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17th October 2018, 13:05 | #53321 | Link |
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Sorry, I meant 4k UHD/1080p/720p contents on 4k/2k displays.
Thanks, that's not a good news for me
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17th October 2018, 13:20 | #53322 | Link | |
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Quote:
https://imgur.com/a/rql9XUw
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17th October 2018, 15:34 | #53324 | Link |
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Already using D3D11 decoding. Highlight recovery is just really slow. It is not an issue with 24 fps content.
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HOW TO - Set up madVR for Kodi DSPlayer & External Media Players |
17th October 2018, 15:43 | #53325 | Link | ||
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Quote:
The brightness response of BT.2390 is also very different than straight PQ clipping because tone mapping deviates far off the original PQ curve. The SDR gamma curve would have to be contorted a bit to make it look right. It would be hard to say what would be causing the differences without knowing if there are differences in the tone curves. I would try testing different mastering peaks (lower than 10,000) with target nits values in madVR that are above your display brightness because that's how most would use pixel shader. If I set my display to 175 nits and the target nits to 175 nits, the image is washed out. I don't think that is intended by BT.2390. Quote:
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HOW TO - Set up madVR for Kodi DSPlayer & External Media Players Last edited by Warner306; 17th October 2018 at 15:54. |
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17th October 2018, 15:53 | #53326 | Link |
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Bad metadata or lack of metadata. The measurement would be more accurate. The metadata is just available to assist with tone mapping.
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HOW TO - Set up madVR for Kodi DSPlayer & External Media Players |
17th October 2018, 15:57 | #53328 | Link |
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I would check measure each frame and enable highlight recovery. You would gain by using both settings.
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HOW TO - Set up madVR for Kodi DSPlayer & External Media Players |
17th October 2018, 17:18 | #53330 | Link |
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On my 6gb 1060 I stick with medium. It's very subjective but most people aren't going to see a HUGE difference between medium and high and on lower end equipment where performance matters more it's certainly not worth it IMO.
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17th October 2018, 17:21 | #53331 | Link |
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@SamuriHL, just to get a speed impression, with your 1060, I suppose you can do the following with ease:
1) "NGU High" Luma upscaling with 1080 -> 4K at 60fps? (Chroma set to "normal"). 2) Tone mapping including highlight recovery and measurements at 4K 60fps? Correct? Thanks! |
17th October 2018, 17:37 | #53333 | Link | |
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Quote:
Just measured that my near black tracking is rising slower than the BT.2390 reference (up to 8% stimulus), so it is darker than it should be, but data is there. Last edited by mytbyte; 17th October 2018 at 17:46. |
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17th October 2018, 18:13 | #53334 | Link | |
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Quote:
2) Rendering is about 35ms or so at 4k 60 with tone mapping highlight recovery measurements and 65% desat. Of note I am using D3D11 decoding not doing any copy back. P.S. All trade quality options are disabled.
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17th October 2018, 18:25 | #53335 | Link |
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Out of curiosity what is the state of madVR with an AMD Vega solution for 4K HDR material? I am looking to replace my HTPC with a Hades Canyon NUC (8809G) and want to understand what issues I might run into. I saw a post way back about madVR being unable to autoswitch HDR mode in Windows with AMD cards. Has this changed?
I am presently using a GTX960/Pentium G4600 based machine now and want to get a similar experience... just smaller. Edit: I see that AMD now has a private HDR API that madVR will utilize. That answers that, but is there anything else that might be an issue? Last edited by Balthazar2k4; 17th October 2018 at 20:08. |
17th October 2018, 20:59 | #53336 | Link |
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Hi Madshi,
I'm sorry to be late for your request of feedback about NNEDI3, like many others I don't update madVR very often (I'm still using 0.92.2 now), neither read this thread, but I think there was a good reason to keep it. Maybe nobody else noticed, but it is/was the only doubling algorithm capable of independent width or height doubling. I encode my BD3Ds to 1920 x 2160 OU for viewing on my FPR UHD TV. This way there is no need to upscale the height, the TV just take the available lines and reorder them in a line alternative scheme. When I play these videos in fullscreen with madVR using NNEDI3 for doubling, I can see in the OSD that after chroma upscaling, luma x (or the whole image x depending on settings for chroma doubling) is upscaled with NNEDI and image y is left untouched. But if I choose super-xbr or NGU for doubling, I can see that after chroma upscaling, both image x and image y are upscaled and then image y is downscaled with the algorithm chosed. I understand that you had reasons to remove NNEDI3 so I'm not going to ask for it back, but maybe this feature could be added to NGU. Anyway I suspect that image y doubling to 4320 and then downscaling back to 2160 should not mean a significant quality loss, but given that it is not necessary in this situation, maybe I should just forget about doubling and use one of the other upscaling algorithms. Also, I don't understand if the new option "tone map HDR using external 3DLUT" is just for processing HDR, or for both processing HDR and converting HDR to SDR. Last edited by Alexkral; 18th October 2018 at 05:54. |
17th October 2018, 21:45 | #53337 | Link | |
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Quote:
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17th October 2018, 22:31 | #53338 | Link |
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On my my 1050 Ti on 1080 display I have to check 'compromise on mapping accuracy' for 60p HDR content. With 24p it's fine.
Not a big deal for me as most HDR content besides demos still is 24p movies at the moment.
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18th October 2018, 16:18 | #53340 | Link |
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If you create a profile for 4K60 with scale chroma separately checked under trade quality for performance, you should be able to enable everything again, save highlight recovery.
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HOW TO - Set up madVR for Kodi DSPlayer & External Media Players Last edited by Warner306; 18th October 2018 at 17:54. |
Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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