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#43341 | Link | |
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Join Date: Sep 2012
Posts: 174
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#43342 | Link | |
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Join Date: Dec 2012
Posts: 30
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A bit more info:When a JVC projector receives the HDR metadata-flag, it locks the projector into an "HDR"-mode that JVC (for some strange reason) has disabled the automatic iris off, which leads to much poorer black levels in low-APL scenes. The only solution so far has been to buy the HDFury Linker (199$) that has a feature to strip HDR-metadata. Hence, the projector still receives HDR but isn't locked into the "HDR"mode, which brings back the dynamic iris. This has a huge impact on black levels, and is currently the go-to solution for watching HDR on these projectors. It would be awesome if MadVR could do this so that we can get the same results without having to involve the HDFury Linker. A simple hack would be welcome ![]() |
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#43343 | Link | |||
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Join Date: Sep 2006
Posts: 9,137
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Actually, there will be a new product available pretty soon, making most of the madVR algos available to avi/vapoursynth users. There will be a "pro" version of this new product and a free version. The free version will have some limitions, which will hopefully not be too dramatic, but motivate real "pro" users/companies to buy the pro version. This is all I can say about this for now. More details to be announced later. |
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#43344 | Link | |
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Join Date: Mar 2016
Location: Minsk (Blr)
Posts: 157
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Chroma > NGU Standard (low) 4x
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I'm infected with poor sources. |
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#43345 | Link |
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Join Date: Sep 2006
Posts: 9,137
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I see. Yes, in theory that would be possible. However, in the long run the plan is to create an NGU chroma upscaling algo which makes use of the higher res luma channel. Since the luma channel is always max 2x as large as the chroma channel, this kind of algo will have to be 2x, too. This new kind of algo will hopefully beat all other algos, so I hope it will be the default algo at some point in the future. Because of this reason I'm not too fond of the idea of spending a lot of time now to implement a combination of chroma quadrupling + image doubling, although it is a nice concept.
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#43347 | Link | ||||
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Join Date: Mar 2016
Location: Switzerland
Posts: 140
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So if you "need" to remove it, remove it, just don't waste your time on another NGU variant for this. You can take this image to test with an upscaling to UHD : https://s15.postimg.org/ro3n1k6qz/original.png Or here if you don't want to waste time : NGU Sharp : http://www.mediafire.com/file/aj27g3.../NGU_Sharp.png NGU Sharp SE2 : http://www.mediafire.com/file/d04aw9..._Sharp_SE2.png NGU Standard : http://www.mediafire.com/file/wacasf...U_Standard.png Quote:
On already sharp content, NGU Sharp (low) for chroma doubling is too sharp and quite nasty (see http://screenshotcomparison.com/comparison/206580 and http://screenshotcomparison.com/comparison/206596). Quote:
For instance, if I choose "high" for luma doubling, I would have this for chroma doubling : - let madVR decide - low (Bicubic60 AR) - normal (Jinc AR) - high (NGU AA low) - high (NGU Standard low) - high (NGU Sharp low) - very high (NGU AA medium) - very high (NGU Standard medium) - very high (NGU Sharp medium) or any other combinations of algorithms that you find adequate to use... At the moment, new users do not even know which algorithm is used for chroma doubling without displaying the stats. For fun, I tested Bicubic60 AR against Jinc AR : http://screenshotcomparison.com/comparison/206712 It is not difficult to see the red gradient lines/blocks with Bicubic60 AR, while Jinc AR is smoother and has the highest quality. Quote:
Maybe it is your goal to remove/limit things now from madVR in order propose them back in a "pro" version, so the actual version will remain free ? Last edited by Neo-XP; 15th April 2017 at 14:31. |
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#43348 | Link | |
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Join Date: Mar 2016
Location: Minsk (Blr)
Posts: 157
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2) Should notice that "low quality content" includes content with very different quality flaws. For example, low quality sources may contain staircase noise, which is less amplified by NGU AA. In other hand, NGU Standard is immune to dark halos. However, in general NGU AA looks more suitable at least for very low-quality content, it brings uniform and natural-looking picture. 3,4) No sir! Reconstruction at the price of NGU would have been wonderful.
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I'm infected with poor sources. Last edited by cork_OS; 15th April 2017 at 12:24. |
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#43349 | Link | ||
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Join Date: May 2012
Posts: 447
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Test patterns: Grayscale yuv444p16le perceptually spaced gradient v2.1 (8-bit version), Multicolor yuv444p16le perceptually spaced gradient v2.1 (8-bit version) |
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#43350 | Link | ||
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Join Date: Aug 2004
Posts: 3,477
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It's really too bad you removed SR AB especially when NGU bloats quite a lot in combination with SR, I currently exclusively use SSIM downscaling(1D for HD, 2D for SD as I got GPU cycles to spare) and use SSIM's AB with great results ![]() For 720p@1080p, NGU Sharp wins by a long shot IME. |
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#43351 | Link | ||
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Join Date: Sep 2012
Posts: 174
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#43353 | Link | |||||
Registered Developer
Join Date: Sep 2006
Posts: 9,137
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#43354 | Link | ||
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Join Date: Mar 2016
Location: Switzerland
Posts: 140
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![]() If they don't know what they are doing, they should stick with "let madVR decide" anyway. That is why this option exists, right ? Switching to NGU Sharp (medium) will not solve the problem, as it will still be too sharp. The only solution is other NGU variants (like you did for chroma upscaling). Quote:
I was not planning to use Jinc anyway if there is a good NGU alternative to NGU Sharp for chroma doubling, and Jinc has all the chances to become totally useless (performance and quality wise) with NGU Standard and NGU AA. Last edited by Neo-XP; 15th April 2017 at 17:46. |
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#43356 | Link |
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Join Date: Sep 2011
Posts: 78
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madshi, what about the usage of sharper relaxed AR instead of strict in downscaling after doubling? You said you could reconsider this and apply it more granular depending on the sharpness of a doubling algorithm, as on weak GPUs it adds an excessive load without visible benefits and thus sometimes prevents use of a doubling algorithm with better quality. Can you please apply strict AR at least on NGU AA and maybe also on super-xbr?
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#43357 | Link |
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Join Date: Mar 2017
Posts: 8
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Hi,
various people stated that HDR does only work when using DXVA2 with copy-back on AMD Polaris. I couldn't figure out how to change the DXVA2 mode in madVR. I double-checked every single madVR option in the settings dialog, but could not find anything related to DXVA2/copy-back (I suspect it should be under rendering). So how do I enable this mode in madVR? Thanks, direxx |
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#43358 | Link |
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Join Date: May 2015
Posts: 225
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Ok so, in the past i solved the "flickering" in the black parts of the screen during videos, the letterbox black, changing my monitor settings from 60 Hertz to 75.
But why i still have this sort of horizontal semitransparent flickering only in the video portion of the screen now? If i don't use madvr the flicker goes away. Maybe it's a madvr setting i set not properly? Just to be clear, letterbox black bars are not flickered, solved by changing Hertz frequence. But i still have it in the video portion "between black bars".
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Intel i5-4590 - MSI R9 270X 2GB - 8GB RAM |
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#43359 | Link | |
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Join Date: Apr 2011
Posts: 140
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I have another problem however. i get glitches if i use dxva in lav filters. what could couse this? cuvid is fine
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http://hometheatersettings.com - how to setup htpc and more |
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#43360 | Link |
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Join Date: Jul 2014
Posts: 69
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madshi, i tested new NGU variants with low res low quality anime (direct quadruple very high vs AA 2x doubling very high) and must say that i still like NGU AA the most. NGU Standard is much better than NGU Sharp for low quality anime as it has much less "oil painting" effect and less aliasing but has some "flat" look to it compared to NGU AA. NGU AA has visibly less focus and sharpness compared to NGU Standard but has less aliasing and looks more pleasing and more uniform to me. So far Standard looks like a good alternative to NGU AA for those that want something sharper but not NGU Sharp level of sharp and with slightly thinner lines. I dont really like NGU Soft as it has less focus than NGU AA, thins lines too much and has more aliasing.
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Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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