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30th August 2017, 02:48 | #22142 | Link |
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There shouldn't be a quality difference in any of the decoding types. It's likely the benefit is resource utilization.
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30th August 2017, 03:25 | #22143 | Link |
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DXVA native with nvidia cards can result in quality loss if it is used with madVR for example. D3D11 doesn't have this problem.
on top of it D3D11 supports headless mode which is very useful for PCs that have a iGPU with very good codec support and a dGPU with not that good codec support. |
30th August 2017, 03:30 | #22144 | Link |
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Well that's good to know about headless. I see I've been away from these things too long. LOL. D3D11 support seems very good to me in my latest tests with my new 1060. I had no issues with 3D playback which is awesome.
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30th August 2017, 10:13 | #22145 | Link | |
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What I am doing wrong? |
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30th August 2017, 10:23 | #22148 | Link | |
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30th August 2017, 13:40 | #22151 | Link |
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with D3D11 native deinterlancing is job of the renderer and madVR doesn't support deinterlancing with d3d11 yet.
d3d11 copyback should work with lavfilter software deinterlancer just select the GPU and you will get copyback. |
30th August 2017, 16:53 | #22152 | Link |
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i have a problem with cpu usage.
i use dvbviewer with lavfilters vid dec and ffdshow raw filter for subtitling. when i playback x265 stuff (720p 10bit), cpu usage is normally around 20%. but sometimes it goes up to 50%. then i have to do a graph rebuild and it is @ 20% again. with x264 i never had such a problem. |
31st August 2017, 07:55 | #22153 | Link |
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Sounds to me like at some point, an additional filter gets enabled which was not active before, or the rendering process was forced to switch to a compatibility technology from this moment on. Just guessing though...
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1st September 2017, 13:19 | #22155 | Link | |||
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1st September 2017, 16:15 | #22156 | Link | |
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i tried d3d11+software deinterlacer, and videos that plays60fps now plays at 30fps. with dxva cb+software deinterlacer and cuvid, it plays 60fps |
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1st September 2017, 16:34 | #22157 | Link |
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You can't use software deinterlacing if you use D3D11 native mode. If you use d3d11 copy-back (by selecting a specific decode device), it should behave just like dxva2 cb.
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1st September 2017, 16:44 | #22158 | Link |
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ah, . i miss them. didnt know theres that option.
cheers. edit: weird, after choosing hardware device, i play video and there they are, playing at 60fps, then screens blinking a couple of times and d3d11 revert back to automatic and fps turns back to 30fps. edit2: it seems even without playing video, for instance, closing mpc-hc after applying the chance, revert them back to automatic Last edited by takenori; 1st September 2017 at 16:54. |
2nd September 2017, 05:12 | #22160 | Link |
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It's because of the bugs in x264 4:4:4 (incl. lossless profile). LAV has a compatibility mode for them but it needs to read the x264 custom SEI so it knows a) the file was encoded with x264 and b) which version was used. The SEI is usually only prepended to the first GOP and not in CodecPrivate so that's just how it is with those files. (Same if you split them.)
https://git.videolan.org/?p=x264.git...2bba3de4ba2d1a https://git.videolan.org/?p=x264.git...22689220c767b5 https://forum.doom9.org/showthread.p...93#post1809393 Last edited by sneaker_ger; 2nd September 2017 at 05:14. |
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decoders, directshow, filters, splitter |
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