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10th October 2013, 12:49 | #20282 | Link | |
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10th October 2013, 13:00 | #20283 | Link | ||||
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a 7950 is a total over kill but do as you please. |
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10th October 2013, 13:12 | #20284 | Link |
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Thanks for your reply huhn.
Ok. So no need in lav to specifically DISable any of the checkboxes? Can you point me in the right direction for the nvidia tweak? You told me my Intel card transforms to ycbcr which is bad. So i just picked up a amd for this reason. Also, there has been too many reports about problems with the FULL/LIMITED output of Intel and I just want to be sure all works fine. |
10th October 2013, 13:12 | #20285 | Link |
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I was using LAV Video, yes. But LAV+EVR works fine, it is only the combination of LAV+madVR that does not work correctly. That to me says it's a madVR problem, especially as you have had to fix menu issues with madVR in the past. I know people have provided DVD menu samples here on Doom9 in the past, I just don't know how they do it.
Last edited by romulous; 10th October 2013 at 13:14. |
10th October 2013, 13:32 | #20286 | Link | |
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10th October 2013, 14:04 | #20287 | Link | |||||
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With DVB content and madVR default settings, are those combing artifacts perfectly reproducable? Do they happen the same way at the same frame, every time you try? Or do they change? If you can perfectly reproduce such problems, it would be helpful to get a sample, so that I can look into it. I'm not sure if the source filter can have an effect on deinterlacing. Normally I would expect the video decoder to decide, in combination with the video renderer. But I only see this from the view point of the video renderer, so I don't know for sure whether the video decoder might behave differently, depending on what the source filter might do. It might make sense to double check this with a different source filter. Or to make it easier, with MPC-HC, just to double check whether it's a problem with madVR or something else... Quote:
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Thanks! P.S: The Aspect ratio is good that way, if you would correct it, the blocks wouldn't be 8x8, anymore. |
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10th October 2013, 14:24 | #20288 | Link | |
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http://imageshack.us/a/img34/2682/qmn.png http://imageshack.us/a/img268/5052/k8sk.png |
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10th October 2013, 14:36 | #20289 | Link | ||
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there is a file called madNvLevelsTweaker.exe in the madvr folder just use that. |
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10th October 2013, 14:48 | #20290 | Link |
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I thought that that tool is only for nvidia.
What is THE best PQ algorithm to use for 1080p when sending out 1080p to my projector? (I ll stay with 1080p outputting for now and let my vw1000 do the 4k upscaling) |
10th October 2013, 15:29 | #20291 | Link | |||
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Here are my observations: I use MPC-HC (to rule out issues with my own software), on an AMD graphic cards (fairly old on my dev machine a HD 4600) on Windows 8.
So there is a little issue here with deinterlacing when using madVR because I cannot choose a settings in madVR or LAV that will work for everything and use DXVA interlacing. The same thing happens when I use my own software (which doesn't set any interlaced information on the media type, as I don't use a VIDEOINFOHEADER2 at all, I only set the avg frame rate) Quote:
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10th October 2013, 15:37 | #20292 | Link | ||
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Last edited by huhn; 10th October 2013 at 15:39. |
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10th October 2013, 15:58 | #20294 | Link | |
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Thanks, these should help.
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(1) Maybe deinterlacing is not activated, for some reason? Please activate the madVR debug OSD (Ctrl+J). It should tell you whether deinterlacing is active or not. If it's not active, you can force it active by pressing Ctrl+Alt+Shift+D multiple times. (2) Maybe the field order is detected incorrectly? You can change it by pressing Ctrl+Alt+Shift+F. (3) Maybe your GPU is too slow for the settings you've chosen? In the madVR debug OSD look at the number of dropped frames. Does it increase all the time? If so, try using "Bilinear" for chroma and image scaling as a quick test. If the problem is not any of these things, maybe you can upload a sample for me to look at. Actually, unlike Intel and NVidia, AMD usually offers a limited/full switch in the GPU driver control panel. So AMD does this better than NVidia and Intel, and that's why the madNvLevelsTweaker tool isn't even needed for AMD users. I think the switch is called "pixel format" or something like that. Set it to full range (0-255) or whatever it is called. |
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10th October 2013, 16:42 | #20295 | Link | |||
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When I use Nearest Neightbor / Bilinear nothing changes : video stutter badly and madVR reports dropped frames (GPU load 70%), but it doesn't feels like dropped frames. When I use DXVA2 : video is fine (GPU load 40%) When I use anything from Mitchell-Netravali to SoftCubic : video is fine (GPU load from 50% to 90%) When I use anything from Lanczos to Spline : video is not fine (GPU load 90%++), though I think it's because the GPU is clearly overloaded (it looks like normal dropped frames) Changing chroma upscaling does nothing. Note : Deinterlacing add approx. 40% of GPU load. So GPU load explains some of it. Though I do not understand why the video IS deinterlaced even if I turn off deinterlacing in madVR (I can confirm that the video is interlaced)... It's confusing to say the least...
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10th October 2013, 17:32 | #20297 | Link | |
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I load the video into VLC and disable any deinterlacing in VLC and I see comb effect.
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Note : if I set deinterlacing mode to Disabled (progressive) in LAV it doesn't change anything for H264 HD (they seems deinterlaced), while for MPEG2 SD video are not deinterlaced when played back Oh and I can also confirm that there is no other filters in the graph that would deinterlace without notice (graph = source / splitter / video decoder / renderer)
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10th October 2013, 17:51 | #20298 | Link |
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Probably VLC is doing something weird/wrong then? I don't know. Normally if a clip looks clean with deinterlacing turned off, that means that it's a soft-telecined movie file. I can look at this, if you want. If so, just upload a small sample with which I can reproduce the combing with VLC. Then I can tell you what's going on with that file.
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10th October 2013, 18:28 | #20299 | Link | ||
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So the only confusing thing really is a combination of factors : LAV settings that makes you think hardware deinterlacing is not possible with AMD GPU, and the fact that even with bilinear the problem seems to be with the deinterlacing (wether the content is really interlaced or not). What difference there is between bilinear and softcubic ? Are they applied at a different time in the rendering pipeline, that may explain what I'm seeing.
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10th October 2013, 19:12 | #20300 | Link |
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I'm not sure why you would have problems with bilinear but not with SoftCubic. Usually it's the other way round. Bilinear is ultra-cheap, SoftCubic consumes quite a bit more resources. So something is weird here. Have you been testing in windowed mode or in fullscreen exclusive mode? The latter is usually more reliable...
Could it be possible that you changed the scaling settings to bilinear in the wrong section? E.g. you changed it for upscaling instead of downscaling or something like that? A stupid question, I know, but I don't remember any other user having reported anything like this in the last couple of months. Usually bilinear (or nearest neighbor) has always worked better on slow GPUs than anything else, according to anything users have reported so far. |
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direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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