Apr 30, 2011 · It is a DirectShow Video Decoder utilizing the NVIDIA hardware decoder engine through the CUDA Video Decoding API ("CUVID"). Solving audio problems. Post by Roman Gorelik Can someone explain please what is the difference between hwaccels cuda and cuvid? Which one should be used in which cases? May 26, 2011 · If you have an NVIDIA gpu, wich by the way should be the only gpu you need to buy for an htpc now at least until someone can manage to figure out how to use ati's stream graphics engine to do video decoding and rendering the way that madvr + lav cuvid does. Use nvdec if you want accelerated decoding with the ffmpeg parser. I throttled my laptop CPU to minimum (at full speed I have 1% CPU usage) and took 4 avi files. Intel QuickSync: Intel GPU which supports Intel Quick Sync Video is used for video decoding using Intel VA API. But these checkboxes are really for turning off Hardware decoding for those file formats. -hwaccel cuvid uses NVidia CUDA GPU acceleration for decoding (also working: dxva2)-pix_fmt p010le YUV 4:2:0 10-bit-c:v hevc_nvenc uses HEVC/h265 GPU hardware encoder-preset slow HQ gpu encoding-rc vbr_hq uses RC option to enable variable bitrate encoding with GPU encoding-qmin:v 19 -qmax:v 14 sets minimum and maximum quantization values (optional) Apr 28, 2019 · Select DXVA2(copy-back). Please note that Freemake Video Converter supports DXVA only for H. DXVA2 (copy-back): Can be used by any hardware that supports DXVA2 (Intel might have some issues with VC1 video). On Windows 7 you need to use DXVA2 Copy-Back. This video will show the difference between the accelerated speed we can get by enabling the 2 mechanism, nvidia's CUDA Cores And Microsoft's DXVA technology 1 Answer1. I use Shark007 codec (based on ffdshow filters). 172. Why the decode has to be dxva2 and default to Nvidia is something nobody is willing to explain, but it works. Audio isn't working in MPC-HC. One of the reasons to use hardware accelerated decoding is to CUVID also does not offer any benefits. Intel QuickSync: Similar to CUVID, but for Intel's GPU:s. If volume is very low: Codec Tweak Tool > Fixes > Reset Windows Audio Mixer volume If you are using DXVA2 or CUVID hardware accelerated decoding, then try disabling that and using pure software decoding. Great: Now I have fluent 4k reception with NVIDIA CUVID selected. Feb 07, 2021 · At least on my Windows 10 system, the GPU display in Task Manager shows hardware acceleration being used on both Decode and Encode. On the current hardware, this is only a "Hybrid" acceleration, which means it uses the GPUs 3D shaders to perform calculations, and not dedicated decoding hardware like H. Jan 10, 2019 · I use LAV Filters for DVB-S2 and DVB-T2 (H265) with DVB-Viewer and Hauppauge WinTV-HVR-5525 and NVIDIA GTX1050Ti. Then in DXVA2 native mode the same result. Video frames are decoded with the same hardware as with DXVA on GPU, but the video frames are required to be copied back to system RAM. DXVA2 hardware acceleration only works on Windows. Also there is no reason to use ffdshow bloatware anymore because if lav filters. In order to build FFmpeg with DXVA2 support, you need to install the dxva2api. Member. Several decoders are currently supported, in particular H. I use 1-2 CPU threads to stream a 4K Jul 27, 2017 · HEVC acceleration: DXVA copy-back vs. Which one should you use if you own a Nvidia card and use Windows 10? Sep 09, 2021 · A proposal: change Hardware Acceleration from CUVID to DXVA2-CB. You can do that with a third party tool called "NVIDIA Profile Inspector". Jul 08, 2018 · – NVIDIA CUVID: Use the CUDA units of NVIDIA graphics cards – Intel QuickSync: Intel specific acceleration method, it depends if our GPU supports it or not – DXVA2 (copy-back): Copy the video content from the RAM of the graphics to the RAM of the PC – DXVA 2 (native): Uses the memory of the GPU. It means that DXVA starts working on your PC when you wonder how ro rip a DVD or convert AVI/MKV/MP4 with H. 5456 Player Version#: Web Client ( 3. Your Intel GPU will be used by default if you use DXVA2. Since we use the same OS with the same driver, and yours is also showing artifact using LAV CUVID, it could be hardware issue (assuming we have the same version Anyway, at the time i had ugly video decoding using LAV DXVA2(native), i didn't have any problem with LAV CUVID, the one that gets ugly is only the DXVA, but now both of them are okay. DXVA2 (copy-back): Can be used by any hardware that supports DXVA2 (Intel might have some issues with VC1 Anyway, at the time i had ugly video decoding using LAV DXVA2(native), i didn't have any problem with LAV CUVID, the one that gets ugly is only the DXVA, but now both of them are okay. NVIDIA CUVID vs. Actually not true. If this gives performance issues, then use DXVA2 Native instead. NVIDIA CUVID. 264 for the following widths: 769-784, 849-864, 929-944, 1009-1024, 1793-1808, 1873-1888, 1953-1968, 2033-2048 pixels. It is a DirectShow Video Decoder utilizing the NVIDIA hardware decoder engine through the CUDA Video Decoding API ("CUVID"). 69. Oct 05, 2014 · It recently added support for CUVID/DXVA2 accelerated HEVC. -hwaccel cuvid: Use end-to-end NVIDIA hardware acceleration h264_cuvid: Use NVCUVID/NVDECODE h264_nvenc: Use NVENCODE scale_npp: high-perf CUDA scaling ffmpeg -y -vsync 0 –hwaccel cuvid -c:v h264_cuvid -i input. There is no bug to report to ffmpeg here. Using LAV filters/splitters on MPC-HC and the nvidia cuvid, on all 4K 10 bit hevc samples I have there is zero gpu video engine acceleration. Intel QuickSync vs. CUVID forces the graphics card into its highest performance state. The cuvid suffixed decoders use the nvidia parser, which has known limitations vs the ffmpeg parser. CUVID and QuickSync are outdated actually, DXVA2 can beat them. In case you have an NVIDIA GeForce chip, you can benefit both from CUDA and DXVA while converting videos. For some reason (I am not sure why and how) DXVA2 yields lower quality with nVidia (at least with 10bit videos). DXVA2 native MPC-HC lists these as the hardware acceleration modes. More universal decoder is DXVA2 (copy-back) This is strange, because as I said, it is working with D3D11. It supports Intel, NVIDIA and AMD GPU. That’s why the h264_cuvid example fails and the other does not. 1Topic bySpartan 04-04-2020 12:24:08. -----Hi folks, i would like to introduce my LAV CUVID Decoder. DXVA2 (copy-back): It uses DirectX Video Acceleration (DXVA)2. You can choose between MPC-HC, ffdshow XDVA or LAV (witch support DXVA2 copy-back/native, nVidia CUVID and Intel QuickSync). Offline. CUVID is not compatible with HDR. Video playback is very sensitive to timing. I have to Intel CPU systems with QSV, one of which has an Nvidia card. I could give it another whack. LAV CUVID will not be developed any further. I am using CUVID for years now. Before it was only possible with DXVA2. If you want to use your NVIDIA GPU you need to adjust the NVIDIA settings. Jun 04, 2013 · GigaByte RX5700 GO. mp4 -c:a copy –vf scale_npp=1280:720 -c:v h264_nvenc -b:v 5M output. Mar 08, 2011 · LAV CUVID is DEAD. Intel QuickSync. 13. I'm also under the impression unless you output higher than 24bpp, you cannot view HDR content regardless. Sep 06, 2019 · Guys, sorry, maybe a small offtopic again , but kinda related to nVidia. As discussed here, I feel that DXVA2 Copy-Back in LAV Video is a better choice than CUVID for hardware acceleration with Nvidia graphics cards. 264 and MPEG2 decoding. And 2160p60 HEVC 10bit is going to send your CPU into hell. Its still in its early stages, but its already been tested thoroughly and supports all major formats that the NVIDIA hardware can decode, which are right now H264, VC-1, MPEG2 and MPEG4-ASP (DivX/Xvid). 9. Thread Tools. GPU: MSI RTX3080 10Gb. 1. So its up too software. It is advised to use DXVA2 (native) if only DXVA2(copy-back) fails. Spartan. 1 Answer1. 264 video codec . The player, I use Pot player (Daum) or GOM player. A high GPU load can give problems, just like a high CPU load can give problems. This is definitely something else but in general, you should use D3D11 with madVR (auto = native mode is fine). Feb 14, 2017 · The maximum bit depth I was able to select in the NVIDIA control panel for my TV was 24bpp. Since we use the same OS with the same driver, and yours is also showing artifact using LAV CUVID, it could be hardware issue (assuming we have the same version 1Topic bySpartan 04-04-2020 12:24:08. . These hardware decoders are: DXVA2 (copy-back) NVIDIA CUVID. Sep 05, 2018 · 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). NVIDIA CUVID: Nvidia's CUDA based decoder. The LAV filter works fine. 1) or AppleTV (latest) Hi folks, I run both Emby and Plex under Docker on Linux, using nvidia-docker to provide GPU capabilities to the container. Jul 27, 2017 · HEVC acceleration: DXVA copy-back vs. Currently, what is prefered HW decoder? I am finding opposite opinions, CUVID vs DXVA2 copy back. It is also less energy efficient. Benik3, Jun 4, 2013. It currently works in hybrid shader+fixed mode on Haswell and Kepler. And D3D11 is faster anyways (I tested this on a very old notebook with a GT8600M, a feature Mar 12, 2021 · NVIDIA CUVID: Nvidia's CUDA based decoder. Nvidia NVDEC (formerly known as NVCUVID) is a feature in its graphics cards that performs video decoding, offloading this compute-intensive task from the CPU. Topic: DXVA vs CUVID? By default, MPC-HC uses DXVA but since I have an nVIDIA RTX 2080, would it be better to use CUVID?? I tried CUVID and it worked but I just wanna get your opinion on this. You can see checkboxes for Resolutions. SVP needs these frames in operational memory. Nov 16, 2018 · Server Version#: 1. After digging around, for like five minutes, I found NVIDIA doesn't allow consumer cards to go higher than 24bpp. . Presumably, Broadwell and Maxwell will rebalance the 'hybridness Unrelated: The following have no effect, removing them makes debugging easier:--enable-asm --enable-yasm --disable-libopenjpeg --enable-decoder=tscc Also, for NVidia, if you check this link Nvidia PureVideo, some widths can't be decode : Note that all Feature Set B hardware cannot decode H. Filters are another problem. That may sometimes help, certainly if you make use of PixelShaders in Media Player Classic. All of its functionality has been merged into LAV Video. NVIDIA CUVID + Reply to Thread. #5. It is accompanied by NVENC for video encoding in Nvidia's Video Codec SDK. I also did few simple CPU load tests on diffrent hardware acceleration settings CUVID vs DXVA vs none. Change the audio renderer: MPC-HC options > Playback > Output. 264 or MPEG-2 decoding would. h header. I found that CUVID is available on my graphics card. 264, MPEG-2, VC-1 and WMV 3. So, you need to use decoder that copies frames from video to operational memory. mp4 Input Post-processing Decode h264_cuvid Scale scale_npp=x:y Sep 21, 2020 · NVIDIA CUVID: NVIDIA GPU is used for decoding the video using CUDA Video Decoding API. Results 1 to 1 of 1 HEVC acceleration: DXVA copy-back vs. Use MPC-BE or MPC Video Decoder to play it with DXVA2 native. Nov 18, 2020 · DXVA2 Direct-X Video Acceleration API, developed by Microsoft (supports Windows and XBox360). Nov 14, 2014 · This version introduces experimental support for CUVID and DXVA2 HEVC HW acceleration on Intel Haswell and recent NVIDIA cards. 0 API for video decoding. Since Microsoft updated DirectShow I had frequent asynchron tone to picture. DXVA2 copy-back vs. With Emby (which uses ffmpeg as a transcoder), I can use hardware acceleration for both encoding and decoding (h264_cuvid), and it works a treat. LAV video decoder configuration has hardware video accleration configuration.