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4th December 2012, 23:13 | #15961 | Link | |
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TV Setup: LG OLED55B7V; Onkyo TX-NR515; ODroid N2+; CoreElec 9.2.7 |
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4th December 2012, 23:14 | #15962 | Link | |
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Well, at least now you have something to report to Mosu. It's a clear bug, IMHO. |
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4th December 2012, 23:31 | #15964 | Link | |
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Hopefully fixing that will solve both the AAC and AC3 file issues, otherwise you'll be getting another set of samples soon!
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TV Setup: LG OLED55B7V; Onkyo TX-NR515; ODroid N2+; CoreElec 9.2.7 Last edited by DragonQ; 4th December 2012 at 23:33. |
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4th December 2012, 23:51 | #15965 | Link | ||||
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SoftCubic on the other-hand, desaturates and blurs Chroma, often causing it to bleed out the edges of things. SoftCubic 100 is the exception where it might work well in cases of extremely bad Chroma, but so far I have only been able to collect two samples of that, and all algorithms but SoftCubic 100 and Jinc 8 AR fail with them to equally bad levels. The problem there is the source. (I wonder if there was some version of a commercial encoder that did something wrong with Chroma) In most cases, I think Bicubic 75 is the safest bet, and is also a clear improvement over Bilinear as used for Chroma elsewhere. I can find many more examples where SoftCubic 100 looks bad (most of them!) than ones where Bicubic 75 is a poor choice. Quote:
Using the same material and scale factor as I did last night, where Bicubic 75 Chroma & Lanczos 3 AR Luma are at 88ms, switching to Lanczos 4 Luma drops render times to 58ms, so it's still a big difference. It just seems that the anti-ringing filter and linear light downscaling are both big performance hits on lower-end hardware. I thought I could maybe get away with using the anti-ringing filter for Chroma, as the performance hit seemed minimal at or below 720p, but it became a much bigger hit at 1080p. Downscaling in linear light using Catmull-Rom AR is still the biggest performance hit on my system though. It has roughly 35ms render times (1080p at 50% size) and would constantly drop frames before I overclocked my card. Upscaling 720p30 or 576i DVDs are roughly 30ms with Bicubic 75/Lanczos 3 AR. At the factory speeds, I was unable to get smooth playback with these settings, and had to overclock the card. I think that Bicubic 75 Chroma, and either Mitchell-Netravali (low performance requirement) or Spline/Lanczos 3 (medium performance requirement) would be your best choice for Luma upscaling. For Luma downscaling, I would have to do more testing, but I think that Catmull-Rom without the AR filter or Linear Light option is probably still the best choice to have a sharp image without a lot of ringing or aliasing. Quote:
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I've been seeing this as well, and I just use the standard BT.709 primaries as my gamut, only using yCMS to fine-tune the gamma response on my display. I'm not sure when it happened (whether it's recent or not) as there was a long time where I was not using yCMS. |
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5th December 2012, 01:02 | #15966 | Link | |||
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for the new build!
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Only tried 0-255 RGB32 so far but I would guess that 16-235 YV12 would work equally well. I'm now more than ever eagerly awaiting the next build of PotP Quote:
The custom levels hotkeys are great news though, but pressing the same hotkeys 20/30 times in a row(for really broken encodes) doesn't really sound too manageable Quote:
PS: oh BTW, it seems that some ppl can't really stand 48p after all. Last edited by leeperry; 5th December 2012 at 03:31. |
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5th December 2012, 01:49 | #15968 | Link |
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I LOVE YOU madshi !!!!!!!!!!!!!!!!!!!!
* added options for custom display output levels Thanks so much for this option..i always had probs with the standart ranges on my hdtv, now with custom settings (10 - 255) its PERFECT.. madvr is now the best renderer out there for me..nothing can beat it in tearms of quality, functionality and more.. Thanks so much madshi... -BetA- |
5th December 2012, 02:08 | #15969 | Link | |
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In any case, thank you very much for your continued work on this! |
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5th December 2012, 03:44 | #15970 | Link | |||
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But the revised controls seem good, and I need to check out the input/output levels options. (though I shouldn't have to change the output levels from 0-255) This seems to work well - the colour matrix is correct for up and downscaling with DXVA2 now. There is some minor colour shifting left though. With this overscan pattern, 128,128,128 becomes 129,128,130 for example: DXVA2, Lanczos 3 AR You will also see that there's still some of the sides being cropped off. However, I still don't find DXVA2 to be much use on Nvidia. It's basically Bilinear scaling with a sharpening filter applied, and render times are still very high for how it looks. With 1080p at 2x, I get 6ms for Bilinear Chroma & Luma. With DXVA2 I get a large spike at the start of playback (over 1100ms) and then it settles at 56ms. DXVA2 also has worse image quality than Bilinear Luma & Chroma in madVR due to the increased ringing and aliasing from the sharpening used. With 1080p at 2x, I can run Bicubic 75 AR Chroma with Lanczos 3 Luma at 37ms total, or with Mitchell-Netravali Luma for 27ms. Quote:
From a two minute sample clip: DXVA2 N: 84% GPU, 72% MCU, 24% VPU peak usage. DXVA2CB: 83% GPU, 71% MCU, 20% VPU peak usage. So it's not identical, but the difference between them is much smaller now. Quote:
Before, After There have also been a few films I've come across from a particular group that, rather than being black and white, are encoded with a blue tint, that saturation controls can easily fix: Before,After I don't think I have any examples to hand, but there have definitely been one or two films in the last year that I've seen where a slight gamma bump would be useful. (-contrast in the new controls) I'm not saying that I recommend it. In fact, I bet it would do very poorly in some tests. It's just that with bad chroma samples - of which I have two out of all my testing so far - Jinc 8 and SoftCubic 100 are the only two algorithms that "pass". |
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5th December 2012, 04:22 | #15973 | Link | |
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5th December 2012, 04:24 | #15974 | Link | |
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In this case, yea, I think film mode would be appropriate, but I can't get it to work without changing the fps to 50p. Do I have to turn off deinterlacing first? |
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5th December 2012, 07:17 | #15976 | Link | |
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With madVR Bi-linear Luma option, there is frame dropping when the interlaced HDTV content is played. |
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5th December 2012, 07:46 | #15977 | Link |
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some questions
@madshi Thanks for the new version!
I have some questions: 1-The "device controls" colour ,brigthness , etc appear grey and do nothing, I'm I missing something? 2- Where can I find the names for "special" keys to use in shortcuts? the keystrokes are not detected I must write them |
5th December 2012, 08:24 | #15978 | Link |
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Join Date: Feb 2012
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Is it normal for madvr to make your GPU usage shoot up intermittently while watching a video? Like, say I get 30 minutes of smooth playback, and then out of nowhere my GPU usage jumps up to 99% and madvr starts dropping frames every which way. I can't seem to pinpoint the "type" of video it does this too either. It just seems random. If it matters, I'm having this problem on both my GTX 460 and my Intel HD3000 (Jinc4 on the former and Spline3 on the latter).
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5th December 2012, 09:55 | #15980 | Link |
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Join Date: May 2007
Posts: 8
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Thank You madshi for all of your work.I have one feature request.Can you please add an option for custom Gamma correction like you did for brightness and saturation.Maybe something with slider or something like ffdshow or potplayer.
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Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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