit to you please do not obsess about getting 12 bit. 12 bit really is the least important improvement and not worth sacrificing anything else for.
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21st May 2019, 23:41 | #56286 | Link |
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Thanks for the reply... Sorry I was under the impression that the display needed to be configured to 10 or 12 bit for HDR to work. Is that not the case? This was the only reason I was trying to use it.
If it does require it then it seems I must choose between having HDR available (but using 4:2:0) or full RGB, as I can't have both (due to needing to switch to 50hz for TV) |
22nd May 2019, 00:53 | #56287 | Link |
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No, HDR does not need 10 bit, at least on Nvidia with old and new drivers. There were some in the middle that did require 10 bit.
AMD does require 10 bit for HDR.
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22nd May 2019, 12:53 | #56288 | Link |
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Many thanks I understand much better now. I'd assumed the extra bits were needed to specify the greater luminance for HDR but I've realised this isn't how it works after a bit more reading.
You're right, 10 -> 8-bit dithered by madvr looks almost identical to 10-bit native close up, and is completely indistinguishable at viewing distance. Certainly not worth worrying about! Thanks again! |
22nd May 2019, 19:46 | #56290 | Link |
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It would look almost identical even on a very good 10 bit display. The difference between well dithered 8 bit and well dithered 10 bit is simply very subtle.
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22nd May 2019, 19:49 | #56291 | Link |
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Hi,
i am noob for here. Have this problem: Add images: Same configuration settings TV PLEX TV Oled c8 - HDR: TV OLED c8 - Mode HDMI / MODE PC / MODE blueray HTPC - Vega 11 - MAdvr HDR The HDR logo is activated on TV. (this is not the problem) Why is it lost in color? Has anyone had problems with Vega 11? THANKS :-S Last edited by Daicon; 22nd May 2019 at 19:54. |
22nd May 2019, 20:09 | #56292 | Link |
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Are you sure it isn't your TV? That looks like a very different white point and you do not mention what mode you are using for the PLEX. Try Expert Dark Room for both. Are you using madVR's tone mapping or just passthrough?
Sorry, I have no experience with Vega.
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22nd May 2019, 20:36 | #56293 | Link | |
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PS: No one noticed the image changes a change in Windows10 1903 with HDR passthrought? Last edited by DMU; 22nd May 2019 at 20:42. |
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22nd May 2019, 21:08 | #56295 | Link |
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With 2020 displayed as if it was 709 I usually get obviously lower contrast. I don't have a lot of experiance trying to judge photos of displays but the contrast seems similar on both. It looks like a white point and tone mapping difference to me, but I could be wrong.
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22nd May 2019, 21:29 | #56296 | Link | |
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EDiT: But you're right, it seems a different color temperature. Last edited by Alexkral; 22nd May 2019 at 21:55. |
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22nd May 2019, 23:01 | #56299 | Link | |||
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The TV have same settings and same mode (Technicolor) with Plex and HTPC Madvr. just passthrough. :-( Quote:
I activated FSE, but dont have any effect different. :-S Quote:
I have researched a little, and it seems that the problem continues that way ... That is to say. When I deactivate "passthrough", and I select in "calibration" 709, the image (SDR) is very similar in color to the HDR of PLEX (but without the brightness / etc of the HDR, of course.) When selecting 2020, the image (SDR) becomes more muted, as it happens to me in HDR. The problem is that I select the options that I select, when HDR is activated in full screen, I always get the SAME result as the 2nd image I have set. Any solution? What am I doing wrong...?? |
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Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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