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21st February 2018, 18:41 | #49161 | Link |
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leeperry: it looks like your solution is just simple matrix conversion (as opposed to a 3DLUT-based solution). It will do gamut mapping alright, just not in a very accurate way, especially if your monitor is not perfectly linear. Also part of of this discussion is about making it easier for madVR users to get perfect color correction by simply doing the right thing out-of-the-box as soon as an ICC profile is configured for the monitor in which video is playing, and asking them to write shader code or setting up complex profiles goes a bit against that don't you think
(I also have the suspicion that naive matrix-based transforms will give poor results if the source gamut is very different from the destination gamut, e.g. DCI-P3 -> BT.709, because the mapping is very inflexible and any non-linearities get magnified. I'm just speculating though.) Last edited by e-t172; 21st February 2018 at 18:50. |
21st February 2018, 22:30 | #49162 | Link | |||
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You can get SSIM 2D by 'use "image downscaling" settings' and having SSIM 2D set there. Quote:
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"Stack AR on top" "AR" is Anti-ringing, it's a tick box under 'downscaling'. Personally I prefer the added sharpness with it not being ticked (plus I need the extra headroom) I keep sharpeners for at the end if required, I find supersampling and downscaling first achieves more pleasing results. |
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22nd February 2018, 02:55 | #49166 | Link |
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Yes, 390.77 has some good fixes for HDR and no regressions I know of. Still weirdness with custom resolutions sometimes but that is in all the options.
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madVR options explained |
22nd February 2018, 07:23 | #49167 | Link |
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Could you please specify what the problems with custom resolutions in the driver are?
I'm interested because I recently started using the custom display mode optimization in madVR and have problems getting anything better than 1 drop/repeat every 2 hours. Even after 6 optimizations, each with over 30 minutes of data collection time, I'm still usually in the 1 hour range. Is this somehow related? |
22nd February 2018, 10:15 | #49168 | Link |
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No, it is an error message that the mode cannot be applied at all. Your issue may be madVR not switching to the actual custom resolution, try applying it manually. I have had that issue before as well, actually I suppose that might be another driver issue with the custom resolution API, but it wasn't the one I was talking about.
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madVR options explained |
22nd February 2018, 12:31 | #49169 | Link | |
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22nd February 2018, 16:23 | #49170 | Link |
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Am I correct in thinking that by having one frame drop/repeat per hour that the audio would slowly go out of sync by up to 42 ms (1 frame) within that hour and then reset back to 0 once the drop/repeat happens?
Last edited by j82k; 22nd February 2018 at 16:30. |
22nd February 2018, 18:12 | #49171 | Link |
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It's too bad that an online petition to Nvidia to solve once and for all the clusterfuck they have had for years and years with custom resolutions won't get anywhere. It's absolutely unbelievable that this is still giving problems.
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22nd February 2018, 22:12 | #49173 | Link |
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I'm reading a lot and hardly trying to figure out how I know when I simply need to enable deinterlacing and when I need IVTC.
I never seen IVTC turned on automatically, don't know why. Possibile that i never played a telecine source? No. So why my sources are not detected as telecined, so film? Don't remember who said that automatically source type detection doesn't work. So actually only deinterlacing is turned on when an interlaced source is played. I understand the difference between interlaced and telecine but don't know how to recognize them... I have a pal dvd, how I know if I only need deinterlacing or I need IVTC? I assume that a movie is filmed on film. Not always. So to reproduce it on TV monitors, with a DVD player for example, the telecine process is used. So to reproduce it on a progressive monitor i need IVTC to restore original 24 frames from the 59 resulting from the telecine. But at the same time, I assume that every movie aired in TV is telecined. But I'm certainly wrong on this. This for film. Video is interlaced. I can see video in series or on DVD extra for example. In that case I simply need deinterlacing and not IVTC. Because the source is not film so I don't need to return to the base resolution but just to deinterlace the image. I'm really trying to figure out this. I assume, but this is only a suposition, that everything that's not a movie, aired on TV needs only deinterlacing because it's basically a video, like commercials. Movies instead need IVTC. Please don't cut my head off if I said someting (or all) wrong. I'm really taking note of the difference. Atm I created two profiles. One of these I called DVD. In it I use lighter scalers to avoid dropped frames caused by deinterlacing process. For the rest I use my other base profile. But in my dvd profile, how I know if I only need deinterlacing or IVTC?
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Intel i5-4590 - MSI R9 270X 2GB - 8GB RAM Last edited by steakhutzeee; 22nd February 2018 at 22:14. |
22nd February 2018, 22:38 | #49176 | Link |
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Got a madVR / Driver Stopped Responding crash here, latest version and latest 18.2.2 AMD drivers on a R9 270X. Windows 8.1.
The crash occured when I was seeking a passthrough Twitch stream in MPC-HC, while a second instance of MPC-HC had a movie paused. https://pastebin.com/ZvprjHaD |
22nd February 2018, 22:40 | #49177 | Link |
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@ steakhutzeee:
No, absolutely not basically. "Exotic Interlacing" (originally by scharfis_brain in German, translated to English by StainlessS) lists a bunch of uses and abuses of different ways to norm-convert video. Not all of them can be repaired with satisfying quality anymore... |
22nd February 2018, 22:48 | #49180 | Link | |
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Intel i5-4590 - MSI R9 270X 2GB - 8GB RAM |
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Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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