It uses idirectxvideodecoderservicecreatevideodecoder to. By continuing to browse this site, you agree to this use. Configuring potplayer for gpuaccelerated video playback with. The new version is not compatible with older versions 1.
The software decoder also makes the computer you are using liquidsky on more slower if liquidsky is running in the backround. I also noticed that liquidsky with the software decoder seems somewhat blurrier than with the dxva decoder. Software codecs and software video processors can use dxva to offload. Directx video acceleration dxva is a microsoft api specification for the microsoft windows and xbox 360 platforms that allows video decoding to be hardware accelerated. Decoding and rendering benchmarks intels haswell an. In the default skin, go to system settings video playback. Software decoding is where you write and compile an application, meant to be run on a standard cpu, that will then decode the video. Hardware decoding vs software decoding in 4k h264h265 video. This site uses cookies for analytics, personalized content and ads. The main a6 processor is not using or spending cycles decoding video, it has essentially outsourced that job to a highly specialized worker. For example, a software decoder can offload the inverse discrete. What is the difference between hardware decoding and.
A small demonstration clip comparing real time hevc decoding on fgpa vs lagged software decoding. Since software decoding can be updated via software, and can also be more tolerant of encoding errors and nonstandard settings, software cpu decoding can often give the best picture quality. When you agree to the license agreement, you can install and use this software. To test and verify, while playing a video press the o key to enable the onscreen display. What is the difference between hardware decoding and software. It means there is a small chip on the motherboard specifically dedicated to decoding h264 video. In general, using the quicksync decoder results in a higher power consumption because the decoded frames are copied back to the dram before being sent to the renderer. The pipeline allows certain cpuintensive operations such as idct, motion compensation and deinterlacing to be offloaded to the gpu.
Using native dxva decoding, the frames are directly passed to the renderer without the copyback step. Its definitely not the most sophisticated program weve ever seen, but it seems to work fairly well if. When dxva2 is in use, on the 2nd line you will see dc. 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. According to lav filters author, cuvid and intel quicksync are outdated, dxva copyback direct mode beats them both in performance. The dxva is used by software video decoders to define a codecspecific pipeline for hardwareaccelerated decoding and rendering of the codec. Hardware decoding vs software decoding of hevc youtube. Encoding decoding free is a simple program that lets users easily encrypt and decode files. Intel quick sync video is a video encoding and decoding hardware within the. When you use a hardwarebased decoder, the video data is processed through a specific path that has dxva api calls for hardwareaccelerated decoding. The equivalents of software decoding are 9 hrs for 1080p video decoding and 5 hrs for 4k uhd decoding. Dxva2 native has its limitations, though i use it sometimes with interlaced video cause pci bus is too busy with traffic for copyback in this case.
How to tell if a dxva decoder has fallen back to software decoding. What is the difference between hardware decoding and software decoding. Softwarebased decoding is a different beast altogether. For example, a software decoder can offload the inverse discrete cosine transform idct to the gpu.
Software decoding is superior to hardware decoding in this aspect. So long as the instructions sets are the same, we are dealing with identical images, regardless of who manufactures the hardware. What i noticed was that the software decoder starts up more faster and has no green screen on startup while dxva always has a green screen and also takes some time to load. Cuda or high performance software decoding with softsubtitles support. Mftvideo decoder dxva fallback to software decode in a. The h264 mft doesnt expose whether it is using dxva for decoding or not. Hardware video acceleration encoding and decoding lenovo. This program is a tool to check about directx video acceleration dxva, and it has. Directx video acceleration dxva is an api and a corresponding ddi for using hardware acceleration to speed up video processing. Check decoder device and processor device supported by gpu. Dxva2 is the second iteration of directx video acceleration dxva. Software codecs and software video processors can use dxva to offload certain cpuintensive operations to the gpu.