Directx video acceleration dxva is a microsoft api specification for the microsoft windows and xbox 360 platforms that allows video decoding to be hardwareaccelerated. This dedicated accelerator supports hardware accelerated. The dxva is used by software video decoders to define a codecspecific pipeline for hardwareaccelerated decoding and rendering of the codec. To know if you should enable or not these options, follow this guide. May 24, 2017 this document is the specification for support of scalable video coding svc according to the h. Obviously this has a lot to do with the particular implementation of the shader hardware, but there may also be inherent video colourations from using the graphics chip to. You also choose hardware or a software encoder, also called live stream encoding software, the most popular choice for transmitting your video to your viewers in an accessible formats. Download article download enabling highperformance video encoding, decoding, and preprocessing pdf 619kb. Intel qsv cpu hardware decoding, nvidia cudanvdec and amd app gpu hardware decoding, which can jointly work together to tremendously improve 4k video decoding speed up to 58x faster. Directx video acceleration api, developed by microsoft. Dxva checker is a freeware directx video acceleration software app filed under video codec packs and made available by bluesky for windows.
Furthermore, you can set change in some directshowmedia foundation decoders and confirm effects by changing video processor and. Dxva2 not supported in lav video decoder community. By combining the software encoding quality for which mainconcept has been known for years with the performance of hardware processing, the latest hevch. On performance gpu tab windows 10 added a graph for video encoding separate from the normal gpu graph, it should be maxing at at 100% during encoding. Gpu to accelerate decoding of video streams depending on the video codec. If your computers cpu can handle it, and it doesnt make your cpu fans loud or anything like that, then you might as well just use software decoding. Hi, im facing a trouble with enabling dxva2 support in lav video decoder. A guide on how to configure potplayer video player to use hardware acceleration using either directx video acceleration dxva, compute. Dec 04, 2018 whats better, this 4k video processing software supports various types of hardware decoding. The hevc encoder is a software implementation on intel x86 based platforms, capable of high definition hd broadcast quality video encoding. I want to know the differences between the two guids. I have libreelec with kodi 16 and im just curious about software video decoding. Apr 09, 2016 hi, im facing a trouble with enabling dxva2 support in lav video decoder. Software codecs and software video processors can use dxva to offload certain cpuintensive operations to.
The vlc media player framework can use your graphics chip a. Directx video acceleration dxva is a microsoft api specification for the microsoft windows. Software codecs and software video processors can use dxva to offload certain cpuintensive operations to the gpu. Download directx video acceleration specification for h. Gpu to accelerate decoding of video streams depending on the video codec, graphic card model and operating system. Divx software also enables hardware decoding of avc video in divx player through dxva on the intel core family. Record everything from your monitorscreenwindow or cameracapture card and live stream or save to your hdd as mp4mkv. This is a thread about all the problems regarding playback of files with dxva enabled, results from the discussion here regarding encoding settings should be discussed here. It has a laundry list of features, including the ability of h. Free software ads free download software and open source code but supported by advertising, usually with a included browser toolbar. Enabling highperformance video encoding, decoding, and.
This dedicated accelerator supports hardwareaccelerated. This sample programmatically generates video with a primary stream and a substream. The video is then processed and displayed using a dxva video processor. These tapped into the gpu capabilities using dxva dxva 2 apis on windows and vaapi. Free streamingrecording software obs can utilise both the intel qsv and nvidia nvenc hardware encoders, so it is good choice to test hardware accelerated video encoding. Enable hardware accelerated decoding via dxva2 in xbmc. High efficiency video coding implementations and products. By natively integrating the nvidia video codec sdk, xsplit is able to offload the video encoding for both the recording and the live stream from the cpu to the gpu, allowing our users to produce high quality content without compromising on gaming performance. The primary stream displays smpte color bars, and the substream is a semitransparent rectangle. Apr 21, 2019 dxva checker is a freeware directx video acceleration software app filed under video codec packs and made available by bluesky for windows.
The pipeline allows certain cpuintensive operations such as idct, motion compensation and deinterlacing to be offloaded to the gpu. The installation process of dxva checker is simple and straightforward, and its interface wont disappoint you either the application contains just a few tabs providing access to all its options. Latest driver for your video card from the manufacturers web site. Ati radeon hd 2000, 3000, 4000, 5000, 6000 series nvidia geforce gtx 200 series nvidia geforce 8000 series except 8800 gtsgtxultra, 9000 series and later anything released in 2008 or later 3. What is the relationship between hardware acceleration and dxva. The following things are chiefly possible for directx video acceleration dxva. Software decoding is superior to hardware decoding in this aspect. Hardware decoding vs software decoding in 4k h264h265 video. How to tell if a dxva decoder has fallen back to software decoding. Many users of freemake video converter heard of cuda and dxva technologies integrated into the software to speed up video conversion. Live switching, pictureinpicture and transitions make it a fullscale attack on encoding video. Telestream wirecast is one of the best professional level software encoders on the market. So, this gpu hardware encoding tech is specialized in video encoding and more importantly it takes almost no resource from cpu and gpu. I suggest lav, and configure them to use dxva copy back with the 1050 as the hardware device.
Download directx video acceleration dxva specification for. This specification assumes that you are familiar with the h. However, not all software functionality can be gpu assisted, e. No help file is offered, but on the other hand dxva checker is so simple to use that you dont need instructions. How to tell if a dxva decoder has fallen back to software. Dxva consists of a ddi for display drivers and an api for software decoders. If you want to see if hardware encoding is working in windows 10, just press ctrlaltdel to open task manager.
Directx video acceleration, or dxva, is microsofts technology for the windows vista, 7 and xbox 360 platforms that allows video decoding to be gpu accelerated. Divx software incorporates directx video acceleration dxva and intel quick sync video to use the media hardware for encoding and decoding video. The marjority of vso software video products supports hardware acceleration, but many users dont know what that means. Something like intel quicksync is a specific hardware encoder and has. In some cases, it can let the graphic card perform postprocessing and rendering of the decoded video. Ive noticed that dxva encoded movies dont look anywhere near as crisp as cpu encoded ones.
Nov, 2012 the marjority of vso software video products supports hardware acceleration, but many users dont know what that means. Whats better, this 4k video processing software supports various types of hardware decoding. The document describes highlevel design concepts and specific svc extensions to dxva interfaces and data structures of h. The decoder software available on arm cortextma9 and cortextma15 based socs allows a wide range of existing consumer electronics ce devices such as smartphones, tablets, smart tvs and settop boxes to. Defines extensions to directx video acceleration dxva to support decoding of h. Nero will soon support gpuaccelerated video encoding in its nero move it software. Divx software leverages intel quick sync video for h. The copyback variant does not have this limitation and works with every video.
Since software decoding can be updated via software, and can also be more tolerant of encoding errors and nonstandard settings, softwarecpu decoding can often give the best picture quality. Nvdecode api enables software developers to configure this dedicated hardware video decoder. Tl r wondering if its better sometime to use software decoders for quality reasons. Directx video acceleration dxva is an api and a corresponding ddi for using hardware acceleration to speed up video processing.
Mar 17, 2020 you also choose hardware or a software encoder, also called live stream encoding software, the most popular choice for transmitting your video to your viewers in an accessible formats. Confirmation of decoder device and processor device that can be used with gpu. Nero adds cuda to accelerate video encoding toms guide. However, not everyone knows how and when these technologies actually work and what real value they add. For example, can you enable dxva to leverage gpu based hardware performance and enable quicksync to leverage cpu based hardware acceleration. Potplayer is a dxva enabled, efficient media player.
Apr 20, 2019 the installation process of dxva checker is simple and straightforward, and its interface wont disappoint you either the application contains just a few tabs providing access to all its options. The mftrace output is very verbose and will normally let you know which mft is in use for the encoding. Oct 30, 2019 for example, you need to compare software vs. It may be disabled when installing or after installation. No help file is offered, but on the other hand dxva checker is. I read that fiji and some new amd apus supports hevc video decoding acceleration. High performance video encoding using nvidia gpus toms. A guide on how to configure potplayer video player to use hardware acceleration using either directx video acceleration dxva, compute unified device architecture cuda or high performance software decoding with softsubtitles support, ffdshow raw video filter postprocessing and also madvr. This type of hardware acceleration improves video encodingdecoding performance by routing work to the gpu integrated or discrete. Optional reallife test file to demonstrate hi10p encoding efficiency. In short, encoding is a crucial component with any of the available streaming solutions.
Directx video acceleration, or dxva, is microsofts technology for the windows vista, 7, 8, and later oss, which allows video decoding to be gpu accelerated. Then i found page showing output from dxva checker running on furyx. Dxva compatibility for software players thread this is a work in progress. Directx in general is a system for interfacing software and diverse. Obs studio also known as open broadcaster software is a free and open source software for video recording and live streaming. Confirmation of supported mode and usage condition in directshowmedia foundation decoder. Defines extensions to directx video acceleration dxva to support multiview video coding mvc according to the h. Hardware decoders will generate equivalent output to software decoders, but may. These tapped into the gpu capabilities using dxva dxva 2 apis on windows and. This document describes highlevel design concepts and specific mvc extensions to the. The equivalents of software decoding are 9 hrs for 1080p video decoding and 5 hrs for 4k uhd decoding.
It is powerful and it delivers great performance, both as a codec and as a postprocessing tool. Obviously this has a lot to do with the particular implementation of the shader hardware, but there may also be inherent video colourations from using the graphics chip to do this jobthis is a guess really. Dxva compatibility for software players thread doom9s forum. Wirecast has some great sports features as well that, in my opinion. The limitation that the video decoder must be connected directly to the video renderer only applies the the native variant of dxva. What is the relationship between hardware acceleration and. Dxva checker is an application that will provide you with various information about your decoder device and processor device that can be used with gpu.
Y530 is more than powerful enough to be used for video editing, but since its considered a gaming laptop its best to test it with gaming in mind. Thats to say, it doesnt play any role if the job is nothing related to video encoding. Dxva is used for playback of mpeg4asp most standard definition video and h. So, if youre a kmplayer user or a windows user whos looking for a more efficient, easy to use, lightweight most of the time, free media player that can be used to play almost all audiovideo codecs, then although it is still a beta software, i highly recommend potplayer dear kmplayer developers, thank you. Try dvdfab and download streaming video, copy, convert or make blurays and dvds. What is the relationship between hardware acceleration and dxvaquicksynccuda.
Now that you know what an encoder does, lets take a closer look at the two different types of encoders. For the time being, the best option for quick, highquality video transcoding is unfortunately to buckle down, get yourself a fast cpu, and run the best software encoder you can find which may be handbrake. Download directx video acceleration dxva specification. At this point its hard to tell whether its the hardware or software that is the. Yes, the software has a big chance to be more efficient if it takes full advantage of all possible hardware acceleration techs for its specific purpose, but thats also a lot more labor intensive to. On linuxx11, there are two competing interfaces for hardware video. Confirmation of usage condition in other applications by trace log. To conclude, ffdshow mpeg4 video decoder has all the qualities of a reliable software tool. With nvidia nvenc, single pc game streaming with xsplit has never been easier. I would suggest a gt 1030 if the card will only be used for video decoding. Many users of freemake movie converter heard of cuda and dxva technologies integrated into the software to speed up video conversion. During cebit 2009 this week, nero announced that it will be providing a free update for users of its nero move. This document is the specification for support of scalable video coding svc according to the h. Dec 18, 2018 nvidia nvenc, the successor to cuda, is a dedicated part of your gpu used to only hardware encode video 4k at faster speed.