Dxva2 native vs copyback It's just that DXVA2 Native seems to be the default option (at least for K-Lite) and end-users shouldn't have to dig deep to fix this with a similar set-up. There is no benefit in using D3D11 if you use copyback mode @clsid2 I'm aware ffdshow doesn't support HEVC\H265 as I have already stated in my post. Firstly, you need to check if your video cable is incorrectly connected to any interface near the CPU on the motherboard, as this interface belongs to an integrated graphics card interface, which can cause your monitor to directly use For DXVA2 Native there are additional requirements: You must use one of the following video renderers: EVR Custom Presenter, EVR Sync, EVR, MPC Video Renderer, or madVR. It has an 11th gen i5 2. D3D9: Auto Need help choosing between 2 available mobos, old AM3+ socket comments. mp4 -map 0 -c:v libx264 -crf 18 -vf format=yuv420p -c:a copy output. Follow edited May 23, 2017 at 11:47. 2 soon. I did have hardly any frame drops in the past with the MS decoder and a 1360x768 screen A very interesting feature for those who, like me, have a 21: 9 aspect ratio screen, is the automatic detection of black bars. Then in DXVA2 native mode the same result. So, I tried using standard DXVA: If I try using Native DXVA in PP, it doesn't work, and the codec being used is the built in FFMPpeg codec: If I enable DXVA Copy Back mode, it then works: This is with the built in FFMpeg decoder. - DXVA2 (copy-back): GPU via DXVA2 API; Every. Note that the way you select Native/Copy-Back for D3D11 is DXVA2 (copy-back): Can be used by any hardware that supports DXVA2 (Intel might have some issues with VC1 video). ) but no difference observed. Click on the program listed, click on Options and then you could choose what DXVA2 or d3d11 native will work just fine. 1 1 1 silver badge. For the RIFE support Click Built-in codec/DXVA settings and in the window opened check Use DXVA and Use DXVA2 Copy-Back Mode. 1. That's what you would want for "playback The closest performer is dxva2 native but with its obvious flaws. CUVID may or may not start working again correctly with future LAV/Nvidia SDK/Nvidia driver/OS The artifact seems to be an issue of DXVA2, I switched to D3D11 in LAV and it disappeared. NVIDIA CUVID + Reply to Thread. Though still don't understand why there is a difference with MPC-BE. 28 software (FFDshow, LAV QS) is heavily multi-threaded and optimized but for some reason is a lot slower than QS decoder v0. I added software decoding results to the above post: as @nevcairiel suggested, it performs better than other copy-back methods, almost like dxva2 native! 如果软解性能不够，需要硬解，推荐使用DXVA2 copy－back. In 2 cases - I had 5% CPU load with CUVID, 7-10% with DXVA-native and 25% with "none". Also CUVID supports in general even more HW decoding codecs than DXVA2 but not using LAV filters e. D3D11 will use Native-mode when its set to "Automatic" device choice, and the renderer supports Native mode. "copy-back" means that the decoder has to copy every decoded video frame from GPU RAM to CPU RAM and then back to GPU RAM. They are essentially identical. So do all copy-back hardware or software decoding methods. If you select a specific device, that forces Copy-Back mode (because for Native to work, the renderer basically selects the device). The current code uses the VAAPI X11 APIs fro dxva2. In MPC, I had the same effect. CUVID is not copyback and it's as fast or even slightly faster than DXVA2 native. With CUVID / Quick Sync / DXVA2 (copy-back), decoded video frames are first copied back to the system memory so that it acts as if it is a software decoder. 7. potplayer. Setup (please complete the following information): OS: I also did few simple CPU load tests on diffrent hardware acceleration settings CUVID vs DXVA vs none. MadVR, MPC-HC , LAV - dxva2 copy-back - with shaders / sharpen complex + 2x bt601 to bt709. D3D11 native is the fastest. 7k次。本文介绍了视频编解码的硬件加速器，包括NVIDIA的CUVID、Intel的QuickSync以及微软的DXVA技术。DXVA分为DXVA1. Is there a way to use Nvidia GPU for MadVR and still use DXVA2/D3D11 native in LAV with Intel iGPU to support hardware decoding HEVC 4k @ 50/60fps? DXVA2 Copy-Back (DXVA2 CB) Note that the native DXVA2 mode doesn't connect to the madVR renderer. DXVA2-copyback presents as 26% GPU load, lower than native in exchange for just a little bit more CPU usage which makes sense because of the When selecting "DXVA2 (native)" in the LAV Video Decoder, the performance is superb and even 1080p60 and 2160p30 videos with high bitrates can be played back. No intermediate filters means that you can't use ffdshow for processing raw video. if I use MADVR+INTEL QUICKSNYC(Hybrid decoding), the color and display are ok. You should either use DXVA2 copy-back or D3D11 (native or copy-back are both fine). DXVA2 (copy-back) – Recommended for Nvidia GPU's and ATI/AMD with UVD3. isnt apparently even aware of the original format, but the pin in LAV filter has the data about Saved searches Use saved searches to filter your results more quickly 论硬解不同解码模式的效率：DXVA2（native）（copy back）D3D11（native）,图拉丁,,论硬解不同解码模式的效率：DXVA2（native）（copy back）D3D11（native）对比,A站,AcFun,ACG,弹幕,视频,动画,漫画,游戏,斗鱼,新番,鬼畜,东方,初音,DOTA,MUGEN,LOL,Vocaloid,MAD,AMV,天下漫友 DXVA2 Native also works with standard EVR. I would like to add to also study the interface between the GPU driver (maybe that's through an awful ExtEscape). The LAV video decoder that is included in the pack offers both variants. 264 streams with only DTS timestamps would play out of sync with DXVA2; Fixed: DXVA2 could crash on some MPEG-2 streams; Fixed: Improved compatibility with a few It is not possible to use native DXVA2 decoding with madVR because the decoded frames are not made available to an external renderer directly. doc / . . 10. D3D11 also offers a Copy-Back mode, however it should probably be quite similar in performance then DXVA2. Ill experiment with the renderless mode on DXVA 2 copy back within LAV The biggest difference between DXVA and D3D11 is the ability for applications to swap between native and copy-back on-the-fly. x264. In those screenshots, the dxva2-native algo in your card is best. Nvidia could be preparing a new spin on the GeForce RTX 3070 Ti going by the latest leak concerning Team Green’s graphics cards. For the best video playback across all my different systems, I'm finding that the included Enhanced Video Renderer [Not Enhanced Video Renderer (custom presenter)] using DXVA2 (copy-back) gives me the most reliable and consistent playback. But in VLC DXVA2 won't play normally interestingly enough, only in MPC-HC. When selecting "DXVA2 (copy-back)" in the LAV Video Decoder though, then the performance is a lot worse, but still slightly better than mpv with --hwdec=dxva2-copy --vo=opengl. This is probably the cause of your problem. DXVA2 Native was not a lossless decode, DXVA2 (Copy-back) is, but D3D11 实在不行用copy-back吧（选dxva2copyback或者d3d11选择一个显卡），copy-back比native速度稍慢，不过好歹也是硬解。 电脑性能够的话软解问题也不是太大。 不过笔记本还是用硬解功耗比较低吧。 I just tried it out and saw that I have lots of framedrops (about 50%) with both decoders on my single-seat system when playing live tv or tv recordings (hd and sd) with a 1920x1080 resolution (HDMI). Copy link You should now be able to use the discrete Gpu with dxva2 copy back. This is called "DXVA"/"CUDA" and is For DXVA2 (copy-back) - on bugged frame image will still freeze, but playback timeline WON'T be stopped. Only downside is that the video data must be copied back and forth to the GPU, which costs a bit of performance. Results 1 to 1 of 1 HEVC acceleration: DXVA copy-back vs. When using native mode (HW selection: "Automatic") I do not get any crashes. The odd-man out in the power numbers is the interlaced VC-1 clip, where QuickSync decoding is DXVA2 Native vs DXVA2 Copy-back. Using native DXVA decoding, the frames are directly passed to the renderer without the copy-back step. AMD HD4XXX / HD5XXX - Choose DXVA2 (native) AMD HD6XXX / HD7XXX - Choose DXVA2 (copy back) [If stutter problems change to native] If you have an AMD HD6XXX or HD7XXX you can use DXVA2 (copy back) in 文章浏览阅读3. 8. LAV Video - im new in this forum sorry my english not so good when installing K-Lite Mega Codec Pack (the latest version 13. View Profile View Forum Posts Private Message Member Join Date so d3d11 or dxva2 (native) + madvr = no black bar detection and none, cuvid, quicksync or dxva2 (copy-back) + madvr = black bar detection assuming that black bar detection is very important to the user, which of the four options mentioned above would you recommend none, cuvid, quicksync or dxva2 (copy-back)? or is the performance / quality The performance of copy-back mode using Intel's MSDK QuickSync decoder v0. Thread Tools. setup. Click to expand Madvr does not support black bar detection with D3D11 (in native mode). But, can I just not use hardware acceleration? Is there any disadvantage, except cpu usage. i. Aka no corruption whatsoever in MPC-HC. I used D3D11 Native to test and I think it is working ok. 8bit x265 2160p file plays perfectly with no cpu used - but a playing 10bit x265 2160p file But i really don't know how to proceed. LAV Video - DXVA2 (native) versus DXVA2 (copy-back) DXVA implementations come in two variants: native and copy-back. 55. Some of the hardware encoders can accept these hw frames as input. So I would grab the latest nightly and test those modes and if they are working fine leave it at that. damien147. cause of the movie has HDR. 1080p. What sort of decoding performance discrepancy were you seeing between 'normal dxva2 copyback' and 'dxva native' on your GTX 960 prior to these changes? It would be nive to implement a small checkbox, which will turn on the ability of Video Decoder to switch to DXVA Copy-Back mode, if DXVA Native was selected and player's video processing filter is enabled Original issue reported on code madVR - high quality video renderer (GPU assisted) Software players In the attached screenshot I use DXVA2 (copy-back) as I have an AMD GPU, for Nvidia DXVA2 (native) is recommended but also give D3D11 a try, for me that will play HDR vids without stuttering but has a problem with Madvr and TV channel changing. On the MPC-HC tutorial says to use DXVA2 (copy-back) on LAV video decoder. 4. Aleksoid1978 opened this issue Aug 29, 2019 · 3 comments Comments. 000fps and Hardware decoder to use -> D3D11 (win 8/10/11) or DXVA2 (copy-back) Hardware device to use -> Your_GPU_Device (leave on Auto with D3D11) Dithering mode -> Ordered dithering; Start -> K-lite Codec Pack -> LAV Audio app -> Enable “Bitstreaming” for the codecs your sound system supports decoding (see Audio wiki page for more details) Unfortunately, I can't attach any screenshots, but these are the evidences that DXVA2 native decoder was not installed: 1) in K-Lite Codec Pack (11. So I must use MADVR. This reduces CPU usage, which can improve performance on slower computers or increase battery life on laptops. g VP8 _____ Win 10 x64 (19042. You should look for another way to get data from GPU. 017791 second(s), 2 queries , Gzip On, Redis On. 9x faster. Welcome to Microsoft community. Interestingly enough, cropping (with copy-back modes) increases GPU usage and don't reduce it (it uses D3D11 works the same as DXVA2 copy-back. I have a Nvidia GTX960 graphics card and I'm using the latest Mediaportal and latest LAV filters set with DXVA2(Native) and UHD and HEVC ticked. dll. Copy-back means it copy's from GPU to system ram so the CPU can do things to it and then copies it back to GPU. madVR only has a few CPU based algorithms, IVTC/Film @Mabus @sev7en. Unfortunately the black bands are not detected when using DXVA2 or D3D11 native decoding. That's especially true for older AMD Both D3D9 copy-back methods were faster than the software decoded D3D11 which was faster than software decoded D3D9. 40Mbps. GMT+8, 2025-1-25 01:08, Processed in 0. Artas1984. Copy-back are safe option in the newest driver, help utilize filter on post processing from GPU memory copy-back to system ram. "NVIDIA CUVID (old)"). With other renderers it is always copy-back. Choose Classic and hit browse to choose the executable file. 42: DXVA2 native decode acceleration is supported for all VC-1 LAV author said DXVA2 (copy-back)/d3d11 should usually be preferred over CUVID because of problems/limitations (though I don't know the details). What difference are we talking about? Can you give us some numbers with -f null - -benchmark in ffmpeg or otherwise in mpv. ##You can also use external LAV filters without any issues. More posts you may like D3D11（native）模式还行，封装功耗内显是10W出头，主要还是GPU相比DXVA2（native）多出了约1W的功耗. I have to build FFMPEG with --enable-dxva2 and --enable-hwaccel=h264_dxva2 ? or Zeranoe build I have never use Direct X, do I need Direct X knowledge, or ffmpeg with --enable-dxva2 and --enable-hwaccel=h264_dxva2 care of everything ? If you want real GPU acceleration (no copy back), you need to While I've known for a while that MPC-HC's overlay renderer does not work with DXVA2 (native) as is noted by the MPC-HC GUI itself, I only just discovered by pure accident today that its overlay renderer does work with DXVA2 (copy-back)!. All driver video enhancements should be disabled. but What sort of decoding performance discrepancy were you seeing between 'normal dxva2 copyback' and 'dxva native' on your GTX 960 prior to these changes? it seems DXVA2 Copy-Back direct mode doesn't work with 10bit HEVC clips, and return to use SW decode. DXVA2 cb vs. And it likely never will giving that its development is pretty much dead. Interesting to see that native is ~3. The quality between Native and Copy-backend should be identical. GPU usage as measured with GPU-Z, if in DXVA2-native, the GPU load is higher compared to D3D11-native (41% vs 29% on this system). HEVC acceleration: DXVA copy-back vs. My setup: Windows 7 x64; AMD A6-5400k; 4Gb ddr3; latest AMD drivers; MPC-HC lite x86(normal MPC-HC tested too) madVR v0. 2017-04-15 18:45 If "Hardware decoder to use" = DXVA2 or D3D11 (native) is set in LAV-Filters, the HDR tone mapping (even at 60Hz) runs absolutely smoothly, without frame drops. (A known problem). 20 (more than 20%) and a lot slower from DXVA2 native with the above system configuration in high frame rate clips - 60fps and/or low bitrate clips If you can upload the problematic file that has issues with DXVA2, then I can test it on my system. - Native DXVA may be in use. LAV Video - DXVA2 copy-back 3. Editing madVR settings. Re: Dolby Vision now possible through MP4 Mux. With MPC Video Renderer and MadVR the D3D11 decoder can work in "native" mode. Of course, when I go back to Windows 7, I won't be able to use D3D11 anymore, so I should choose DXVA2 (native) or DXVA2 (copy-back) for best measureHDR quality result? Top. James D; Beta Tester; Offline; Thanks: 97; Re: GPU acceleration and DXVA in potplayer. - Built-in Video Transform Filter may not be in use. Select DXVA2 (native) hardware acceleration in LAV Video decoder. But there I can change (in the LAV settings) to DXVA2 (copy-back) and the problem is solved. What more interesting is that it has big impact on the "normal" GPU operations for whatever reason. Demo. You can force it to work in copy-back mode by selecting the GPU in the decoder settings. And if there are some limitations in MPCVR's DX9 that can be also shown in that prompt. Reply reply [deleted] • Thanks for the information. Copyback works with all renderers. docx - Free download as Word Doc (. AMD – Bulldozer or newer. From my understanding, the difference is that DXVA2 copy-back is useful when you want to do CPU post-processing on the video or to save on GPU memory if your card doesn't have enough of it. For example, for an MPEG-2 decoder, you would look for DXVA2_ModeMPEG2_MOCOMP, DXVA2_ModeMPEG2_IDCT, or DXVA2_ModeMPEG2_VLD. D3D11 native does not have this problem. From the parameter information you provided, it can be seen that your computer is a desktop computer. #Select madVR in Options>Output>Direct Show Video. The quality should be identical (unless At the same time "native" probably means the default behavior of DXVA, i. Join Date: Jun 2009. 2 Reply by James D 13-04-2020 08:23:34. It is highly recommended you I've tested Intel Quicksync, DXVA2 (copy-back) and DXVA2 (native) hardware acceleration for the h264 codec in LAV decoder and all of them produce the same result. h264 (native) means that the detected codec of the input DXVA2 Copyback: D3D9: Auto ----- 1st February 2018, 22:16 #48766 | Link-Hitman-Registered User . Improve this answer. I am using LAVFilters in combination with madVR under Kodi-DSPlayer and a NVIDIA GTX1080. 85. Life. So yes, in that case copyback is required. I throttled my laptop CPU to minimum (at full speed I have 1% CPU usage) and took 4 avi files. Archiver | 手机版 | 小黑屋 | 上海互联网违法和不良信息举报中心 | 网上有害信息举报专区 | 962110 反电信诈骗 | 举报电话 021-62035905 | Stage1st ( 沪ICP备13020230号-1 | 沪公网安备 31010702007642号). I set it to Prioritize D3D11 DXVA and DXVA2 Copy-Back to D3D11: Auto. Uses more GPU / memory bandwidth since every video texture is DXVA2 Copy-Back generally performs better than CUVID does in my experience. native = false. MAG79; SVP developer; Offline; Thanks: 1104; Re: Possible to use AviSynthFilter with DeoVR or Whirligig? You need DXVA2 (copy-back) to return frames from GPU to system memory. That has similar performance as "DXVA2 Copyback", while "D3D11 Native" is faster with 4k content. With very high resolution video, the amount of data is very large, so some systems have performance issues. 0 Full) wizard, in Hardware Acceleration, DXVA2 native is missing from Decoding Method drop down list. There, you would find a dropdown box to choose between Microsoft Store apps and Classic apps. What do the different Hardware decoder settings solve? I'd seen comments to use the DXVA2 cb on all systems, though it was an older response. But the automatic detection of black bars in madvr doesn't work with DXVA2/D3D11 (native). dxva의 장점으로는 gpu를 디코딩에 이용하기 때문에 cpu 점유율이 매우 낮아지며 또한 렌더링 속도도 무척 빨라지게 된다. Tried to check/change all video settings in driver (like steady video etc. In 2 cases - no noticeable difference between diffrent settings -DXVA2 Native DX9 hardware decoding returns bad quality (blurred chroma) on Nvidia GPUs. but when I use MADVR+DXVA2, there is nothing display, just black screen. 2 Reply by MAG79 28-11-2018 04:21:04. NEW: HEVC Main10 decoding in DXVA2 Copy-Back mode; Faster: DXVA2 Copy-Back in direct output mode uses up to 50% less CPU and performance is improved accordingly; Fixed: H. txt) or read online for free. The result is black screen. Of the 2 native decoders, DXVA2 (native) presented in D3D9 MPCVR was by a notable margin the fastest between the native decoders and the fastest overall of all options. And 2160p60 HEVC 10bit is going to send your CPU into hell . There may be no intermediate filters between the video decoder and the video renderer. RESET_9999 Posts: 2118 Joined: Mon Aug 05, 2019 7:12 pm. I tested performance both on my main system with a GTX570, and with a low-end GT610 a DXVA2 Native vs DXVA2 Copy-back. Plus, as stated in post, dxva2_retrieve_data_call is very inefficient. I noticed less cpu and gpu usage in the past in VLC between DXVA and D3D11 and also in Chrome which supports D3D11 Using native DXVA decoding, the frames are directly passed to the renderer without the copy-back step. 1,333 views. mp4 -f null - -benchmark impact of copyback operations for video playback Software players interaction between dxva2 / d3d is important. Hello there. I have an NVIDIA 1080ti and haven't been able to notice a difference between the options (D3D11 vs. dxva2 is not safe. Oceanic. 6 on Jun 2017) there'are 5 choices hardware acceleration 1. If you select a specific device, that forces Copy For example, if you have some crazy TV station which switches from MPEG-2 4:2:0 content to MPEG-2 4:2:2 for some reason (4:2:2 is not hardware compatible), the DXVA2 Native decoder would probably just fail and give up (because it can't fallback to software decoding), however the DXVA2 Copy Back decoder can fallback to software decoding, and DXVA2有两种实现方式：native和copy-back。 区别是解码后的数据是否还要传回内存。 native选择不传，直接丢给同样依赖GPU工作的渲染器，数据从头到尾都在显存中。 You should never use DXVA2 native, it’s not a lossless quality video decoder. Test if it also happens with DXVA2 copyback. This code should be moved in some way or another to the display driver, winex11. X-Rite i1 Display Pro Plus, EODIS3PL) and creating a 3DLUT for madVR to convert the color data to the native color space of your display. I tried using LAV Video Decoder and selected Native DXVA, it seems to be working, GPU load is higher, and this is i was having some windowed / full screen issues unrelated to hdr, and the fix was to switch LAV Video Decoder filter in mpc from DXVA2 native to copy-back (note, i see your issue was fixed, but i'd rather comment to give another possible option for future people to fix their issues) If I only use DXVA2(native), The color of the movie is incorrect. Reply reply Native vs FSR - Image Slider Comparison at 1080p, 1440p and 2160p upvotes DXVA2 (native)：为微软开发的硬体加速介面，ANI显示卡均可使用，会將解码完成的资讯將不会传给记忆体，直接渲染，故效能比copy-back佳，缺点为限制较多。 如果要开硬解，建议 DXVA2 (native) > DXVA2 (copy-back) > NVIDIA CUVID 或 Intel QuickSync（原版则建议使用DXVA2 (copy-back)） under "Harder Acceleration" change "Hardware Decoder to use:" to "DXVA2 (copy-back) then under "Software Deinterlacing (YADIF)" check the box for "Enable YADIF Deinterlacing" leave the "Output Mode" at "50p/60p (Video)" unless you know for sure your monitor supports a 25hz/30hz the time between updates and possibly the rate issues got Third is the decoder's mode - Native DXVA, Copy-Back (CB) DXVA, Quicksync (QS) etcĭXVA checker 2. Im not sure if the gtx 960 video engine can actually hardware decode 10 bit video So its up too software. This is on windows 7 so I probably have to interop between 2 d3d11 devices, one with 11. 1,330 views. So I Let me clarify what a stream mapping line such as the one below, indicates. Loop through the array of decoder GUIDs to find the ones that the decoder filter supports. Best wishes 15th March 2019, 10:29 DXVA2 Copy-Back is generally the best, since its fully compatible with every feature in all renderers, is fully bit-exact, is reasonably fast (typically faster then If copyback-direct greatly improves performance using the modern ASIC decoder on your GTX 960, that's all that really matters to me. mkv will make card to run at max So the first solution that you can try is to use DXVA2 Copyback instead of Native. DXVA2 native works smother than DXVA2 copy back with all configurations tested, but with both DXVA2 modes, on Nvidia based systems, the issue is more accentuated than Cuvid as explained before (but with Cuvid active the CPU and GPU usage is much higher). Your The performance of copy-back mode using Intel's MSDK QuickSync decoder v0. Software Decode vs. Method used happens on the 20 and possibly 30 series, go to madvr, rendering, windowed mode, how many video frames should be presented in advance, change it to 1, and do the same for exclusive mode. Tags: Using DXVA2 Copy-Back Will test an R9 280x GPU with driver 17. Almost all implementations are of the native type. happened to me with anything using madvr. Select DXVA2 (copy-back) as the h/w decoder in Options>Internal filters>Video decoder and your gpu as your h/w device. Intel – Penryn or newer. org forum reproduced the black screen. AMD is using UVD in a strange way. The odd-man out in the power numbers is the interlaced VC-1 clip, where QuickSync decoding is more efficient It makes no difference whether you install LAV yourself, use the one coming with MPC-HC or the one from a codec pack. Closed Aleksoid1978 opened this issue Aug 29, 2019 · 3 comments Closed Can't DXVA2(copy-back) and D3D11 Native on MPEG2 High Profile. Community Bot. The main types of hardware acceleration available are CPU usage is the same between D3D11-Native/Automatic and DXVA2-Native. Posts: 18 Quote: Originally Posted by aufkrawall; I just gave DXVA2 I just gave DXVA2 native a quick try on AMD (Polaris, Windows 10 CU2): I can confirm the 10 bit banding issues there as well. If "Hardware decoder to use" DXVA2 or D3D11 = (copyback) is set, Note that the way you select Native/Copy-Back for D3D11 is different than DXVA2. For decoding purposes it's the same as DXVA. 1 feature set and the other with 9. DXVA2 Moonlight uses the DXVA2 video processing API (IDirectXVideoProcessor) to do correct colorspace conversion and scaling (D3D11VA has a ID3D11VideoProcessor for the same purpose) - that's what you see showing up on the 3D usage. 6x faster than copyback and software decoding ~1. Show Printable Version; Email this Page; Subscribe to this Thread; 28th Jul 2017 00:59 #1. Should I change to DXVA2? I read on D3D11 also offers a Copy-Back mode, however it should probably be quite similar in performance then DXVA2. It has the sharpest text rendition and doesn't do stupid stuff like putting white pixels in the middle of the letters like O. and there are no known issue with DXVA copyback and DXVA native also does not decode wrong it scales wrongly that are two very different things. 这两种硬解的区别在于，native会把数据完全交给GPU处理，而copy－back会多出一个回传到内存给CPU处理的步骤。从效率的角度来说，native会更高一些。但 DXVA2 Native or Copy-back for low battery consumption? Help I watch movies on my laptop using MPC-HC and EVR-CP. D3D11 native, D3D11 copy-back, and DXVA2 copy-back are the only perfect quality decoders. DXVA2 Copy Back vs Native seem identical, but Cuvid gives an entirely different result Some CUVID vs DXVA2 difference screenshots, please. MAG79; SVP developer; Offline; Thanks: 1105; Thanks for the post: 1; Note that when you select a card instead of Automatic then you no longer use "D3D11 Native" but "D3D11 Copyback"! (I know it's a bit confusing). Both the copyback and cuda of nvidia copy back the images to RAM so the image's can be altered (post-processing), but i don't want to do this. pdf), Text File (. Native hwdec reduces GPU memory bandwidth requirements and reduces DMA engine load, and I am trying to test decoding a h264/h265 video (with just a single iframe) using DX11 and DXVA2. #308. This can be extremely useful on very low-end CPUs (like my laptop's AMD E-350) where every ounce of CPU performance counts （1）chroma upscaling：色度拉升 即色度平面放大。不过色度拉伸的算法比较难感受到差别。 如果配置好的话就设置是 NGU Anti-Alias,high quality（这里开到 very high qulity 以上几乎没什么意义，肉眼分辨不出） Dxva2 and d3d11va are two video decoding accelerator. The clips were all recorded when using the Intel Quicksync hardware acceleration but they still produce a sluggish performance. 572) - Core i5-2400 - Radeon RX 470 (20. Sofware decoding 2. ii. Good call. 3 Reply by Sasafras 18-01-2021 15:14:04 (edited by Sasafras 18-01-2021 15:15:12) Sasafras; Member; Offline; Thanks: 1; When I saw this I changed SVP to native mode on my desktop and it works much better than with FFDShow filter. mp4 Based on the doc I did check that dxva2 is enabled and working fine (roughly 300 FPS) : ffmpeg -hwaccel dxva2 -threads 4 -i source. DXVA2 Native decoding blurs the chroma when it transfers to madVR but DXVA2 copyback does not. Additional Information: Two more AMD users in doom9. pick "Anti-Alias, very high quality" or "Standard, I 've discovered that this apparently is a Problem with the native DXVA2 setting. I added software decoding results to the above post: as @nevcairiel suggested, it performs better than other copy-back methods, almost like dxva2 native! Support Tips, tricks, and step by step guides Win - HOW TO - Set up madVR for Kodi DSPlayer & External Players Tips, tricks, and step by step guides Win - HOW TO - Set up madVR for Kodi DSPlayer & External Players Click Built-in codec/DXVA settings and in the window opened check Use DXVA and Use DXVA2 Copy-Back Mode; DO NOT use "native interface", ensure main. When you find a candidate decoder device GUID, pass the GUID to the HD = DXVA2 copyback 4K = D3D11 native You could make also it optional so that users with enough GPU horsepower don't even have to bother. You need a good understand of h. How do I fix this? Topic: Setting DXVA2 (copy-back) is a must, or not? As the guide, the DXVA2 (copy-back) should be set. It was running fine ! No dropped frames. Then driver crash follows DXVA2 (native), and CPU rendering will just show partial frame corruption. - DXVA2 (native): GPU via DXVA2 API; Every. g. 1. 到底d3d11是硬解，还是dxva2(copy-back)、dxva2(native），这三个哪个是硬解？ 就算这三个其中一个是硬解，那么我这种不支持hd265的卡在解码hd265的时候，用lav的这个设置到底是在硬解还是在软解？ Tried D3D11 automatic (with Nvidia GPU disabled, otherwise LAV refuses to use GPU altogether), but LAV still uses copyback. 264 parser at hand to extract fields of the SPS and PPS structures and all slices of an encoded frame. For D3D11, selecting your GPU from the dropdown is copy-back mode and selecting Automatic is native mode. In short, if player finds mismatch between decoder settings and renderer settings, it will show a prompt message. LAV Video - NVidia CUVID 5. However, DXVA2 native works now with EVR at 50fps, using only iGPU. Sorry for the delay While NNEDI3 option still works on older hardware (Maxwell based GPUs and older), the feature has been removed for the Pascal based GPUs and replaced with a new, faster algorithm called NGU (offers similar quality for lesser performance hit), which should be available. 8 x86; LAV Filters 0. e. With some drivers DXVA2 (native) can reduce the quality in certain Someone changes the LAV settings to DXVA2 Native. CPU with SSE 4. DXVA2 (native) Check the top of the first post for a picture comparison between VLC and MPC-BE w/ madVR. 而MPC-HC+LAV开启DXVA2（native）模式直接会在播放视频的时候显示在软解。CPU直接拉满了，有趣的是画面有时候反倒比DXVA2（copy-back）模式要流畅。 不过无论如何咱验证了即使是英特尔的UHD核显，LAV似乎也不能正常调用DXVA2模式进行H265 10BIT的硬解。 肉眼看d3d11va和软解几乎没有差距，dxva2差一些，同时使用d3d11va的GPU 3D引擎占用更低，对核显用户更友好。总而言之尽量使用d3d11va，这也是mpv设置hwdec=auto时的默认配置。 补充mpv文档中关于dxva2的说明. In the Settings i don't see DXVA2, in other players like MPC-HC i have it and working, but in Jellyfin i don't have it? And then i see AMD AMF, work this with integrated GPU from Ryzen 7700x? This are all "Hardware Acceleration" what i see: 3) LAV DXVA2 native performance, like MS MFT DXVA2/D3D11 native, is the lowest and copy-back is the highest, probably because clocks are pushed higher for 3D (copy-back) mode and it's lower than real-time (47fps vs 60fps) I didn't monitor GPU clocks, but i have no other explanation. Then, the program will be listed there. CPU is jumping up and down. normally between 20-70%. You can also test vaapi on Windows, is it also slower? I would rather investigate why the performance difference is there first. I've been using DXVA2 native because with DXVA2 copy-back there is only green All groups and messages which DXVA2 gpu option should I use - None or one of the GTX options if so which one Thanks . I've got the lowest CPU + GPU load when using DXVA2 Native. 0，大部分显卡支持硬件加速。此外，还提到了DXVA2的两种模式：native和copy-back，分别对应不同的使用场景。 (dxva11) D3D11 Native (dxva2) DXVA2 Native (says upstream) copy-back (settings) madVR IVTC film mode if LAV is deinterlacing then (IIRC) it will say deinterlacing off and it will simply show as a progressive stream (towards the top of the OSD telling you what the stream is) example with LAV doing the job video 50. 0b3 used for DXVA-CB, QS, NVCUVID and CPU. All native decoding methods skip madVR's CPU based algorithms because the video stays on the GPU after decoding; it is not copied back to system memory. 3. I bet there is something with buffer corruption on seeking by keyframes encoded as SEI (recovery_point) marked non-IDR I-frames [normal key frames are IDR I-frames. r/sffpc. Otherwise SVP can't get them. In our experiments, we tried out all of the above except QuickSync. The only options available are SW decoding, DXVA2 copy-back and Intel QuickSync. DXVA2 native and CUVID degrade quality. 16: 38. 1) CUVID is very similar to DXVA2 Copy-Back, and will suffer from the same bandwidth ffmpeg -i source. I tested ASTRA clips and Samsung 4K 10bit HEVC clips with EVR and madVR, all of them im new in this forum sorry my english not so good when installing K-Lite Mega Codec Pack (the latest version 13. It's never choppy, and no frames are dropped even at 4K 60 on the Intel HD Graphics 620. 1 support is recommended. In that case it can Copy-back is useful when you do post-processing on video to save on GPU memory, if your card doesn't have enough headroom can fallback to software decoding. Share. Having an AMD GPU set hardware decoder to DXVA2(native) and play 10bit HEVC. answered Jun 23, 2016 at Install K-Lite Codec Pack, and configure the LAV Video settings to use "DXVA2 (native)" as the decoder, not "DXVA2 (copy-back)". docx), PDF File (. Reply reply Top 2% Rank by size . The only way to get subtitles is to use VSFilter. All about small form factor PCs – decreasing size and maximizing space efficiency! Can't DXVA2(copy-back) and D3D11 Native on MPEG2 High Profile. Hardware acceleration offloads video decoding from the CPU to the GPU. Explanation: If you have a video card from recent years (about three I think) you should be able to use it to decode the video, which will improve performance . (5)Double click Lav Video Decoder on the list and under Hardware Decoder to use choose DXVA2 copy-back or Nvidia Cuvid (If you have an nvidia card). 17th I use Hardware acceleration DXVA2 (copy-back) Other available option is DXVA2 (native) Rest are not available. NVIDIA CUVID. AMD AMF: ffmpeg -hwaccel dxva2 -hwaccel_output_format dxva2_vld -i <video> -c:v h264_amf -b:v 2M -y out. From my understanding, the difference is that DXVA2 copy-back is useful when you want to do CPU post-processing on the video or to save on GPU memory if your card doesn't have enough of it. but the CPU and GPU usage rate will reach 100%. 0. Another question: I can understand the benefit of 'DXVA2 native' compared to 'Copy-Back'. we have recorded cases where copyback 4k60 10 bit(16 bit in terms of bandwidth) is not possible with PCIe 2. 264 bitstreams to proceed (really!). DXVA2（native）是最省电的，不过实际上整机功耗和D3D11（native）比降低幅度不算太大，两者都是可以接受的水平。 For DXVA2 Native there are additional requirements: You must use one of the following video renderers: EVR Custom Presenter, EVR Sync, EVR, MPC Video Renderer, or madVR. (Seems slightly worse actually, but definitely different) Seems that's why nevcairiel didn't want to do CUVID DXVA deinterlacing switchable for "broken streams" for a long time but I don't see difference. To work around this issue, LAV Video Decoder offers LAV Video Decoder (QuickSync / DXVA2 Copy-Back) + EVR-CP: Stream: GPU Usage % Power Consumption : 480i60 MPEG-2: 27. 2 x86; All fliters in MPC-HC looks normal and DXVA2 is active. make sure you have a h. Also, D3D11 uses Direct3D11 video functionality, where DXVA uses Direct3D9 video functionality. LAV Video - DXVA2 native 4. That gives worse quality subtitles than the ISR, and also is not compatible with DXVA2 Native. dxva는 directx를 이용, cpu로 소프트웨어 디코딩을 하는 것이 아니라 gpu를 이용한 하드웨어 디코딩을 위한 인터페이스이다. คือผมตั้ง MPC-HC ของ K-lite Mega codec Pack ให้ใช้ NVIDIA CUVID (ผมใช้ GTS450) เลยสงสัยว่า ถ้าปรับแบบ DXVA2 (Native) กับ DXVA2 (copy-back) มันจะต่างกันยังไงหรือครับ ขอบคุณครับ Also, do I need to use DXVA2 (copy-back) with LAV Video? or can I use DXVA2 (native)? 2 Reply by MAG79 20-05-2021 04:57:51. If he is using MPCVR in DX11 mode, he will get a prompt to change MPCVR settings to DX9. The internal DXVA decoders in MPC-HC are native implementations, and ffdshow also offers a native implementation. D3D11 features a video api which is basically DXVA2 with a slightly altered interface above. So i decide to add some more shaders and then i got dropped NOT operator for inverting the meaning of the flags LAV Video - Improved DXVA2 Native to software fallback in some situations - Support for YCgCo to RGB conversion - Added a new smart Stream Aspect Ratio mode - Will only use Stream AR when the container does not provide a realiable AR LAV Audio - Improved decoding performance of MP4 ALS and a All groups and messages I use latest Jellyfin on my PC with Windows 11 22H2 and use the integrated GPU from my AMD Ryzen 7700X. 4ghz and 16GB of ram. Renderer: VMR9 Renderless (HQ subtitles) I've tried Haali's video - still the same even worst I've tried Enhanced video renderer - 4K videos playback is normal but all other videos below 4k resolutions are changed and look worst. mp4 NEW: HEVC Main10 decoding in DXVA2 Copy-Back mode; Faster: DXVA2 Copy-Back in direct output mode uses up to 50% less CPU and performance is improved accordingly; Fixed: H. DXVA2 is old and IMO should be avoided. Unfortunately, there seems I can set LAV Video to DXVA2 copy-back as a workaround which I have done to fix my own set-up. present the frames right away without copying them back. to iGPU, which now gives me If you do want correct color look into measuring your display's native color space with a colorimeter (e. native or copy back? Depending on the case. DXVA2 native will do same as DXVA2 copy-back. This guide contains all the info on all the madVR settings. With "native" that's not necessary, so performance with "native" should be a little bit better. Skip to first unread message The behavior in older cases is a copy-back style approach, but jbauman@ has recently added code to avoid these copies in some cases. Preferences -> Filter Control -> Video Transform Filter Usage is set to 'Always Use (Recommended)' [Attachment 54064 - Click to enlarge] These transforms work if I set DXVA2 Copy-Back to D3D9 or D3D11 but then video playback slows to 10 FPS. Note that the way you select Native/Copy-Back for D3D11 is different than DXVA2. Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264)) Stream #0:0 indicates that the input stream is from the first file #0:0 and is the first stream in that file #0:0-> #0:0 indicates that the input stream is sent to the first stream of the first output file. mp4 ffmpeg -hwaccel d3d11va -hwaccel_output_format d3d11 -i <video> -c:v h264_amf -b:v 2M -y out. There is one exception, and this is where D3D11 has a benefit, is when you use it together with MadVR. Hi. The nVidia is a 'copy-back' type of DXVA. Standard EVR does not work with the internal subtitle renderer and also does not support rotation. The DX11 hardware decoding API (D3D11VA) that is used when LAV Video is set to D3D11 Automatic (so native decoding is used), and madVR is set to use Direct3D 11, avoids these problems. 2131 of the Video Renderer, I have noticed lack of hardware acceleration (LAV filters shows active decoder as avcodec, which I assume means software decoding, rather than dxva2n) when Direct3D 11 is enabled in MPC VR settings and the Hi, I've found a serious banding issue (scenes with white clouds show a pink posterization/banding effect) with 4K UHD HDR movies, located the source to be DXVA2 - if I disable H/W GPU acceleration (Native DXVA2) in the LAV video codec, then the banding is gone and scenes look perfectly normal. i use mpcbe beta/lav beta/madvr beta on win10, with a 2070super, set to dxva2 copy back for interlaced dvds, and d3d11 for everything After updating the K-Lite Codec Pack, which the latest tested version as of writing this contains version 0. DXVA2 native versus copy-back: with native mode the issue is much more visible, Samsung. 0和DXVA2. Do not use (Recommended) 2. 264 streams with only DTS timestamps would play out of sync with DXVA2; Fixed: DXVA2 could crash on some MPEG-2 streams; Fixed: Improved compatibility with a few What is hardware acceleration. 20 (more than 20%) and a lot slower from DXVA2 native with the above system configuration in high frame rate clips - 60fps and/or low bitrate clips Hello there! I have crashes when decoding in "Copy back" mode. jyhi lkylczh nennkq zgbrwc cyfx xseq syqc hepowti lfxqtdi wua