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21st August 2013, 10:53 | #19901 | Link |
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RGB is only 444
see what happens: madVR outputs RGB 444 video driver passes RGB 444 as is Panny TV converts RGB 444 to YCC 422 processes it and converts YCC 422 back to RGB 444 (TV's matrix is RGB) My suggestion: madVR outputs RGB 444 video driver converts RGB 444 to YCC 444 Panny TV accepts YCC 444 as is processes it as is and converts YCC 444 back to RGB 444 RGB 444 to YCC 444 convertion is more accurate. |
21st August 2013, 12:01 | #19902 | Link | |||||||||||||||||||||
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What you could do is use madVR's brightness and contrast controls to adjust the image when the ambient light level changes. madVR's brightness control actually modifies the gamma value and madVR's contrast control modifies the form of the gamma curve. So if you find the image too washed out when there's no ambient light, or if you find shadow detail to be eaten away by high ambient light levels, just use the brightness/contrast controls to do small adjustments... Quote:
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madVR does use dithering, but that's just a low level noise floor covering the image. That's very different from banding/posterization. Quote:
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If you want to know whether Smooth Motion FRC works alright, you can test this with any 24p Blu-Ray. The IVTC processing itself should work correctly, if it reports 3:2 and no cadence breaks and if you don't see any combing artifacts. The best idea might be to upload a small sample for me to look at. You could also cross check with the DScaler IVTC Mod. Quote:
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Of course generally 120Hz should also produce smooth output. Are you using fullscreen exclusive mode? Does the madVR OSD (Ctrl+J) report any frame drops, delayed frames or presentation glitches? For 120Hz you might want to increase the size of the GPU queue and the number of backbuffers / pre-presented frames. Quote:
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There are 2 new problems you're getting when using YCC 444 output with your GPU: (1) You can only hope that the RGB -> YCbCr / YCbCr -> RGB matrixes used by the GPU and the display are identical. If they're not, colors will get screwed up. (2) If the GPU converts the madVR RGB 444 output to YCC 444 behind madVR's back, it *probably* does so without dithering in 8bit. I don't know for sure, maybe some newer GPUs do this in a higher bitdepth if the display supports DeepColor. But I somehow doubt it. Converting RGB to YCC without dithering in 8bit is lossy and can introduce banding artifacts. |
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21st August 2013, 13:31 | #19903 | Link | ||
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21st August 2013, 13:41 | #19904 | Link |
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The text you've quoted seems to suggest that in "1080p Pure Direct" mode 4:4:4 is fully supported ("the chroma resolution did increase"). I don't see any evidence in your quote that RGB would be downscaled to 4:2:2 while YCbCr 4:4:4 would not.
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21st August 2013, 19:50 | #19907 | Link |
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can someone plz try out lanczos 8 ar with an gtx 760 and/or windows 7 overlay mode and report back?
in the same pc my hd4000 works totally fine so i don't think reinstalling the hole pc can fix this. on top of this windows 7 overlay outputs a black screen. this happens with every video. i just notice this with the d-fend recording. |
21st August 2013, 21:53 | #19908 | Link |
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When forcing ivtc on any file with deint=ivtc in the file name does Potplayer show very bad artifacts, almost to the point of being unwatchable, for others?
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PC: FX-8320 GTS250 HTPC: G1610 GTX650 PotPlayer/MPC-BE LAVFilters MadVR-Bicubic75AR/Lanczos4AR/Lanczos4AR LumaSharpen -Strength0.9-Pattern3-Clamp0.1-OffsetBias2.0 |
22nd August 2013, 01:56 | #19909 | Link |
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Hi, I'm trying to calibrate a Samsung LED 4200 series HDTV with PC attached using latest Argyl and dispcalGUI until new replacement monitors arrive and I'm getting posterized shadows viewing after calibration.
Settings I've used are 6500k, 80 cdm, rec709 gamma. The result is quite a milky bright flat output in a dimmly lit room. Any advice, should I be using sRGB curve or setting a 2.2, 2.4 gamma specifically or is my black point way out? Not sure how I should be setting and balancing between backlight, contrast and brightness. dispcalGUI has only asked me to adjust RGB gains to get the channels aligned in its gui and hit the 80 cdm. Didn't have this problem with my CRT but it's just packed up. :-( Last edited by Yellow_; 22nd August 2013 at 02:12. |
22nd August 2013, 07:12 | #19910 | Link |
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In this thread, specifically this post you'll find madshi's recommended params for calibrating with Argyll which worked well for me.
EDIT: added a link to madshi's actual post Last edited by dansrfe; 22nd August 2013 at 10:14. |
22nd August 2013, 10:08 | #19911 | Link | |
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would you, please, add a link to your recommended lines in the first post of the current thread? This will make it a lot easier for beginners in calibration like me. I've been reading the 4:2:2/4:4:4 discussion lately and when I did the test I was sad to see that my two projecors (EPSON TW2000 and TW9000) are both using 4:2:2 when in 1080p24 mode while maintaining 4:4:4 mode when using 1080p50/60 modes. So I'd like to ask the community here including you madshi which would you consider the lesser evil for wathcing 24p content (Blu-ray movies) - the cut down chroma channel or the ghosting and other potential artefacts when using Smooth Motion FRC at 1080p60?
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22nd August 2013, 10:22 | #19912 | Link | |
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Windows only supports one overlay per monitor. If some other software is already using overlay, madVR might show a black screen. That's something on my to do list, to check for this problem and automatically use normal windowed mode instead of overlay, if somebody else is already using overlay. However, I wonder how likely it is that somebody else is already using overlay on your PC. Maybe media playback in your browser? Maybe it's more likely that it simply doesn't work at all on your PC, for whatever reason...
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Try both and let your eyes decide. The cut chroma channel might not be a big problem if all you're doing is 4:2:0 video playback and if the display is using a "good" algorithm to upsample chroma again to 4:4:4 after all the other processing is done. On the other hand, personally, I don't see any ghosting artifacts with Smooth Motion FRC. I'm still not convinced that those users who see ghosting are maybe using displays which have a different internal refresh rate or a scanning backlight which runs at a different refresh rate, or whether something might go wrong on their setups... |
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22nd August 2013, 19:18 | #19913 | Link |
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Is there a keyboard shortcut possible for showing the time bar in exclusive mode? I m using a Logitech HR with MPC-BE and madVR and would like to be able to see this time status bar when pressing a button (I can config this with my Logitech HR, an IR receiver and Eventghost)
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22nd August 2013, 20:55 | #19914 | Link | |
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PC: FX-8320 GTS250 HTPC: G1610 GTX650 PotPlayer/MPC-BE LAVFilters MadVR-Bicubic75AR/Lanczos4AR/Lanczos4AR LumaSharpen -Strength0.9-Pattern3-Clamp0.1-OffsetBias2.0 |
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23rd August 2013, 08:46 | #19915 | Link | |
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23rd August 2013, 12:01 | #19916 | Link |
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Hello all, first post here!
One question: I've a 2600k and a 7870. Now, I have my out usually set to the onboard gfx to save power and it fires up the 7870 when needed via virtu software. My question is, how can I set madvr to use the 7870 for acceleration when the output is set to my onboard? |
23rd August 2013, 13:15 | #19917 | Link |
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I notice something strange, but very subtle and hard to spot while playing HD content.
Everything seems to play buttersmooth, but during specific tiny movements (typically a slow moving object in the distance or background) I notice some stutter, exclusively focussed on that object. it's like the object jumps from one place to the next (but very subtle) and there are some frames missing in between. But even during these moments, all other motion and all other objects of the image are perfectly portrayed. The statistics also show no frame drops whatsoever. My best guess: some motion detection algorithm is playing the wrong tricks? Specs: AMD Radeon 7770 Intel i5 HDMI-out to Panasonic 55VT60 MPC-HC+Madvr+Lav (hi settings focussed on quality) |
23rd August 2013, 13:20 | #19918 | Link | |
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And as you just said, isn't 4:2:2 more than enough when YV12 is 4:2:0 anyway? And also if the display itself only takes 4:2:2 input, wouldn't that make sense to convert chroma in mVR to 4:2:2 instead of 4:4:4? I presume that a 4:2:2 display will process an averaging lossy conversion anyway.....most likely from the computer's RGB32 to 4:2:2 YCbCr and then back to RGB The ideal scenario would be to output 4:2:2 YCbCr from the computer, but the latter is more than likely processed in 8bit from RGB32 and that'd open the can of decoding matrix worms Last edited by leeperry; 23rd August 2013 at 15:16. |
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Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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