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17th May 2018, 20:13 | #50902 | Link |
King of the Jungle
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Is anyone here familiar with creating HDR test patterns in Mad TPG?
Under the HDR dropdown I'm not sure what I should be setting the nits to? Should it be the closest to the maximum my display is capable of (430nits in my case) or is it the peak luminanace (1000 nits in my case) or maybe something else? |
17th May 2018, 20:32 | #50903 | Link |
Is this for real?
Join Date: Mar 2016
Location: Norway
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I'm gonna give Windows 8.1 a try on my HTPC (swap out Win10), and may I ask which nVidia driver version works best for MadVr and a GTX 1080 card? I don't play any games on this machine, so MadVr is my only consern.
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My HTPC : i9 10900K | nVidia RTX 4070 Super | TV : Samsung 75Q9FN QLED |
17th May 2018, 20:44 | #50904 | Link | |
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Quote:
I still have to set the peak nits at or above the real peak in the content or it will do that, and some movies go pretty high, I have seen up to 2500 before.
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madVR options explained Last edited by Asmodian; 17th May 2018 at 21:10. |
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17th May 2018, 20:52 | #50905 | Link | |
King of the Jungle
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Quote:
You may be interested to know that I have managed to get rid of nearly all of the clipping by setting a very large number of patches on the HDR profile. The default is 175 but I ran 1100 at Florian's suggestion and nearly all of the clipping has gone. I'm currently running a 1500 patch profile and fingers crossed the clipping will be totally gone this time. Out of interest have you noticed an overall reduction in luminance since using HDR 3DLUTS? Everything seems just a little bit duller than with passthrough to me. |
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17th May 2018, 21:10 | #50906 | Link |
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It is LG's 2017 OLED, C7P.
I also used high patch counts, I believe I was using ~1000. Maybe I should try some more but when not using PC mode I got good results (no banding/clipping). It is expected that a 3DLUT (or any software calibration) would lower brightness, the only way to do any type of correction in software is to send <100% because you can never send >100%. I ended up not using a 3DLUT for HDR, I did a manual calibration of my TV in Calman and simply use passthrough in madVR. Ideally you need a 3DLUT for every video with the peek nits set for the metadata of that video and after the manual calibration, and in home theater mode, my TV does a decent job tone mapping. A 3DLUT crafted for a particular video is a little better but passthough is better than using a "worst case" 3DLUT for everything. I think there is more difficult HDR content, for example some of the earlier Harry Potter movies have very high peek nits in a few scenes (causing out of gamut issues like this) while most newer movies seem to use a more reasonable peek nits and all look good with the same 3DLUT.
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madVR options explained |
17th May 2018, 21:40 | #50907 | Link | |
King of the Jungle
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Quote:
One question I do have for you; is there a reason you've chosen to use Passthrough rather than have MadVR pixel shader math do the work? |
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17th May 2018, 22:02 | #50908 | Link |
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Concerning exclusive and windowed
I'm sorry if this has been addressed... If tried to skim this long thread but I would really appreciate some answers to Fullscreen exclusive vs fullscreen windowed;
Is there any discerning difference in performance? I have a 1070 TI strix with a i7-4790k and 16 GB ram and I've had several issues with "failed exclusive mode" when running files in a playlist..and at worst, when moving the mouse sometimes the screen goes blank and I'm forced to hard reset the PC to get out of it..However, running in fullscreen windowed doesn't give any issues whatsoever. I've read that using exclusive mode isn't a must anymore..long story short; is fullscreen windowed with d3d11 as good as exclusive? |
17th May 2018, 22:08 | #50909 | Link | |
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Quote:
I use very different display settings for HDR, via its HDR mode, so I don't use pixel shaders (or 3DLUT) to convert to SDR. ~680 nits is way too high for SDR. Yes, I like it better myself. Edit: There is currently limited 10-bit support in fullscreen windowed d3d11 so use exclusive if you need 10 bit. I recommend sticking to 8 bit output in most cases anyway but it is good to know if you are testing 10 bit output.
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madVR options explained Last edited by Asmodian; 17th May 2018 at 22:15. |
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17th May 2018, 22:21 | #50910 | Link | |
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17th May 2018, 23:09 | #50911 | Link |
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the Panasonic plasmas accept 10- and 12-bit but it's not worth the hassle and the potential for quality loss if Nvidia messes something up in their drivers.
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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 |
17th May 2018, 23:58 | #50912 | Link |
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Waste of time on this set, greyscale is no better than 8bit with dithering, I looked myself. As mentioned many times already most displays have zero benefit using 10bit.
Last edited by ryrynz; 18th May 2018 at 00:00. |
18th May 2018, 07:17 | #50913 | Link |
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When you compare native 10bits vs 8bits with a display able to properly handle 10-12bits (i.e. natively) and the dithering is done by MadVR without the GPU doing its thing behind its back, you can’t look for banding on a pattern. There most likely won’t be any. You have to look for noise in real content. There should be a bit more noise in 8bits dithered than in 10bits, but there shouldn’t be more banding (provided the source is 10bits and properly mastered) as MadVR’s dithering is excellent. Also I suppose that by greyscale you mean a greyscale ramp, as 10bits shouldn’t haven any effect on calibration.
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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; 18th May 2018 at 07:22. |
18th May 2018, 07:17 | #50914 | Link |
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Just wanted to update and share.
I have finally managed on Nvidia to get 23.976 4k RGB 10bit..yep, not 12, but 10 (both SDR and HDR) (confirmed also by my AV receiver on-screen info). I discovered that using the display port (which is 1.4 on the 1080), and using the Club 3D CAC 1080 Display Port 1.4 HDMI 2.0 A (B) Hdr Active displayport to hdmi adapter, i can now choose between 8, 10 and 12bit in NVC @ 4k (10 and 12bit upto 30hz). Using the adapter also puts the driver into a slightly different mode, in as far as Set Content Type is no longer available etc. Also, the white point scale and crispness is different than straight hdmi (which I prefer over straight hdmi). Some of the Nvidia drivers will only report upto 30hz being available using the adapter, but 397.76 displays all modes upto 60hz. The trade off is, as with some previous drivers, you cannot set up a custom res at 10bit (defaults to 8), so thats a down side - I guess it's about which trade offs you can live with. At least on my set up, the colours seem more faithful, and no more over blown colours in HDR mode. I know there is a lot of debate about 8bit with dithering etc, but, just wanted to share. Update: Ok, maybe i'm not doing the test correctly somehow, but using the 4.4.4 Chroma test image (link https://linustechtips.com/main/uploa...8c8d22f67e.png ) it also appears to pass the test at 23hz....?
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LG OLED55BX6LB, Zidoo Z1000 Pro, Yamaha RX-A3060, Polk Signature Fronts & Centre, Wharfedale D300 Atmos surrounds, Polk Signature HTS 10 Sub, DSPeaker Antimode 8033 Cinema Last edited by oldpainlesskodi; 18th May 2018 at 14:54. Reason: update |
18th May 2018, 07:30 | #50915 | Link |
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Hi, I've following this thread for years now, but can't seem to find the answer to this, I know for sure someone on this thread will know the answer to this for sure.
When trying to calibrate using madTPG as a pattern generator, i have noticed no matter what changes i make to gamma etc on windows 7, madTPG pattern gamma etc remains untouched and does not change in line with the windows 7 gamma etc. Internal pattern gamma etc change in both calman and hcfr but not in madTPG. Thanks sim11 |
18th May 2018, 09:09 | #50916 | Link | |
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Quote:
I'd recommend setting 'error diffusion option 2' and 'change dither for every frame' This resulted in the least amount of noise on my VT60, surprisingly changing the dither patterns should increase the noise but on plasma it appears to have the opposite effect, go figure. Last edited by ryrynz; 18th May 2018 at 09:36. |
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18th May 2018, 16:43 | #50918 | Link | |
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Quote:
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HOW TO - Set up madVR for Kodi DSPlayer & External Media Players Last edited by Warner306; 18th May 2018 at 16:46. |
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18th May 2018, 16:46 | #50919 | Link |
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What do you mean by delays one frame? NGU will shift a pixel or two but frames should be rendered the same. Maybe it is taking a second longer at playback start to fill the queues?
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HOW TO - Set up madVR for Kodi DSPlayer & External Media Players |
18th May 2018, 16:49 | #50920 | Link | |
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Quote:
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HOW TO - Set up madVR for Kodi DSPlayer & External Media Players |
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Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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