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22nd August 2019, 19:31 | #181 | Link | |
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This is with regular HDR passthrough, so no madVR tone mapping involved... |
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22nd August 2019, 19:31 | #182 | Link |
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MadVR HDR DTM test on LG OLED
The purpose of this test to compare HDR passthrough (with and without LG's DTM) to madvr's tonemapping with "Output video in HDR format".
Prerequisities: - use "Cinema" preset (not Cinema Home) for HDR10 content on the TV -- if this preset isn't calibrated then reset it and turn off every unnecessary processing - download the test video files (~5.6 GB) from mega.nz -- there are 10 files all together: 2 files in 4 categories (below 760 / 1000 / 4000 / 10000 nits) and 2 others - download madVRhdrMeasure86 and use the settings attached to this post -- create "ShowHdrMode" empty directory in madvr directory (to display more HDR related stats in OSD) -- it's based on Neo-XP's quoted values (note he uses an OLED that doesn't have HDR) -- "highlight recovery strength" is set to very high (are you nuts setting produce artifacts sometimes) -- "apply dynamic clipping" is turned on and only set to 25! (above it clips lot of things and confuses scene detection) -- "no compression limit" 100 supposed to mean that madvr doesn't touch content in 0-100 nits -- "dynamic tuning" 50 results in more vivid image (compared to default 75) -- I'm not sure about "maximal target nits" value -- and I don't know anything about the tons of option at the bottom Testing: - compare every clip in: -- passthrough without LG's DTM -- pixeshader without LG's DTM -- passthrough with LG's DTM - look out for: -- madvr's tonemapping values in OSD -- quality of the image -- potential sharpness differences - the 2 clips below 760 nits are interesting: take a look how madvr behaves Happy testing!
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22nd August 2019, 19:33 | #183 | Link | ||
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This does not help motion resolution at all, smooth motion can only make motion resolution worse. As a technology smooth motion trades some motion resolution for smoothness, but at 120 Hz the loss in motion resolution is negligible (the increase in smoothness is less significant as well).
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madVR options explained |
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22nd August 2019, 19:36 | #184 | Link |
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This was the part that wasn't clear, thanks, I'll check it during the weekend as well.
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22nd August 2019, 23:19 | #185 | Link | |
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22nd August 2019, 23:31 | #186 | Link | |
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It would be interesting if it produces the same difference between RGB and YCbCr as a pc does. Just make sure to turn every tone mapping or picture enhancements off. Try it especially with the red pattern from here: https://drive.google.com/drive/folde...DUewbFsSXY1r8p |
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22nd August 2019, 23:37 | #187 | Link | |
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RGB untouched by madVR and presented in PC mode should be the most accurate rendition without having to account for any errors by the GPU conversion to YCbCr or the display using the wrong color matrix for RGB to YCbCr 4:2:2 to RGB.
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HOW TO - Set up madVR for Kodi DSPlayer & External Media Players Last edited by Warner306; 22nd August 2019 at 23:41. |
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22nd August 2019, 23:41 | #188 | Link | |
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This could just be hearsay, but the poster is knowledgeable about DisplayCal curves.
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HOW TO - Set up madVR for Kodi DSPlayer & External Media Players |
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22nd August 2019, 23:45 | #189 | Link | |
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HOW TO - Set up madVR for Kodi DSPlayer & External Media Players |
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23rd August 2019, 00:23 | #190 | Link | |
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23rd August 2019, 00:25 | #191 | Link | |
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23rd August 2019, 00:28 | #192 | Link |
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And a lot of them are only going to apply to the live algorithm, as well. I tend to not use the live algo myself and instead prefer to create measurement files. The improvemenets in the live algo have been remarkable, but, you are exactly right in that they seem to be more targeted to HDR->SDR. That's not to say you COULDN'T use them with HDR output, I suppose.
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23rd August 2019, 01:24 | #193 | Link | |
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RGB + PC mode + HDR is like the worst combination and produces terrible banding on the C8. |
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23rd August 2019, 01:47 | #194 | Link | |
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Changing "dynamic tuning" has no effect for me. With target nits at 760, passthrough looks the same as pixel shaders for clips that are around 1000 nits. In the John Wick clip, the lights on the ambulance get a bit brighter using passthrough and LG DTM but no highlight detail loss. For the 'The Meg' clip, there's clipping with both passthrough and pixel shaders (LG DTM on/off as well) with your settings. Had posted about this here: https://forum.doom9.org/showthread.p...74#post1882574 Can be fixed with "maximal target nits" at 760. With that, there's more highlight detail resolved with LG DTM ON. In Max Max: Fury Road, using passthrough causes specular highlights to become grey (reflection on the car) while pixel shaders keep it white. That's about it, there's not much difference on that one. About LG's DTM, overall it seems to be better to keep highlight detail but in lower brightness scenes, it acts like madVR's "apply dynamic clipping" and makes midtones brighter. However for some reason my WB 20 points show 669 and 1023 all the time so something might be wrong on my side. Sometimes it's at 713, and everything looks fine when sending 2000 nits to the display instead of clipping though. Edit: Yep, with passthrough I can get it to switch to 713 when resending metadata. With pixel shaders, it doesn't seem to switch at all with the dynamic target nits. Sadly going back to 385.28 did not fix it, still sticks to 669 even though madVR tonemaps to 2000 nits. Last edited by quietvoid; 23rd August 2019 at 02:39. |
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23rd August 2019, 08:30 | #195 | Link | |||||
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What nits setting did you use when created your measurement files? Not to mention that's exactly what we want to do as well - the only diff is the way higher nits setting -, the problem is we can't disable the TV's tonemapping. But if you insist, you can quickly create measurement files for the uploaded clips as well. But in that case post a screenshot of your settings, please. Well, I don't think it's worth it, there's only minimal difference between passthrough and pixelshader (see below).
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23rd August 2019, 09:16 | #196 | Link | ||||||
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Which player do you use? I use MPC-BE / HC. Indeed, I don't see any difference between 50 and 200 (not even in numbers in OSD), and there was a huge diff when I used madmeasure78 with SDR TV. Maybe the bottom scene detection values, or did it get broken? Quote:
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It should modify the protected 0-100 nits range. Note that this option is broken since the beginning and madshi didn't fixed it yet, hence the lower 25 value is used. Maybe lowering it helps? 15/10? Although I only tested 3 of them but there's not much difference between passthrough (without DTM) and pixelshader at 760 nits.
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Ryzen 5 2600,Asus Prime b450-Plus,16GB,MSI GTX 1060 Gaming X 6GB(v398.18),Win10 LTSC 1809,MPC-BEx64+LAV+MadVR,Yamaha RX-A870,LG OLED77G2(2160p@23/24/25/29/30/50/59/60Hz) | madvr config Last edited by chros; 23rd August 2019 at 09:48. |
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23rd August 2019, 09:56 | #197 | Link |
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I added to the above test requirements the following:
- TV settings - create "ShowHdrMode" empty directory in madvr directory (to display more HDR related stats in OSD) Just checked the 2 clips (Hunger Games and Alita) that are under 760 nits with pixelshader: - measured and tonemapped nit values are not always the same - why? I thought if the content is below the set 760 nits then it shouldn't modify it. - maybe because of the scene detection algo ...
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23rd August 2019, 10:26 | #198 | Link | |
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RGB full YCbCr422 white: 860 1000 red: 530 500 green: 820 710 blue: 900 530 cyan: 820 740 magenta: 780 740 yellow: 820 1000
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Ryzen 5 2600,Asus Prime b450-Plus,16GB,MSI GTX 1060 Gaming X 6GB(v398.18),Win10 LTSC 1809,MPC-BEx64+LAV+MadVR,Yamaha RX-A870,LG OLED77G2(2160p@23/24/25/29/30/50/59/60Hz) | madvr config Last edited by chros; 23rd August 2019 at 10:29. |
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23rd August 2019, 11:16 | #199 | Link | |
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I just tried pc-mode HDR again a few days ago. Played the UHD of Brightburn, skipped to some dark scene and it looked like some low bitrate TV broadcast. Even turning madVR's 'reduce banding artifacts" to high didn't make it any better, which makes sense as the banding wasn't in the source but was produced by the TV. |
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23rd August 2019, 11:44 | #200 | Link | |
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Sent from my SM-G975U using Tapatalk
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