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23rd July 2015, 18:35 | #32081 | Link |
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I do think the question of "which algorithm do studios/encoders most likely use to downscale footage" is an interesting question, since it will affect the look of what we're scaling and the usually unknown ground truth that we're trying to reach. I don't think it's likely to be Catmull-Rom LL AR if only because of madshi's anti-ringing algorithm - I'd imagine it would be either some form of Bicubic or Lanczos - or if they were going for a softer look maybe even Bilinear. Unfortunately that adds another variable to testing, and in the end you're just guessing.
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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) |
23rd July 2015, 19:15 | #32082 | Link | |
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23rd July 2015, 19:32 | #32083 | Link |
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In my home i am watching almost 1080p high quality rip movies on 1080p 80 inch Tv. What is your suggestions for this watching type? I am not using image upcaling, downscaling and image doubling.i have core i7 cpu and gtx 690
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23rd July 2015, 20:20 | #32084 | Link |
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Turn off every trade quality for performance tick box.
Pick something nice for chroma up scaling (nnedi3 is popular, but will make fan noise because it costs a lot) Use one of the error diffusion dithering methods, or ordered dithering if fans are too loud. Use smooth motion. Set up the 3D lut for your display of you have the means to. Play around with debanding and the source sharpener filters as you see fit. Make sure you don't get dropped frames by checking stats with ctrl j Enjoy. |
23rd July 2015, 20:36 | #32085 | Link | |
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23rd July 2015, 22:00 | #32086 | Link | |
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Profile: "1080p"
Use of Image Enhancements are completely up to personal taste as any additional sharpening can look artificial to many people. I have embraced sharpening mostly because I am trying to stay current with the latest madVR features. I'm not totally sold on the look, however. I would stay away from the SuperRes chroma filter. It is not nearly as useful as SuperRes when used from Upscaling Refinement.
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HOW TO - Set up madVR for Kodi DSPlayer & External Media Players Last edited by Warner306; 23rd July 2015 at 23:13. |
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23rd July 2015, 23:12 | #32087 | Link |
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Now that Kodi DSPlayer has integrated low latency mode, I have noticed a new issue. I believe this addition has made 1080p60 playback a little stuttery with some noticeable blurring on moving objects. It is subtle, but I cannot detect the same problem at 1080p24.
I have switched between MPC-BE and DSPlayer at 60hz and find DSPlayer is now less smooth - the blurring on objects being particularly noticeable. Was 3/2 pulldown properly tested when low latency mode was added? Something does not look right at 1080p60 when played through DSPlayer.
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HOW TO - Set up madVR for Kodi DSPlayer & External Media Players Last edited by Warner306; 23rd July 2015 at 23:54. |
24th July 2015, 00:11 | #32088 | Link | |
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24th July 2015, 00:19 | #32089 | Link | |
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SuperXBR is being actively developed like Warner mentions, and is a very cheap alternative to nnedi3 that still looks almost as good. Many people here would probably say that it's 2nd place for the best quality upscaler. You can play with the sharpness of that algorithm a bit as well. I find 150 can cause reds to pop unnaturally in a scene and use 100 instead, but it's basically whatever you think looks best. Sharper is noticeably better for animated content. You can try out all the image enhancements for yourself easily by pausing a video, then turning on/off the settings to see what they do. It's all personal preference, so you need to see for yourself and come up with a combo that you find pleasing. As a very general overview: Finesharp enhances details and artifacts in the source. It can look good with exceptionally clean sources, but has a tendency to bring out ringing, blocking, and other artifacts (which are inevitable with almost all formats of compressed video with sane bitrates). Lumasharpen is similar to what some games use for edge sharpening. It's a different look compared to finesharp. You might like it, you might not. Adaptive sharpen tries to sharpen details more than artifacts in the source. In practice, it introduces some artifacts of its own sometimes. Again, try it yourself to see if it improves the image in your opinion. Personally I use none of these and prefer a "purist" approach where I try to reproduce an image accurately instead of favoring heavy processing like sharpen filters. |
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24th July 2015, 00:39 | #32090 | Link | |
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24th July 2015, 03:51 | #32091 | Link |
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Not able to change to NNEDI3
In build 88.20 when i am selecting NNEDI3 in chroma upscaling,it is showing JINC in OSD.Previously If i select NNEDI3 in chroma or image doubling MADVR crashes,but now its not crashing but shows JINC in OSD instead of NNEDI3.But it shows super-xbr,NEDI when i select those.I am on windows 10 build 10240.Nvidia driver 353.53 Geforce GTX 980.
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24th July 2015, 08:09 | #32092 | Link |
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I'll assume NNEDI3 has never worked for you on (this installation of) Windows 10.
You are probably missing OpenCL, so I'd recommend installing drivers directly from nvidia's website. The newest I could find is a hotfix: https://forums.geforce.com/default/t...eased-7-8-15-/ |
24th July 2015, 09:54 | #32094 | Link |
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Thats expected, madVR now keeps drawing the frame while paused.
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LAV Filters - open source ffmpeg based media splitter and decoders |
24th July 2015, 11:56 | #32096 | Link | |
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It may have clocked down and show a high utilization. But ultimately madshi will have to comment on what it really does in pause mode.
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LAV Filters - open source ffmpeg based media splitter and decoders Last edited by nevcairiel; 24th July 2015 at 11:59. |
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24th July 2015, 12:13 | #32097 | Link | |
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The nvidia site has 353.30 version as latest build.I was on that version.Same problem was happening.But yesterday i got a new display driver update from windows update.now the version is 353.50.But same problem still exists. |
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24th July 2015, 13:25 | #32099 | Link |
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@SecurityBunny
No debanding. Error Diffusion 1 opt1+2 for 1080p ; Ordered Dithering opt2 for other sources.
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24th July 2015, 14:20 | #32100 | Link | |
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my point is that I am questioning this method of sclaling into the other direction first and then getting back to the original size of the image, because we dont know in how far the result of the first scaling process might influence the result of the 2nd one, the one we want to look at. you wouldnt have this problem when directly applying the scaling process you want and compare from there.
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Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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