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8th July 2014, 10:27 | #26821 | Link | ||||||||||||||||
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(1) Set the GPU to Studio=limited RGB=16-235. This will produce correct black and white levels, but it might introduce banding artifacts. (2) Set the GPU to PC Standard=full RGB=0-255. And at the same time set your display to 0-255, too! This will produce correct black and white levels and it will avoid banding artifacts. However, not all displays/TVs support this. Quote:
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However, something is going wrong there. My first guess would be that maybe you have some sort of 1dlut loaded through Windows calibration or something? In the madVR device setup under "calibration" make sure you have "disable GPU gamma ramps" checked. Does that help? If not, my next guess would be that either your receiver or your display is messing things up. It's possible that your Blu-Ray player output wrong levels. Or it's possible that your display behaves differently when receiving RGB input. Your Blu-Ray player probably output YCbCr. From the feedback other users are giving me, a properly configured HTPC seems to output correct levels using madVR. So if you get the very same 19-233 with two different GPUs, then the issue is very likely to either be a Windows configuration problem (the "disable GPU gamma ramps" option should work around the most likely such issue), or a problem outside of the HTPC. Quote:
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AFAIK, TVs with proper multi-refresh-rate abilities simply change the driving method to achieve different refresh rates natively. Which is a much better solution (if done properly) compared to madVR's smooth motion blending. |
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8th July 2014, 10:30 | #26822 | Link | ||||||||||||||
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Also check the madVR OSD (Ctrl+J) to see if any of the queues (which?) are getting empty when the glitches/issues occur. Which OS are you using? Quote:
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With the current state of AMD OpenCL drivers I'd recommend to turn this option off. Quote:
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michkrol's guess would also have been my best guess, that the frame drops are caused by the re-rendering of the frames when a fade is detected. If the tests suggested by michkrol confirm this, you could also try if increasing the size of the CPU and GPU queues fixes the problem. =============== I've recently moved to a new home which meant no time for madVR development. I'm now slowly getting back to development. But my commercial projects need some attention first. So don't expect a major new madVR version with new killer features soon. |
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8th July 2014, 13:33 | #26824 | Link |
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Then is there another explanation for why render times would be higher when a 1080p video is playing on a 1080p monitor full screen with settings like Jinc or NNEDI3 set compared to when that same video is playing on that same monitor at full screen with something like DXVA2 or Bi-linear set for a scaling algorithm like image upscaling?
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8th July 2014, 13:58 | #26825 | Link | |
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Ok so i tried several 1080p videos, VC1 and AVC with high bitrates and no presentation glitches, ofc i put bicubic 75 AR in Chroma also... Also, i turned Smooth motion on for some TV shows i have, even knowing i have 1080p 24hz, for TV shows is better 60hz, but with movies at 23.976, if i enable 24HZ should i use Smooth Motion? DO i need videoclock or reclock? TIA |
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8th July 2014, 14:13 | #26826 | Link | |
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and powerstates make rendertime unreliable too shouldn't apply to your case but i have normally higher render times with 1080p else with 720p on 1080p the powerstate with 1080p is lowest so the render time look higher. and are you sure your source is true 1080p and not cropped by 2-6 pixel? |
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8th July 2014, 17:26 | #26827 | Link | |
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And all of you guys with monster cards should read this: http://en.wikipedia.org/wiki/Folding@home#Biomedical_research Another question: LAV Video decoder is performing random dithering and MadVR is performing ordered dithering by default. So is there some kind of conflict? I canot disable dithering in LAV Video, so should dithering be set to "None" in madVR? |
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8th July 2014, 17:38 | #26828 | Link | |
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leave dither in MadVR active this option in lavfilter is not used ignore it. it's only used when YCbCr is transformed to RGB this is not happening with MadVR. and even when it is used MadVR should still dither at the end. |
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8th July 2014, 17:49 | #26829 | Link | |
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Killer the features will be nevertheless.
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8th July 2014, 19:20 | #26831 | Link | |
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If you leave smooth motion on "only if there would be judder" it will automatically turn off when watching 23.976fps @ 24Hz. Reclock will still help if you want to sync timings exactly but I stopped using it with madVR and I don't notice or measure any dropped or repeated frames (on a 60 or 72 Hz display). This might depend on your exact video clock(s) though. |
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8th July 2014, 20:11 | #26832 | Link | |
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The oos issues get worse when i watch 25fps TV shows on 50HZ, smooth motion is off but audio gets oos. |
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9th July 2014, 03:49 | #26834 | Link | |
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Although this TV set has the 960Hz backlit-strobe scanning + 240Hz native panel, however, I sometimes still found this engine's Clear+ motion interpolation handling is not perfect. For very few 24 fps contents moving scenes, back-and-force-flicking or ghost image could be still suddenly observed. |
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9th July 2014, 13:34 | #26838 | Link | |
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If you're using Media Player Classic Home Cinema make sure to rename the executable for it from mpc-hc.exe to something else like mpc-hc2.exe, mpc-hchd.exe, mpc-hcnv.exe (pretty much anything aside from the original name will work). Go into Nvidia Control Panel (I'm guessing you have an Nvidia/Intel system, but if that's not the case you'll need to go into the driver settings area for whatever GPU you have). Under manage 3d settings switch to the Program Settings tab. Select Add and navigate to your renamed mpc-hc file. Change the area under perferred graphics processor for this program to the High-performance Nvidia processor. Open a video. You should notice an improvement in your render times. Exit the video and open your registry. Navigate to HKEY_CURRENT_USER\Software\madshi\madVR\OpenCL if it has correctly detected your dGPU it should have it listed as a key inside that key showing its being used for OpenCL processes. If you don't see your gpu listed there post again and let us know, and we can give you instructions for creating a key that will force it to be added.
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System specs: Sager NP9150 SE with i7-3630QM 2.40GHz, 16 GB RAM, 64-bit Windows 10 Pro, NVidia GTX 680M/Intel 4000 HD optimus dual GPU system. Video viewed on LG notebook screen and LG 3D passive TV. |
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9th July 2014, 13:50 | #26839 | Link | ||||
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Not yet, but there's going to be a dedicated HT front projection room.
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madVR carefully checks the source and target resolutions and only does what is necessary. If no upscaling/doubling is needed, it is not performed at all. If you have higher GPU consumption with Jinc compared to Bilinear with a video that you think needs no scaling, there must be something wrong somewhere. Of course it could be a bug in madVR, but I rather think it's likely something else. Check the OSD to make sure source and target width/height *really* match perfectly. Quote:
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9th July 2014, 17:59 | #26840 | Link |
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One thing that was never all that clear to me, if I use NNEDI to scale above target (luma only), does it also always double chroma (with the image scaling option) or does it scale to output target directly?
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LAV Filters - open source ffmpeg based media splitter and decoders |
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direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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