Cuvid vs nvdec Notice . 8. They can be used for encoding and decoding on Windows and Linux. Note that NVENC on Turing does not handle interlaced content, and as such, deinterlacing is mandatory. NVDEC engine on NVIDIA GPUs decodes the input video bitstream in supported formats. ts With 3. Libav picked up NVDEC support first, then FFmpeg and GStreamer followed in 2017. ie, the maximum h265 horizontal resolution is 8192 on a GP10x, 4096 on a GP100 or less, and unsupported on any architecture less than GM206. Cause: I followed specific instructions which pinned nv-codec-headers to n8. Regular; 24 157 1 Author; Posted March 12 . 8 but left FFmpeg at master. The Level-3 hardware acceleration amazes us with up to 133 fps. exe -hwaccel cuvid -c:v h264_cuvid -i video. NVIDIA Video Decoder (NVCUVID) For NVIDIA Video Decoder (NVCUVID) use the NVIDIA Video Codec SDK. Jan 15, 2023 · Platform: Windows 11 x64 GPU: NVIDIA RTX 4090 May I get a little help on understanding the pros and cons of "d3d11va" vs "nvdec" for hardware decoding on Windows? Basically, the difference between the following two: mpv --vo=gpu-next, -- May 17, 2017 · I am implementing a video decoder using NVidia's NvDec CUVID feature. However, I have found official tutorial from NVIDIA for compiling FFMPEG from source with NVENC enabled. 1 DECODING & INTEROPERABILITY 请教楼主 ，我用mpc hc 加madvr 播放m2ts，为啥chroma 始终是dxva ，播放别的格式mp4啥的能用ngu ，只有m2ts的时候不行 ，lav选的none啊， 另外我有有be hc pot 3个播放器，pot be加的madvr lav bfrc —————— hc 没加bfrc用不了ngu ，加了就能用ngu到底是什么问题那？ Nov 18, 2018 · In order to prefer usage of -hwaccel nvdec vs -hwaccel cuvid we have to make used surfaces configurable and make memory allocation similar to -hwaccel cuvid, and of course the issue with -bf 3 on ffmpeg-git and ffmpeg-4. . ts) in FFmpeg, and the video can only output 468 frames; Try using NVDEC(ffmpeg -hwaccel nvdec -i C:\a-3. NVDEC decodes the compressed video streams and copies the resulting YUV frames to video memory. However if i change -hwaccel cuvid -c:v h264_cuvid with -hwaccel nvdec it works. 0 has released the NVIDIA NVDEC-accelerated H. Mar 17, 2023 · CUDA (NVENC/NVDEC) NVENC and NVDEC are NVIDIA's hardware-accelerated encoding and decoding APIs. The choice exists because it is difficult to detect automatically which one will work better in all cases, but when in doubt, trust the defaults. Oct 26, 2021 · NVIDIA provides software API and libraries for programming NVDEC. 265) to use as input at this time intentionally, so I want to genera Jan 11, 2017 · I have seen all of those documents before we created this table, but i was unable to find which GTX (no Quadro) has 2xNVENC chipsets and also NVDEC/CUDA performance, so this could help somebody to know true power of those cards… Limitation using native (Quicksync, CUVID/CUDA, old DXVA2 native, old VDPAU) is lack of freedom doing post processing can cause glitch, massive frame drops, stuttering, flashing frame, corrupt time stamp, slowest playback and so on. Where possible, stick to yadif_cuda and nvdec hwaccel instead for performance and stability reasons. 8 everything works fine, with 3. Apr 10, 2023 · I am implementing a video decoder using NVidia's NvDec CUVID feature. In combination with NVENC, it offers full hardware transcoding. Level-2 vs. cuvid does not auto-detect the decoder. ffmpeg -c:v h264_cuvid -i input output. Sep 8, 2019 · We can use nvdec to replace cuvid Now, we can see that we have already put the transcoding work to GPU and reduced the CPU usage to 2%. 03 GPU: M4000 DRIVER: 384. Codec support varies by hardware. I am also able to transcode using the cpu using the following code with the fluent-ffmpeg library for node. According to this, this and this I understand that in h. Jul 28, 2019 · In order to prefer usage of -hwaccel nvdec vs -hwaccel cuvid we have to make used surfaces configurable and make memory allocation similar to -hwaccel cuvid, and of course the issue with -bf 3 on ffmpeg-git and ffmpeg-4. H. Can I use this in the current Emby version 4. all you need is: ffmpeg-i input -c:v h264_nvenc -profile high444p -pixel_format yuv444p -preset default output. Sep 9, 2018 · ffmpeg # CUDA/CUVID/NVDEC # 完全硬件转码 vs 部分硬件转码. 264 / H. (Nvidia) Hardware Acceleration and Cuvid vs NVENC vs ffnvcodec vs Cuda So I'm trying to get hardware accelerated encoding working (just nvidia for now), and boy oh boy is this an adventure. Right now, I am at the stage where I am just trying to determine if the binaries that I'm even compiling are the ones I want. The hardware capabilities of NVENC and NVDEC are exposed in the NVIDIA Video Codec SDK through APIs (herein referred to as NVENCODE API and NVDECODE API), by which the user can access the hardware acceleration abilities of Mar 22, 2022 · It is possible if both Intel HD Graphics and NVIDIA GPUs are present, enabled, have propriate drivers, and the FFmpeg version supports it. Sep 25, 2024 · 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. /configure. Nov 16, 2018 · In order to prefer usage of -hwaccel nvdec vs -hwaccel cuvid we have to make used surfaces configurable and make memory allocation similar to -hwaccel cuvid, and of course the issue with -bf 3 on ffmpeg-git and ffmpeg-4. 69 CUDA: 9. The video codecs of the input and the output must be supported by the hardware, and there are other "usual" limitations (like supported pixel format and maximum resolution). So I think the answer of @halfelf was wrong. ts -vcodec h264_nvenc -preset slow -c:a copy -r 50 -f mpegts output. They differ in how frames are decoded and forwarded in memory. 04. Example command, input. Nvidia NVDEC (formerly known as NVCUVID [1]) is a feature in its graphics cards that performs video decoding, offloading this compute-intensive task from the CPU. Apr 30, 2019 · A note to remember, is that neither one is native cuda decoding. The first one will use old cuvid decoder path and the second one use nvdec accelerator path. So just use D3D11 either native or copy-back, based on if you need additional CPU processing. Now, just running a quick test using ffmpeg 4. Options¶ num_surfaces (uint, default: 20): number of hardware surfaces to allocate unload (enum, default: no): decoder unload mode . CUVID, which is also called NVDEC by NVIDIA now, can be used for decoding on Windows and Linux. The main difference between them is that NVDEC does not Jan 31, 2021 · goal: In my script I try to check if nvdec on my graphics card is available/functional. The hardware capabilities of NVENC and NVDEC are exposed in the NVIDIA Video Codec SDK through APIs (herein referred to as NVENCODE API and NVDECODE API), by which the user can access the hardware acceleration abilities of Mar 28, 2023 · I also tried using CUVID to decode a-3. NVDEC NVDEC (formally named as NVCUVID), a newer NVIDIA's VDPAU-successor, was initially part of the CUDA toolkit and then moved to the CUDA-based NVIDIA Video Codec SDK. Figure 4. Level-3. Both will output cuda surface. Oct 4, 2018 · Recent ffmpeg versions fail to use the deinterlacer of nvdec (cuvid). Also, the machine where this doesn't work is actually newer and has a more recent May 8, 2019 · I have learn’t that latest FFMPEG 4 supports HW acceleration which is compatible for Maxwell arch GPUs like on Jetson Nano. But nvdec is supposedly better than native cuda decoding. We used two different input sequences for comparison: Jockey and Kayaking. OVERVIEW The NVIDIA Video Decoder Interface hereafter referred to as NVDECODE APIs lets developers access the video decoding features of NVIDIA graphics hardware and also interoperates video with compute and graphics. 264 (1920x1080) on i7-4770K 3. mp4" video = av. patch ( 48. 3. 0rc until I want to deinterlace with cuvid instead yadif filter. We try to convert a 4K H. mkv ffmpeg finishes and seems to be unable to open cuvid functions: Cannot load cuvidGetDecoderCaps [h264_cuvid @ 07047b80] Failed loading nvcuvid. DXVA2 native has its limitations, though I use it sometimes with interlaced video cause PCI bus is too busy with traffic for copy-back in this case. Reply reply More replies More replies The absolute path to cuvid lib can be set using the cuvid_lib option in core or temp section of the config file, e. Codec support varies by hardware (see the GPU compatibility table). † For details on NVDEC and FFmpeg, please refer to the following articles. No luck so far. 0 without the green artifacts? Unfortunately I still have ffmpeg in version 4. The ESP32 series employs either a Tensilica Xtensa LX6, Xtensa LX7 or a RiscV processor, and both dual-core and single-core variations are available. Any ideas why and what's is difference(and which one is better) between cuvid and nvdec Mar 26, 2024 · It lights up all of the CUDA cores of the GPU to perform the functionality. 2 (Ubuntu 22. The behavior likely desired is to invoke NVENC or NVDEC which are both faster and dramatically more power efficient for both video encoding and video decoding. Usually people having streams of packets and feeding them to the NVDEC. Newer versions drop frames. Share I'm encoding to MPEG2 and when I did my original tests using cuda/h264_cuvid I was getting endless streams of thousands of buffer underflow errors and the output would take forever, I'm talking like 20 minutes vs. Here is the memory allocation working mechanism when using We would like to show you a description here but the site won’t allow us. 4 and above Nov 11, 2019 · I'm trying to encode, apply a filter and decode a video through GPU. -cfg=temp:cuvid_lib=PATH_TO_CUDA. NVDEC API for video decode acceleration (formerly called NVCUVID API) NVIDIA GPUs contain one or more hardware-based decoder and encoder(s) (separate from the CUDA cores) which provides fully-accelerated hardware-based video decoding and encoding for several popular codecs. adding --enable-nvdec returns unrecognized option during . Is either of nvdec/cuvid the recommended one to use? Is either one deprecated? 2. Apr 6, 2022 · The difference between CUVID and NVDEC in ffmpeg is that in case of CUVID, the whole video stream is sent to and processed by the Nvidia Media API and in case of NVDEC, the parsing is done by ffmpeg and only the video frame data is sent to the Nvidia API. Extra pointers: Sep 11, 2021 · NVIDIA CUVID Intel QuickSync. Feb 24, 2022 · The choice of cuvid vs nvdec is something you'll just have to try and see what works best for your hardware. Apr 15, 2019 · Hardware-accelerated decoders (and their associated wrappers): Depending on your input source, and the capabilities of your NVIDIA GPU, based on generation, you may also tap into hardware accelerations based on either CUVID or NVDEC. The libva-vdpau-driver project gave us a VA-API implementation on-top of VDPAU. 264, HEVC, MJPEG, MPEG-1/2/4, VP8/VP9, VC-1. 04) the command for this is now `gphoto2 --stdout --capture-movie | ffmpeg -hwaccel nvdec… NVIDIA VIDEO DECODER (NVDEC) INTERFACE PG-08085-001_v07 | 1 Chapter 1. The OSS Gst-nvvideo4linux2 plugin leverages the hardware decoding engines on Jetson and DGPU platforms by interfacing with libv4l2 plugins on those platforms. 2. Nov 8, 2022 · The hardware encoder and hardware decoder are referred to as NVENC and NVDEC, respectively, in the rest of the document. CUVID offers decoders for H. mp4 -c:v h264_nvenc -r 15 output. ts) and soft decoding to output a complete 471 frames. NVDEC is a new API for accessing the GPU of NVidia devices. Aside from the support matrix and SDK, there are rumors (see this thread) that the new RTX cards only contain one NVENC, instead of the two in the GP104 and GP102 dies. Native cuda decoding is entirely handled by the hardware, with no involvement from software. They each have their own way of parsing etc. Thank you for the quick reply Tom. 1 has to be fixed as well. mkv video. 4 KB ) - added by Peter Bennett 6 years ago . To the eyes of authors, lanczos(1) appears to be most similar to NVDEC. g. Reload to refresh your session. Jul 24, 2019 · Separate from the CUDA cores, NVENC/NVDEC run encoding or decoding workloads without slowing the execution of graphics or CUDA workloads running at the same time. 264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (decoders: h264 h264_v4l2m2m h264_vdpau ) (encoders: libx264 libx264rgb h264_omx h264_v4l2m2m h264_vaapi ) Dec 27, 2024 · Hardware Acceleration: Level-1 vs. 0 NVENC so, Is it possible to increase support for gpu acce May 30, 2024 · I'm decoding each RTP packet to see if it contains IDR NALU and when it does I pass NALUs (PPS, SPS, I-frame in the case) to decoding pipeline where I run NVIDIA Video Codec SDK RTSP stream is h264 If you want to verify this yourself I am sure you can bring up a fame from a video in both DXVA2 Native vs copy-back or vs D3D11, screenshot them, and view them in an image diff tool to see any pixel differences. 1. 4:6670 -vcodec h264_nvenc -profile:v high -preset fast -pix_fmt yuv420p -vb 3000K -bf 2 -acodec libfdk_aac -ab 128000 -ar 48000 Main goal is Sep 30, 2024 · TL;DR Version - Major Update 1. 2 minutes for a single file. 2. Ubuntu 20. Note that FFmpeg offers both NVDEC and CUVID hwaccels. Oct 19, 2019 · How to get FFmpeg to export the needed symbols on (K)ubuntu cosmic/disco (and similar distros) so OBS and MPV can use NVENC and NVDEC by installing the FFmpeg Nvidia dynamic linker code - omen23/ffmpeg-ffnvcodec-explanation If all you want to do is encode using the built in Nvidia encoding chip. This works correctly: "ffmpeg-hwaccel cuvid -c:v h264_cuvid -i ", and so does "ffmpeg -hwaccel nvdec -i ", but this does not: "ffmpeg -hwaccel cuvid -i " 3. 264, HEVC, MJPEG, MPEG-1/2/4, VC1, VP8/9 hwaccel decoding added. And I'd assumed random dithering would be less visible, and should take very little effort (extra work). Old behavior (with first temporary commit, data copy from GPU to CPU memory) is available in CUVID settings. This document is provided for information purposes only and shall not be regarded as a warranty of a certain functionality, condition, or quality of a product. NVENC and NVDEC support the many important codecs for encoding and decoding. Mar 8, 2011 · CUVID has the advantage that the hardware communication was directly developed by NVIDIA and therefor should (hopefully) get the values always just right. mp4. Im using H264_nvenc for encoding it, and trying to use h246_cuvid for the decoding, but FFMPEG can't find the decoder. FFmpeg refers to NVENC/NVDEC interconnect as CUDA. "NVIDIA CUVID (old)"). Oct 28, 2024 · NVDEC/CUVID. see more ffmpeg 4. and NVDEC, respectively, in the rest of the document. Postprocessing may also use CUDA capabilities. Apr 2, 2023 · Windows上解码方式优先d3d11va和nvdec-copy。单纯测试解码性能的参考度并不大，还要参考实际测试h264,vc1,hevc,vp8,vp9,av1 and NVDEC, respectively, in the rest of the document. 1 is being polished, we're getting close to its release - until then switch to new_lobby_beta which includes the fix for the NVDEC crash Important info in advance The game is getting ready for Major Update 1. They used to be called CUVID. The NVIDIA devices are a bit different: the machine where nvdec works has a GeForce GTX 960M, while the machine where it doesn't work has a GeForce GTX 1050, but I suspect this shouldn't be the problem. 0RC103 FFMPEG: latest from GIT ffmpeg -c:v h264_cuvid -resize 1280x720 -deint 2 -i udp://@239. Aug 14, 2020 · The h264_cuvid is what gets used to decompress my 4K video on my RTX board. I stole it from the tdarr log. ESP32 is a series of low cost, low power system on a chip microcontrollers with integrated Wi-Fi and dual-mode Bluetooth. May 6, 2019 · こんな画面がでますので「Preferred decoders」のところにh264_cuvid,hevc_cuvidと入力します。そうすることでGPUでデコードを処理できるようになります。 そうすることでGPUでデコードを処理できるようになります。 ffmpeg: NVidia hardware encoder `h264_nvenc` and hardware decoder `h264_cuvid` - Documentation (Nov 2020) - ffmpeg -h decoder=h264_cuvid May 22, 2020 · I'm trying to copy the NV12 NVDEC decoded buffer directly into an NV12 d3d11 texture. I don't have any source video (H. Nov 15, 2018 · Recent ffmpeg versions fail to use the deinterlacer of nvdec (cuvid). Now it should be the same performance as VDPAU. 1 not only including new content and game changes, but also tons of fixes on our side to make your experience better. According to chapter 2 of the (woefully inadequate) manual, decoding limits are specified by GPU architecture. OS: Unbuntu 16. Mar 10, 2022 · 3. otic; Member; Offline; Thanks: 2; Re: DXVA2 or D3D11? how to get NVDEC to work properly on PotPlayer when playing 8k60 AV1 files? (RTX3070) the video i used for testing was the "Japan in 8K 60fps" ( zCLOJ9j1k2Y ) video on youtube, it works perfectly fine when viewing on youtube, very minor dropped frames, low cpu usage as intended. ts (ffmpeg -c:v h264_cuvid -i C:\a-3. You need copy-back for most post-processing though(if you use them), since post processing can't modify the frames stored in VRAM, and only main RAM. It uses nvidia Jan 31, 2020 · I can run this from the commandline to transcode a video to 720p: ffmpeg -vsync 0 -hwaccel cuvid -hwaccel_device 0 -c:v h264_cuvid -i input. Feb 28, 2018 · This can arise due to a version mismatch between nv-codec-headers and FFmpeg. That can be done with the dedicated yadif_cuda filter or if you're using the CUVID H/W wrappers such as h264_cuvid. Sep 22, 2024 · 首先在出示对比结果之前咱需要说一下本期发现了一个华点，就是之前在跑分的时候掐表量电源输入功率和系统内看cpu封装功率是不一致的，cpu跑分过程中电源输入功耗其实没达到15w，低于系统内的显示。 b： 选择nvidia cuvid 就没任何问题，虽然同配置的madvr下，画纸上看不出区别，但是显卡的占率用是明显低了10% C：最新版本的LAV VIDEO DECODER 配合最新的POTPLAYER X64，这里会多出来 D3D9 和 D3D11，用这两个也没问题，madvr下 显卡占用率还是很低 Unrelated: The following have no effect, removing them makes debugging easier:--enable-asm --enable-yasm --disable-libopenjpeg --enable-decoder=tscc Apr 20, 2023 · NVIDIA provides software API and libraries for programming NVDEC. 4. We then compare the time it takes to decode the same MP4 video with CPU and NVDEC. Dec 21, 2018 · If my understanding is correct, a Nvidia graphic card that support NVENC & NVDEC should support h264_cuvid decoder in FFmpeg as well. 1. Dec 2, 2021 · おかげさまで上記記事については一定数のニーズがあるようで、cudaのバージョンが上がったりnvidia video codecのバージョンが上がったり、ubuntuのlts版のバージョンが上がったりするたびにメンテナンスをしておりまして、未だ参考にしていただいてることに感謝いたします。 Sep 4, 2018 · Unfortunately, that is all the information I have been given. None of them is exactly the same. Dec 24, 2017 · NVDec is simply a marketing rebranding of CUVID. The test was based on the Big Buck Bunny movie and the procedure should be self-evident from the commands below, but roughly: transcode the original to NV12 lossless, use this as the base for comparison create an interlaced version deinterlace with May 5, 2017 · "According to LAV Filters author, CUVID and Intel QuickSync are outdated, DXVA copy-back (direct mode) beats them both in performance. AxeMan. Oct 21, 2016 · CUVID - done (multi-platform, not linked to CUDA/CUVID librarirs), please test :) and comparing to vdpau I didnt notice any difference in performance, maybe little bit worse quality in vdpau. performance chart for the Ducks Take Off sequence with the Video Codec SDK 9. Both use a dedicated video engine. Quality vs. Maximizing the transcoding speed also means making sure that the decoded image is kept in GPU memory so the encoder can efficiently access it. Jan 6, 2021 · Then you can run the following with h264_cuvid and test vs h264: import av from datetime import datetime video_path = "some_file. The hardware capabilities of NVENC and NVDEC are exposed in the NVIDIA Video Codec SDK through APIs (herein referred to as NVENCODE API and NVDECODE API), by which the user can access the hardware acceleration abilities of NVENC and NVDEC. Benchmark NVDEC with StreamReader Sep 10, 2017 · Hi ffmpeg is running ok with cuda 9. js NVDEC accelerator -hwaccel cuda is preferred to the legacy CUVID decoder, so the h264_cuvid is not required unless you want to use it's builtin resize and deinterlace function. /configure --enable-cuda --enable-nvenc --enable-cuvid Then, I used ffmpeg with the following command line: ffmpeg. " I have an NVIDIA 1080ti and haven't been able to notice a difference between the options (D3D11 vs. it seems to function similarly if I replace nvdec w cuda or cuvid. mkv 这种情况，解码器会将解码后的数据拷贝到系统内存。 完全硬件转码. 264. 1 presets. The software API, hereafter referred to as NVDECODE API lets developers access the video decoding features of NVDEC and interoperate NVDEC with other engines on the GPU. 265 results comparison. 1 I suddenly don't get any buffer underflow errors. Sep 24, 2021 · -hwaccel cuda -hwaccel_output_format cuda -c:v hevc_cuvid -i file-hwaccel cuda -hwaccel_output_format cuda -i file. LS h264 H. 264, H. 15. Sep 17, 2017 · copy-back unless you use MadVR where it can automatically switch to native if needed for improved performance. The plugin accepts an encoded bitstream and uses the NVDEC hardware engine to decode the bitstream. I understand that the problem with the CUVID parser callbacks not being called is usually caused by improper initialization of the stream according to this topic. ts -f mpegts C:\a-3-nvdec. A generic DXVA implementation may have some small issues, occasionally. 264 (3840x2160) 30 fps video to HD H. ts is a 1080i50 file: ffmpeg -hwaccel cuvid -c:v h264_cuv…. (MPV can use nvdec properly on both machines, for instance. -hwaccel cuvid is deprecated and replaced by -hwaccel cuda -hwaccel_output_format cuda. cuvid is noticably (although not drastically) faster. Nov 28, 2022 · So this issue was opened many times before. Best, Tom. 265, AV1, JPEG and MJPEG formats. mp4 Jan 11, 2024 · FFmpeg 支持 NVIDIA 的 NVDEC（NVIDIA 视频解码器）和 NVEnc API，分别用于硬件加速视频解码和编码。 解码 h264,重新编码到 15fps h. What I've managed to do is a double shot copy using 2 d3d11 textures (luma + chroma), 2 and NVDEC, respectively, in the rest of the document. Here is the final test of speed comparison using 3 levels of hardware acceleration. Benchmark NVDEC with StreamReader Jun 13, 2017 · CUVID. mp4 -vf scale_npp=-1:720 -c:a copy -c:v h264_nvenc -b:v 5M output2. Full hardware transcode with CUVID and NVENC: ffmpeg -hwaccel cuvid -c:v h264_cuvid -i input -c:v h264_nvenc -preset slow output. Benchmark NVDEC with StreamReader You signed in with another tab or window. One of the reasons to use hardware accelerated decoding is to reduce power consumption. ffmpeg -c:v h264_cuvid -i input output Full hardware transcode with NVDEC and NVENC: ffmpeg -hwaccel cuda -hwaccel_output_format cuda -i input -c:v h264_nvenc -preset slow output If ffmpeg was compiled with support for libnpp, it can be used to insert a GPU based scaler into the chain: 1. However, on the Jetson AGX Xaview, the ffmpeg command outputs: DEV. CUVID forces the graphics card into its highest performance state. 5 days ago · 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. Experimental, is known not to correctly check whether decoding is supported by the hardware at all. ie, the maximum Nov 16, 2018 · In order to prefer usage of -hwaccel nvdec vs -hwaccel cuvid we have to make used surfaces configurable and make memory allocation similar to -hwaccel cuvid, and of course the issue with -bf 3 on ffmpeg-git and ffmpeg-4. [2] NVDEC is a successor of PureVideo and is available in Kepler and later NVIDIA GPUs. 命令解释：-hwaccel cuvid ：指定要使用的硬件加速API（CUDA视频解码器）。 "Using the hardware encoder NVENC and decoder NVDEC requires adding some more parameters to tell ffmpeg which encoder and decoders to use. But I haven’t found any guide for NVDEC/CUVID. 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。 May 7, 2018 · Hi It seems this whole situation is starting to get a little bit more complex. ts is a 1080i50 file: ffmpeg -hwaccel cuvid -c:v h264_cuvid -deint adaptive -resize 1280x720 -f mpegts -i input. ffmpeg -hwaccel cuvid -c:v h264_cuvid -i input. Any help is appreciated. 264, HEVC, MJPEG, MPEG-1/2/4, VP8/VP9, VC-1, AV1. Attachments (1) 20181227_nvdec_decode_deint. mkv 加了 -hwaccel cuvid之后，这种情况完全通过显卡GPU完成。 None of them is exactly the same. It seems this is never going to be updated given that NVIDIA now have nvdec. You signed out in another tab or window. i get screens of errors then it completed the test as expected. open(video_path May 6, 2018 · ffmpeg 4. DXVA2 cb vs. Notices 2. VDPAU hasn’t been updated for a while, and is now missing HEVC 10-bit and VP8/VP9 support. However, the GLX part of libva has seemingly been deprecated, with In the following sections, we build FFmpeg 4 libraries with NVDEC support and enable hardware acceleration through TorchAudio’s StreamReader API. 04), if that should be a problem. The newest native/copy-back such as nvdec/copy, d3d11va/copy, vaapi/copy, and so on should be safe Mar 8, 2024 · NVIDIA provides software API and libraries for programming NVDEC. These methods differ in how they handle textures in-flight on the accelerator, and it is wise to evaluate other Nov 14, 2018 · Out of curiosity I just ran some tests to get an idea of the difference in quality, if any, between yadif, yadif_cuda, cuvid deint and mcdeint. 265 there are NAL units, which are part of the encoded r/Windows11 • Switching File Explorer to and from full screen (F11) drastically improves performance, folder listing, thumbnails generate instantly + search works flawlessly! Mar 11, 2021 · Nvidia NVDEC ffmpeg Nvidia CUVID HW VAAPI ffmpeg 2 AxeMan 24 Posted March 12, 2021. It supports H. NVDEC offers decoders for H. no: keep inactive decoder alive ; destroy: destroy inactive nvdec is a newer implementation of CUVID/CUDA decoding, which uses the FFmpeg decoders for file parsing. The bicubic looks close as well. You switched accounts on another tab or window. Apr 6, 2022 · The green artifacts with HEVC_cuvid are a know issue, that's why HEVC_nvdec is the default. 5GHz. Oct 26, 2021 · The hardware encoder and hardware decoder are referred to as NVENC and NVDEC, respectively, in the rest of the document. Aug 5, 2020 · Just wanted to note here that `cuvid` has been renamed to `nvenc/nvdec`! On newer releases (e. More universal decoder is DXVA2 (copy-back) 3 Reply by otic 10-09-2021 07:28:29. Last known version to work OK is 3. sym dfutlahw irnmkdk vzzhnb znr cgo lasadj vzwtkdpn goos nypc