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25th October 2017, 19:18 | #46843 | Link | |
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25th October 2017, 19:56 | #46844 | Link | |||||||||||||
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If you do sit "close enough", then a 1080p Blu-Ray upscaled to 4K with madVR should look better than using a 1080p display. How much better will depend on the exact viewing angle, the quality of the 1080p Blu-Ray (the higher the better) and the sensitivity of your eyes. Quote:
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Hmmmm... That's pretty weird. It's a crash in the OS "DXGI" dll. Don't know how to solve this right now. But it only occurs if you suspend/resume your PC, right? In that case I don't consider it crucially important right now, to be honest... Last edited by madshi; 25th October 2017 at 22:10. |
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25th October 2017, 21:05 | #46845 | Link | |
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25th October 2017, 21:26 | #46846 | Link |
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What I said is a scientific fact. I explicitly talked about displays with "perfect fillrate", though. In real life no display has a perfect fillrate, so it's not as clear cut in real life as it is in theory. Still, if a 1080p display and a 4K display have identical properties (other than resolution), there's no way the 1080p will be able to compete with the 4K display, if you use madVR quality upscaling.
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25th October 2017, 23:56 | #46849 | Link |
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Thanks, I haven't heard back from him, I'll post in the LAV thread if he doesn't reply here.
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26th October 2017, 08:25 | #46851 | Link | |
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sorry but if you didn't touch the image you can't do anything wrong. i'm not here to say that your scaling algorithms are bad or something they are the best i'm aware of by a big margin. |
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26th October 2017, 08:29 | #46852 | Link | |
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High Quality scaling algorithms improve the image substantially, if you can see this difference depends on the size of the screen and your eyes. At a sufficient size, a 4K screen with upscaled 1080p content will most definitely look better then a native 1080p screen (of the same size). What this size is depends on your eyes and viewing conditions.
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LAV Filters - open source ffmpeg based media splitter and decoders |
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26th October 2017, 08:31 | #46853 | Link | |
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Stop anything else from stealing the subtitle interface away, or wait until madshi implements support for multiple providers. Or just disable hardware decoding for DVDs, it has its own DVD checkbox for a reason, and SD MPEG2 is hardly a challenge to decode.
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LAV Filters - open source ffmpeg based media splitter and decoders Last edited by nevcairiel; 26th October 2017 at 09:15. |
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26th October 2017, 09:03 | #46854 | Link | |
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will a UHD screen look better or least least similar to a 1080p screen when all other specs are identical. i'm pretty sure it is yes for the majority can it make things worse yes and not only in special cases. |
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26th October 2017, 10:05 | #46855 | Link |
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I don't know. Image processing can do wonders for bad sources, I agree. For good sources I think that not touching anything, by default, provides the most faithful result.
Then again, maybe what you are saying, madshi, is that since the aim of the original source is to reproduce reality (or whatever is being filmed), doing so at an higher resolution provides better results, even when upscaling? So far I've always seen better results with content at native resolution for the panel being used. But my experience is seriously limited. And in no way I meant to disparage the incredible job your scalers do (especially NGU). |
26th October 2017, 11:00 | #46856 | Link |
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I definitely prefer watching 1080p content on a 4K display. There is content, like pixel art or fine very high contrast details, that gets damaged by scaling but for almost everything I watch scaling it to 4K looks a lot better. Some people don't mind aliasing at all though so for them the lower native resolution often looks better and it is only recently that preserving the sharpness so well through scaling became possible.
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madVR options explained |
26th October 2017, 11:12 | #46857 | Link | |
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If you upscale the same 720p to 1080p with a decent algorithm now there's a much smoother (imperceptible) transition between those pixels. It essentially makes better use of the available information. Unless you use nearest neighbor (or something equally primitive), it's pretty much guaranteed that you'll have a better looking image. Last edited by mzso; 26th October 2017 at 11:14. |
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26th October 2017, 11:49 | #46858 | Link |
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did you may miss this part: https://forum.doom9.org/showpost.php...ostcount=46872
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26th October 2017, 12:18 | #46859 | Link |
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Madshi is right that viewing distance is also a very important factor. Personally I'm on a 65inch at a viewing distance of 3m. I can see the difference between 1080p and 1080p upscaled to 2160p with madVR. I have to be careful here though because my TV is 2160p native resolution and is probably doing its own internal scaling from 1080p to 2160p when I set a 1080p resolution.
One cannot underplay either just how much the added colorspace and bitdepths of new 2160p panels can improove picture quality over 1080p without relying solely on 4x resolution either. Last edited by Razoola; 26th October 2017 at 13:44. |
Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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