Cuvid vs nvdec. 264 (3840x2160) 30 fps video to HD H.

Cuvid vs nvdec 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. Codec support varies by hardware (see the GPU compatibility table). $ ffmpeg -c:v h264_cuvid -hwaccel nvdec -resize 1280x720 -i INPUT -vcodec h264_nvenc -b:v 5M -acodec copy OUTPUT . 265 there are NAL units, which are part of the encoded Aug 5, 2020 · Just wanted to note here that `cuvid` has been renamed to `nvenc/nvdec`! On newer releases (e. 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. Experimental, is known not to correctly check whether decoding is supported by the hardware at all. 04 OBS Studio version: 25. /configure. And I have to add that CPU is around 10% for all processes during playing and GPU is around 5% . 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. 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. Ffmpeg have to use mps to share the same context as usually multiple encoding/decoding sessions use multiple ffmpeg processes. More universal decoder is DXVA2 (copy-back) 3 Reply by otic 10-09-2021 07:28:29. The libva-vdpau-driver project gave us a VA-API implementation on-top of VDPAU. no: keep inactive decoder alive ; destroy: destroy inactive NVIDIA provides software API and libraries for programming NVDEC. ts -vcodec h264_nvenc -preset slow -c:a copy -r 50 -f mpegts output. 264 (3840x2160) 30 fps video to HD H. Unrelated: The following have no effect, removing them makes debugging easier:--enable-asm --enable-yasm --disable-libopenjpeg --enable-decoder=tscc 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。 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. Benchmark NVDEC with StreamReader You signed in with another tab or window. CUVID offers decoders for H. or Mar 30, 2019 · Recent ffmpeg versions fail to use the deinterlacer of nvdec (cuvid). 2 (Ubuntu 22. Where possible, stick to yadif_cuda and nvdec hwaccel instead for performance and stability reasons. Oct 11, 2024 · I struggle with compiling ffmpeg for Jetson Orin NX with hardware acceleration enabled I checked the default package using this command ffmpeg -hwaccels and I saw that only cuda and drm are enabled Nov 22, 2018 · I believe that the nvdec and vdpau deinterlacers are the same but they dont’t have to be - I know the nvdec one is at least partially implemented as CUDA code. mp4 Figure 4. Usually people having streams of packets and feeding them to the NVDEC. " "Using the hardware encoder NVENC and decoder NVDEC requires adding some more parameters to tell ffmpeg which encoder and decoders to use. One of the reasons to use hardware accelerated decoding is to reduce power consumption. Unfortunately I discovered that nvidia HW decoding is broken on my platform so even vlc doesn’t help. Examples from FFmpeg Wiki: Hardware Acceleration - NVDEC. png Sample H. Is either of nvdec/cuvid the recommended one to use? Is either one deprecated? 2. ts (ffmpeg -c:v h264_cuvid -i C:\a-3. If this command does not work, then there is an issue with Nov 30, 2017 · Stack Overflow | The World’s Largest Online Community for Developers Oct 22, 2020 · You may be able to use hardware accelerated decoding. exe -framerate 24 -i 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？. 8 everything works fine, with 3. patch ( 48. Reply reply More replies More replies nvdec is a newer implementation of CUVID/CUDA decoding, which uses the FFmpeg decoders for file parsing. Newer versions drop frames. Im using H264_nvenc for encoding it, and trying to use h246_cuvid for the decoding, but FFMPEG can't find the decoder. cuvid is noticably (although not drastically) faster. Jun 13, 2017 · CUVID. It uses nvidia 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. NVIDIA Video Decoder (NVCUVID) For NVIDIA Video Decoder (NVCUVID) use the NVIDIA Video Codec SDK. Last known version to work OK is 3. 8. I don't have any source video (H. However if i change -hwaccel cuvid -c:v h264_cuvid with -hwaccel nvdec it works. 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. exe -hwaccel cuvid -c:v h264_cuvid -i video. g. 3. May 5, 2017 · "According to LAV Filters author, CUVID and Intel QuickSync are outdated, DXVA copy-back (direct mode) beats them both in performance. Share Nov 11, 2019 · I'm trying to encode, apply a filter and decode a video through GPU. 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. 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. 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. CUVID forces the graphics card into its highest performance state. 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 ffmpeg: NVidia hardware encoder `h264_nvenc` and hardware decoder `h264_cuvid` - Documentation (Nov 2020) - ffmpeg -h decoder=h264_cuvid 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. Example output for mpeg2_cuvid decoder: Aug 28, 2020 · I'm trying to encode a thousand or so of pictures into a time lapse video. Apr 28, 2018 · If cuda/cuvid/nvdec is requested, ffnvcodec should be built #105. Both will output cuda surface. 1. No luck so far. ts) in FFmpeg, and the video can only output 468 frames; Try using NVDEC(ffmpeg -hwaccel nvdec -i C:\a-3. Notice . Now it should be the same performance as VDPAU. Extra pointers: Apr 6, 2022 · The green artifacts with HEVC_cuvid are a know issue, that's why HEVC_nvdec is the default. 1 presets. Full hardware transcode with CUVID and NVENC: ffmpeg -hwaccel cuvid -c:v h264_cuvid -i input -c:v h264_nvenc -preset slow output. However, on the Jetson AGX Xaview, the ffmpeg command outputs: DEV. mp4 -vf scale_npp=-1:720 -c:a copy -c:v h264_nvenc -b:v 5M output2. 264, H. 0rc until I want to deinterlace with cuvid instead yadif filter. 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. Mar 8, 2024 · NVIDIA provides software API and libraries for programming NVDEC. Steps to reproduce: Put this content into ~/. (You can see it in nsight) The vdpau deinterlacer can be used with frame readback but as it is part of the presentation mixer you can only read back post processed rgb frames, making it generally unsuitable for transcoding vs real The following command fetches video from remote server, decode with NVDEC (cuvid) and re-encode with NVENC. 265, AV1, JPEG and MJPEG formats. Can I use this in the current Emby version 4. 2 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. mp4" -c copy -c:v:0 hevc_nvenc -profile:v main10 -pix_fmt p010le -rc:v:0 vbr_hq -rc-lookahead 32 -cq 21 -qmin 1 -qmax 51 -b:v:0 10M -maxrate:v:0 20M -gpu 0 "output. Quality vs. 2 minutes for a single file. Level-2 vs. ffmpeg -hwaccel cuvid -c:v h264_cuvid -i input. conf: vd-lavc-threads=8 hwdec=nvdec ao=pulse vo=gpu deband=yes scale=ewa_lanczossharp cache=yes cache-pause-initial=yes cache-pause-wait I've only newly come to this and been experiementing with getting nvdec working. 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. 33. Also note, that neither command line construction will result in the use of nvenc on the encode side. You switched accounts on another tab or window. performance chart for the Ducks Take Off sequence with the Video Codec SDK 9. May 7, 2018 · Hi It seems this whole situation is starting to get a little bit more complex. Codec support varies by hardware. ts is a 1080i50 file: ffmpeg -hwaccel cuvid -c:v h264_cuv… Mar 11, 2021 · Nvidia NVDEC ffmpeg Nvidia CUVID HW VAAPI ffmpeg 2 AxeMan 24 Posted March 12, 2021. Both use a dedicated video engine. NVDEC supports much faster than real-time decoding which makes it suitable for transcoding scenarios in addition to video playback. A note to remember, is that neither one is native cuda decoding. Sep 11, 2021 · NVIDIA CUVID Intel QuickSync. mp4 -c:v h264_nvenc -r 15 output. 264, HEVC, MJPEG, MPEG-1/2/4, VP8/VP9, VC-1, AV1. When I control available decoders using “ffmpeg -decoders | grep cuvid”, it gives the response given below. mp4 small2. ie, the maximum Jun 17, 2020 · My board is GeForce RTX 2060 and I want to decode h. 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. 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. A generic DXVA implementation may have some small issues, occasionally. and ffmpeg -c:v h264_nvenc -hwaccel_output_format cuda A guide with shell script can quickly help you to compile latest ffmpeg with Nvidia CUDA - zshnb/ffmpeg-gpu-compile-guide Dec 5, 2018 · What works great in mpv, VDPAU or NVDEC? It’s beside the point since mpv doesn’t support UPNP mpeg2 streams. js 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. 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. Any ideas why and what's is difference(and which one is better) between cuvid and nvdec Oct 28, 2024 · NVDEC/CUVID. This post demonstrates which decoder configuration parameters impacts the video memory usage and how to configure them optimally. 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. NVDEC engine on NVIDIA GPUs decodes the input video bitstream in supported formats. We used two different input sequences for comparison: Jockey and Kayaking. 4. Regular; 24 157 1 Author; Posted March 12 NVIDIA VIDEO DECODER (NVDEC) INTERFACE PG-08085-001_v07 | 1 Chapter 1. This tutorial shows how to use NVIDIA’s hardware video decoder (NVDEC) with TorchAudio, and how it improves the performance of video decoding. Old behavior (with first temporary commit, data copy from GPU to CPU memory) is available in CUVID settings. Replying to oromit:. 265 encoded video using gpu-accelerated ffmpeg. CUVID, which is also called NVDEC by NVIDIA now, can be used for decoding on Windows and Linux. Apr 27, 2022 · I try to develop streaming program,I have 4k videos that 5 fps and 20 seconds, I encode frames with cuda encoder successfully, i send encoded data over rtp successfully but when i try to decode tha Jan 3, 2021 · Here is a command I use to convert videos from AVC to HEVC 10-bit using Pascal encoder (GTX 10x0 cards): ffmpeg -y -hide_banner -hwaccel nvdec -hwaccel_device 0 -vsync 0 -i "input. 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. Thank you for the quick reply Tom. Jan 23, 2018 · It seems that FFmpeg cannot recognize my GPU as a supported device to decode but I have read that Nvidia has support for my card with NVDEC. 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. While cuvid makes a vram-internal copy, and thus can work with a minimal buffer and potentially zero copies all the way through nvenc. However, the GLX part of libva has seemingly been deprecated, with 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. Apr 20, 2023 · NVIDIA provides software API and libraries for programming NVDEC. 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. 命令解释：-hwaccel cuvid ：指定要使用的硬件加速API（CUDA视频解码器）。 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. To use the new style nvdec hwaccel: $ ffmpeg -hwaccel nvdec small. Mar 26, 2024 · It lights up all of the CUDA cores of the GPU to perform the functionality. The plugin accepts an encoded bitstream and uses the NVDEC hardware engine to decode the bitstream. ffmpeg -c:v h264_cuvid -i input output. I am running Windows 10 64 bits with i7 4790 and GTX 1080 ffmpeg Apr 19, 2024 · I am implementing a video decoder using NVidia's NvDec CUVID feature. Benchmark NVDEC with StreamReader None of them is exactly the same. 2 Driver 440. But using in Potplayer as video decoder Nvidia Cuda decoder I got fps around 17fps at 25fps video. The newest native/copy-back such as nvdec/copy, d3d11va/copy, vaapi/copy, and so on should be safe ESP32 is a series of low cost, low power system on a chip microcontrollers with integrated Wi-Fi and dual-mode Bluetooth. CUVID and the other one would be about client capabilities. Apr 10, 2023 · I am implementing a video decoder using NVidia's NvDec CUVID feature. 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. Apr 30, 2019 · Nvdec is ffmpeg's use of cuda. Notices 2. Attachments (1) 20181227_nvdec_decode_deint. Thanks folks, thats what I thought and why I picked the Nvidia option in the first place. nvdec works in mpv. Libav picked up NVDEC support first, then FFmpeg and GStreamer followed in 2017. The bicubic looks close as well. 264 (1920x1080) on i7-4770K 3. Very usable function if you need to know all available options supported by specific encoder or decoder: $ ffmpeg -h encoder=h264_nvenc. The Level-3 hardware acceleration amazes us with up to 133 fps. Sep 10, 2017 · Hi ffmpeg is running ok with cuda 9. 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. h264 decoding pure cpu mode soft decoding, the measured delay is about 220ms, where len = avcodec_decode_video2(avctx, frame, &got_frame, pkt) function takes about 6-13ms; h264 Accelerated video decoding with NVDEC¶. Benchmark NVDEC with StreamReader Sep 9, 2018 · ffmpeg # CUDA/CUVID/NVDEC # 完全硬件转码 vs 部分硬件转码. mkv ffmpeg finishes and seems to be unable to open cuvid functions: Cannot load cuvidGetDecoderCaps [h264_cuvid @ 07047b80] Failed loading nvcuvid. I stole it from the tdarr log. That can be done with the dedicated yadif_cuda filter or if you're using the CUVID H/W wrappers such as h264_cuvid. ts With 3. Author: Moto Hira. config/mpv/mpv. 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. Dec 27, 2024 · Hardware Acceleration: Level-1 vs. 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. VLC built with NVDEC support would be a godsend if it works. r/Windows11 • Switching File Explorer to and from full screen (F11) drastically improves performance, folder listing, thumbnails generate instantly + search works flawlessly! Nov 15, 2018 · Recent ffmpeg versions fail to use the deinterlacer of nvdec (cuvid). 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, -- and NVDEC, respectively, in the rest of the document. 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%. 0. . 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. Sep 24, 2021 · -hwaccel cuda -hwaccel_output_format cuda -c:v hevc_cuvid -i file-hwaccel cuda -hwaccel_output_format cuda -i file. The first one will use old cuvid decoder path and the second one use nvdec accelerator path. Aug 14, 2020 · To use the video memory efficiently, particularly when running multiple instances of NVDEC decoding, it is important to ensure that the decoder is configured for most optimum memory utilization. Sample decode using CUDA/NVDEC: ffmpeg -hwaccel cuda -i input. H. 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. and NVDEC, respectively, in the rest of the document. But if I use nvidia-cuda-mps, then there is no performance hit. 5GHz. So I think the answer of @halfelf was wrong. Best, Tom. AxeMan. By the way, no problem for ‘h264_cuvid’. May 17, 2017 · I am implementing a video decoder using NVidia's NvDec CUVID feature. 03 GPU: M4000 DRIVER: 384. Sep 17, 2017 · copy-back unless you use MadVR where it can automatically switch to native if needed for improved performance. Could you please follow the suggestions/questions from @Happy2Play ? On 9/24/2020 at 3:57 AM, RaptorCentauri said: $ ffmpeg -hwaccel cuvid -c:v h264_cuvid small. "NVIDIA CUVID (old)"). For that, you need: $ ffmpeg -hwaccel cuvid -c:v h264_cuvid small. Is there any meaningful difference between the following opening commands? Is there an advantage to using one over the other? As I understand it, cuvid is now depreciated? ffmpeg -c:v h264_cuvid -hwaccel cuvid . Also, the machine where this doesn't work is actually newer and has a more recent May 22, 2020 · I'm trying to copy the NV12 NVDEC decoded buffer directly into an NV12 d3d11 texture. We try to convert a 4K H. 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 Nov 28, 2022 · So this issue was opened many times before. Jul 8, 2024 · Hi all, I am using NVDEC with FFMPEG to decode videos and I am seeing decoding time slower than multicore CPU decoding. [2] NVDEC is a successor of PureVideo and is available in Kepler and later NVIDIA GPUs. Works with Vulkan too. mp4. 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. Postprocessing may also use CUDA capabilities. Here is the final test of speed comparison using 3 levels of hardware acceleration. i get screens of errors then it completed the test as expected. conf, results in software decoding. See the LICENSE file for more details. 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. NVDEC is a new API for accessing the GPU of NVidia devices. In combination with NVENC, it offers full hardware transcoding. LS h264 H. mp4" video = av. mp4 -c:v h264_nvenc small2. 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 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. cuvid does not auto-detect the decoder. None of them is exactly the same. NVDEC offers decoders for H. Hardware-Based Decoder and Encoder NVIDIA GPUs contain one or more hardware-based decoders and encoders (separate from the CUDA cores) which provide fully accelerated hardware-based video decoding and 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. In the following sections, we build FFmpeg 4 libraries with NVDEC support and enable hardware acceleration through TorchAudio’s StreamReader API. These methods differ in how they handle textures in-flight on the accelerator, and it is wise to evaluate other I have an NVIDIA 1080ti and haven't been able to notice a difference between the options (D3D11 vs. 4 KB ) - added by Peter Bennett 6 years ago . I captured a trace using nsys and attached is a screenshot demonstrating the issue. Now, just running a quick test using ffmpeg 4. 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. We then compare the time it takes to decode the same MP4 video with CPU and NVDEC. NVENC and NVDEC support the many important codecs for encoding and decoding. cuvid: use dedicated video engines directly; cuda: use a CUDA-based decoder if faster than dedicated engines; dxva: go through DXVA internally if possible (requires D3D9) fmode (enum, default: gl): frame output mode. 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. Reload to refresh your session. 1 I suddenly don't get any buffer underflow errors. 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. Nov 8, 2022 · With complete decoding offloaded to NVDEC, the graphics engine and CPU are free for other operations. VDPAU hasn’t been updated for a while, and is now missing HEVC 10-bit and VP8/VP9 support. Dxva is Microsoft's implementation. 04), if that should be a problem. -hwaccel cuvid is deprecated and replaced by -hwaccel cuda -hwaccel_output_format cuda. Check all available options for encoder h264_nvenc. It appears that most of the time is spent in avcodec_send_packet. 4 Current Behavior OBS should use hardware acceleration decoding on nvidia with media plugin or vlc plugin or blackmagic but not. copy: each frame is copied and dispatched Hi, I know it is not best combination H265+mp3 either in MP4 or MKV. ts -f mpegts C:\a-3-nvdec. 04. FFMPEG seems like the easiest solution, and i manage just fine with the command: C:\\ffmpeg\\bin\\ffmpeg. png Apr 7, 2020 · Platform Operating system and version: Linux Ubuntu Mate 18. † For details on NVDEC and FFmpeg, please refer to the following articles. Dec 24, 2017 · NVDec is simply a marketing rebranding of CUVID. Example command, input. Jul 24, 2019 · NVIDIA GPUs ship with an on-chip hardware encoder and decoder unit often referred to as NVENC and NVDEC. 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. 0 without the green artifacts? Unfortunately I still have ffmpeg in version 4. Aug 14, 2020 · The h264_cuvid is what gets used to decompress my 4K video on my RTX board. Environment: Ubuntu 18. 4 and above Note that NVENC on Turing does not handle interlaced content, and as such, deinterlacing is mandatory. open(video_path Apr 10, 2023 · I am implementing a video decoder using NVidia's NvDec CUVID feature. 1 has to be fixed as well. Closed jesusdf opened this issue Apr 28, 2018 · 3 comments Closed I'm using GPU acceleration on a Nvidia Quadro K2200 to encode h. 264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (decoders: h264 h264_v4l2m2m h264_vdpau ) (encoders: libx264 libx264rgb h264_omx h264_v4l2m2m h264_vaapi ) Oct 26, 2021 · The hardware encoder and hardware decoder are referred to as NVENC and NVDEC, respectively, in the rest of the document. ie, the maximum 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. 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 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. 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. It seems this is never going to be updated given that NVIDIA now have nvdec. 264 / H. OS: Unbuntu 16. 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). ts is a 1080i50 file: ffmpeg -hwaccel cuvid -c:v h264_cuvid -deint adaptive -resize 1280x720 -f mpegts -i input. ts is a 1080i50 file: ffmpeg -hwaccel cuvid -c:v h264_cuv… Mar 19, 2018 · #7582 (hwaccel cuvid/nvenc performance degredation when using aq (temporal-aq or spatial-aq) with multiple concurrent encodes) – FFmpeg. 69 CUDA: 9. 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. 01 When I run related command I get " Unknown decoder ‘h265_cuvid’ ". mp4 -vf fps=1/2 output-%04d. 1. To the eyes of authors, lanczos(1) appears to be most similar to NVDEC. 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. Oct 26, 2021 · NVIDIA provides software API and libraries for programming NVDEC. However, I have found official tutorial from NVIDIA for compiling FFMPEG from source with NVENC enabled. 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. It supports H. /configure --enable-cuda --enable-nvenc --enable-cuvid Then, I used ffmpeg with the following command line: ffmpeg. Note that FFmpeg offers both NVDEC and CUVID hwaccels. But I haven’t found any guide for NVDEC/CUVID. 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 Aug 10, 2012 · The OSS Gst-nvvideo4linux2 plugin leverages the hardware decoding engines on Jetson and DGPU platforms by interfacing with libv4l2 plugins on those platforms. mkv video. ```MIT LicensePermission is hereby granted, free of charge, to any person obtaining a copyof this software and associated documentation files (the "Software"), to dealin the 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. For that vlc is needed. 04 Cuda 10. ts) and soft decoding to output a complete 471 frames. 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. it seems to function similarly if I replace nvdec w cuda or cuvid. 哔哩哔哩 (゜-゜)つロ 干杯~-bilibili Sep 23, 2020 · One would be related to NVDEC vs. Ubuntu 20. So just use D3D11 either native or copy-back, based on if you need additional CPU processing. When I check Oct 21, 2020 · I tested and decoded the h264 stream on jetson xaiver. Nov 8, 2022 · The hardware encoder and hardware decoder are referred to as NVENC and NVDEC, respectively, in the rest of the document. -cfg=temp:cuvid_lib=PATH_TO_CUDA. NVDEC decodes the compressed video streams and copies the resulting YUV frames to video memory. (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. 04) the command for this is now `gphoto2 --stdout --capture-movie | ffmpeg -hwaccel nvdec… The absolute path to cuvid lib can be set using the cuvid_lib option in core or temp section of the config file, e. Any help is appreciated. Level-3. Oct 4, 2018 · Recent ffmpeg versions fail to use the deinterlacer of nvdec (cuvid). 0RC103 FFMPEG: latest from GIT ffmpeg -c:v h264_cuvid -resize 1280x720 -deint 2 -i udp://@239. 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. The hardware capabilities available in NVDEC are exposed through APIs referred to as NVDECODE APIs in this document. The code looks like as follows: void decodeOneFrame() { nvtx3::scoped_range function_range{"decodeOneFrame"}; while (true Oct 16, 2021 · 4 cortex-a57 cores able to achieve almost the same decoding speed as NVDEC DSP with an ffmpeg implementation; two ffmpeg decoding processes may be started simultaneously and fps won’t drop: each will still be decoding 120fps this means there are many hardware resources remains available when only one ffmpeg process is running Mar 5, 2024 · vmode (enum, default: cuvid): video decoder backend. Mar 17, 2023 · ffmpeg 的 hwaccels 只有 cuda 没有 cuvid，仍可以使用 NVIDIA GPU 进行视频硬件加速。[END]>```## LicenseThe code in this repository is licensed under the MIT License. I am also able to transcode using the cpu using the following code with the fluent-ffmpeg library for node. mkv" Accelerated video decoding with NVDEC¶. 2. Nov 13, 2022 · Playing H264 or H265 video in mpv with NVDEC enabled doesn’t work: the video player window doesn’t open, the player exits after printing the list of audio/video streams in the file and no errors. 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. 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. Sep 30, 2024 · TL;DR Version - Major Update 1. Maximizing the transcoding speed also means making sure that the decoded image is kept in GPU memory so the encoder can efficiently access it. 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 Mar 10, 2022 · 3. (MPV can use nvdec properly on both machines, for instance. And I'd assumed random dithering would be less visible, and should take very little effort (extra work). According to chapter 2 of the (woefully inadequate) manual, decoding limits are specified by GPU architecture. You signed out in another tab or window. 1 DECODING & INTEROPERABILITY Latest Git build, but it's been this way for as long as I've had my GTX 1050 (a few months) Windows 10 Reproduction steps Using hwdec=cuda or hwdec=nvdec in the mpv. Options¶ num_surfaces (uint, default: 20): number of hardware surfaces to allocate unload (enum, default: no): decoder unload mode . Make sure you're using vulkan or opengl vo=gpu gpu-api=vulkan hwdec-codecs=all ctrl + h when the video is playing to switch to hardware acceleration Press the 'i' key to check whether nvdec is being used. 265 results comparison. nvdec keeps more of a buffer, because it hands through the directly mapped frames from the driver. 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. Video apps and streaming enabled by NVENC and NVDEC on consumer laptops, desktops and datacenters ensure optimized performance across platforms. . 264. 264, HEVC, MJPEG, MPEG-1/2/4, VP8/VP9, VC-1. According to this, this and this I understand that in h. They differ in how frames are decoded and forwarded in memory. adding --enable-nvdec returns unrecognized option during . all you need is: ffmpeg-i input -c:v h264_nvenc -profile high444p -pixel_format yuv444p -preset default output. 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. DXVA2 cb vs. 264 decode using CUVID: ffmpeg -c:v h264_cuvid -i input. 1 not only including new content and game changes, but also tons of fixes on our side to make your experience better. First, I tried to use the jetson-ffmpeg library to enable the h264 and h264_nvmpi decoders to decode (codec = avcodec_find_decoder_by_name(“h264_nvmpi”);).