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1st June 2016, 19:48 | #38201 | Link |
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MadVr with GTX 960 for x265 playback
Hi everyone,
First I would just like to thank @madshi for such a wonderful product. I've been using MadVR for a few years now, but never really dove too deep into the settings until recently. I did a search in this thread and read through the last 15-20 pages before posting, so I hope this hasn't already been covered. I upgraded my GPU to a GTX 960 a few weeks ago to specifically help with HEVC x265 playback. For non-x265 content, I am able to get smooth playback of 720p and 1080p sources to my 1080p plasma TV (Samsung PN64D7000) with MadVR rendering a fantastic picture. However, I am still having some issues playing back 1080p x265 content. I am can normally get smooth playback around 1200 kbps or under, but even in that range on some videos I get rendering times that jump well over 40+ on occasion. If I pause the playback (or even better, stop playback) and restart, the playback will be smooth for a while again. Higher bitrate x265 videos (2500 kbps +) will be well over 40-50 rendering times. Sorry for the long-winded post, but my main question is this... Is my CPU potentially bottlenecking the GTX 960? My understanding was that the 960 decodes x265 content without the processor, but I could be totally off-base on that. I do have a under-powered CPU (AMD A6-6400k) so I'm guessing that's the culprit, but before I invest in a better CPU and new motherboard, I would just like to make sure that my thinking is correct. Thanks guys! |
1st June 2016, 22:19 | #38203 | Link | |
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Screenshot below. Thanks again. |
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1st June 2016, 23:19 | #38204 | Link | |
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Set LAV Video to allow hardware acceleration with DXVA2 (copy-back) and check the checkbox for HEVC. This will prevent the CPU from decoding this format. Try this link for more detailed setup: http://forum.kodi.tv/showthread.php?...541#pid1843541
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HOW TO - Set up madVR for Kodi DSPlayer & External Media Players Last edited by Warner306; 1st June 2016 at 23:32. |
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1st June 2016, 23:51 | #38205 | Link |
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[QUOTE=Warner306;1769223]It sounds like hardware acceleration isn't functional.
Set LAV Video to allow hardware acceleration with DXVA2 (copy-back) and check the checkbox for HEVC. This will prevent the CPU from decoding this format. Try this link for more detailed setup: [URL="[/QUOTE] Thanks Warner. I've read a lot of your work in various forums over the past few months. Really appreciate it. |
2nd June 2016, 00:22 | #38206 | Link |
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[QUOTE=Warner306;1769223]It sounds like hardware acceleration isn't functional.
Set LAV Video to allow hardware acceleration with DXVA2 (copy-back) and check the checkbox for HEVC. This will prevent the CPU from decoding this format. Try this link for more detailed setup: [URL="[/QUOTE] Ok, so I think the problem is with Emby playback itself. Here is what I've found. My LAV Filters are set up to with HEVC checked and DXVA2 (copy-back). When I play a HEVC file with MPC and check the LAV Video Settings during playback, I will see the HEVC box checked. However, when I play back the same file in Emby using the MadVR rendering, the HEVC box is NOT checked. Checking the MadVR on-screen stats, I'll see that the average rendering time is around 11-12 ms, so plenty low. But the max render will jump to 50+ and sometimes 100+ ms. Very strange. Even when the average stays consistent around 12 ms, I still see dropped frames every few seconds. |
2nd June 2016, 06:42 | #38210 | Link |
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2nd June 2016, 12:50 | #38212 | Link |
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Hey!
Wrestling with my old laptop that I use as a HTPC (AMD Phenom II N930 2Ghz and AMD 5650m+4250 gpu), and after reinstalling windows 7 64-bit and updating mpc-hc and madVR (64-bit) to their latest nightly, I can barely get bilinear to work. Is there any change about performance in older rigs as mine from 89.x to latest? Or am I missing some requirement I am supposed to install (vcredist etc)? GPU-z shows that the clocks go up for 3D (550/800) and that the utilization is low (0%-20%), yet still I get "dips" in the queues occasionally and starting+switching to fullscreen results in around 20-30 dropped frames, no matter if exclusive or not. I am "forced" to use gpu-drivers from 2012 (Catalyst 12.4 to be exact) as I have a legacy GPU on my motherboard and AMD doesn't support them. So, is there any queue-tweaks or rendering tweaks I should take into consideration? I was happily running Mitchell-Netravali for luma and Bicubic 75+AR on chroma (as well as debanding) before on my laptop, though it was pretty loud occasionally. Another slightly off-topic question, does clock-speed affect temperatures if voltages stay the same? |
2nd June 2016, 15:45 | #38214 | Link | |
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Quote:
I'm getting smooth playback for 10 min or so and then it gets very choppy until I pause or stop the playback. Thanks! |
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2nd June 2016, 15:54 | #38215 | Link | |
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but i have no clue what type of content you are playing there. you are saying it starts after 10 min that could mean the CPU is thermal throttling or something unlikely like the file get's way harder to decode. could be power saving mode too or something like that. what so ever the frames are not delivered fast enough to madVR or it least that's what i see on the screen. |
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2nd June 2016, 22:23 | #38219 | Link | |
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Didn't you say MPC-HC was fine and Emby was not? Is Emby or your settings in Emby the problem?
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HOW TO - Set up madVR for Kodi DSPlayer & External Media Players |
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2nd June 2016, 23:35 | #38220 | Link | |
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Quote:
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Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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