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#34641 | Link |
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Join Date: Apr 2010
Posts: 234
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What about Dolby Vision support in madVR? Is it something technically impossible to implement?
Thanks
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__________________ System: Intel Core i5-6500, 8GB RAM, GTX960/GTX1060, 55" Sony Bravia KDL-55HX850 @ 1920x1080 24p, Yamaha YSR-1100 surround bar Setup: Win7/Win10 Pro, madvr/JRiver 24 |
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#34642 | Link | ||||||||
Registered Developer
Join Date: Sep 2006
Posts: 9,137
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FWIW, there's no exact science for how these HDR -> SDR conversions work. So the numbers in the settings dialog are rough estimates. Things also depend on the ambient light level in the room and how your display is calibrated. E.g. with a front projection setup, although the luminance is much lower than e.g. 600 nits, you might still get the best image quality by setting your display to 600 or 900 nits. So my recommendation is to simply play some HDR content and let you eyes decide which nits setting in madVR looks best in your setup. Quote:
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I neither have any such content nor any technical spec. Also there are no decoders available for that. But my best guess is that it might be compatible to "conventional" HDR. I don't really know, though. |
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#34643 | Link | |
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Join Date: Sep 2013
Posts: 919
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Quote:
So this "peak brightness" selector only works if you have perfect blacks (stable and unchangable MLL where only the peak brightness changes, aka FALD or OLED display)??
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System: i7 3770K, GTX660, Win7 64bit, Panasonic ST60, Dell U2410. |
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#34644 | Link |
Registered Developer
Join Date: Sep 2006
Posts: 9,137
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I'm not sure why you keep trying to limit the "peak brightness selector" to specific conditions under which it might work or might not work. There is no such limit. And as I said, the display contrast got nothing to do with it.
HDR content that is mastered on e.g. a 4000 nits display should ideally be displayed on a 4000 nits display. If your display cannot do 4000 nits then madVR has to compress the highlights, otherwise the image would be much too dim overall. The difference between 1200 nits and 400 nits in the madVR "peak luminance" option is how much compression madVR applies to the luminance channel. The dimmer your display is the more compression madVR has to apply to make the image bright enough overall. Why don't you simply download some HDR content and try different settings for that madVR option and see which works best for you? I think for most people with today's display technology, the default setting of 600 nits should work well. If the image is too dim/dull for your taste, try 400 nits. If the image is too bright, try 900 nits or higher. |
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#34645 | Link |
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Join Date: Sep 2013
Posts: 919
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I understand that it compresses the range, what I don't understand is whether you assume that the display has infinitely low black leve and the only thing that changes is the peak brightness level?
The only free content that is available now is a couple of seconds of Life of Pi and Exodus right?
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System: i7 3770K, GTX660, Win7 64bit, Panasonic ST60, Dell U2410. |
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#34646 | Link |
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Join Date: Sep 2006
Posts: 9,137
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We're talking about digital processing. madVR outputs video content with a black level value of 0 (or 16 when using TV levels). Whether or not the display has infinitely low black levels or not isn't something madVR has to worry about.
Basically what madVR does is modifying the "gamma curve" (in words that might make more sense to you), to account for the difference in peak luminance capabilities between the mastering display and your display. |
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#34647 | Link |
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Join Date: Sep 2013
Posts: 919
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Got it, I'm kinda' slow today.
Sorry about that. BTW, it would by nice to bypass this feature for reference, or just to see how the image mapped across standard power curve gamma.
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System: i7 3770K, GTX660, Win7 64bit, Panasonic ST60, Dell U2410. Last edited by James Freeman; 14th December 2015 at 20:38. |
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#34648 | Link |
Registered Developer
Join Date: Mar 2010
Location: Hamburg/Germany
Posts: 10,042
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Just switch to EVR or something. It looks terrible, totally lifeless and dull.
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LAV Filters - open source ffmpeg based media splitter and decoders |
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#34649 | Link | |
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Join Date: Feb 2014
Posts: 139
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When you're playing FRC 59 hz at 60 hz display, smooth motion has to blend pretty much every single 60 hz frame, which adds substantially more load compared to 24hz at 60 hz. Yeah, it would be much harder, plus should look much worse with so much frame ghosting. You may as well leave it off or use reclock for that. FRC works best when the display rate is at least double the source framerate. |
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#34650 | Link | |
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Join Date: May 2015
Posts: 78
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#34652 | Link | ||
Registered User
Join Date: May 2010
Posts: 236
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#34654 | Link |
Registered User
Join Date: Sep 2006
Posts: 2,181
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is it possible to take screenshots which contain subtitle lines with madvr? from what I can see they arent saved with the picture.
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Laptop Lenovo Legion 5 17IMH05: i5-10300H, 16 GB Ram, NVIDIA GTX 1650 Ti (+ Intel UHD 630), Windows 10 x64, madVR (x64), MPC-HC (x64), LAV Filter (x64), XySubfilter (x64) (K-lite codec pack) |
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#34655 | Link | |
Registered Developer
Join Date: Sep 2006
Posts: 9,137
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D3D11 fullscreen windowed (8 bit) covered by some windows madVR window [madVR] {0,0,1920,1200} covered by StrokesPlus.exe window [STROKESPLUS] {0,0,1920,1200} So basically StrokesPlus.exe has a fullscreen window which covers the madVR rendering window. That's the reason why madVR can't go FSE. I think there was a way, but I don't remember. Maybe someone else can help out? FWIW, screenshotting will be revisited/improved in some future version, but not very soon. |
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#34656 | Link | |
Registered User
Join Date: Dec 2002
Posts: 5,570
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#34657 | Link | |
Registered User
Join Date: Feb 2002
Posts: 302
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-Graphedit using madVR as a render shows a black screen only when directly connected to capture source. This doesn't happen playing back a file. -Both Potsplayer and MPC-HC show the queue being pretty much empty all the time when playing a capture source. -You are right, the deinterlacing from madVR works great (no need for ffdshow deinterlacing) ONLY if I playback an AVI of the capture source. I think this is mostly due to the queue being empty though... -Using Graphedit and VM9 and ffdshow to set interlace flag to force DXVA deinterlacing, everything works perfectly with capture source. I'm pretty sure it's not my GPU as I have 1080i clips that play fine with deinterlacing on. Also the fact it works fine with an AVI of the same capture source shows it's not maxing the GPU at all. I think it is a hint that madVR shows black for Graphedit with capture source but not files. Now I do realize having a huge decoding queue would introduce input lag for gaming like in this example, but if I were to watch just analog TV (which actually doesn't exist anymore) or just say a VCR, I would still have this problem. I could also just lower the queue if I do live game. Last edited by Aktan; 15th December 2015 at 05:24. |
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#34659 | Link |
Registered User
Join Date: Mar 2006
Posts: 1,538
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I have exhibited random crashes in the past couple of weeks. I have updated madVR, LAV Filters, MPC-BE and graphic drivers to the latest versions but I can't narrow down the culprit. I'm hoping this log provide some kind of clarity. It is a large file so please forgive me.
http://www.filedropper.com/madvr-log |
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#34660 | Link |
Registered User
Join Date: Dec 2014
Posts: 1,127
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Are there any guidelines for setting peak luminance? Does this even matter with non-HDR content? If so, this option could use better labelling.
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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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