It makes no difference whether you install lav yourself, use the one coming with mpchc or the one from a codec pack. I managed to get the nvidia970 hardware acceleration working and can play most. What is the difference between a renderer and a decoder, when i asked on the shark007 forums about which is better lav or madvr, he told me madvr is a. In combination with the dts decoder from tmt, lav audio is capable of full high quality dtshd decoding. Intel promised to work with any 8bit hevc content on hd4600.
This set of functionality is termed the accelerator. Lav cuvid decoder high quality hardware decoding for nvidia new. Dxva2 and cuvid are the two decoders i am going to test out on this page. It is based on ffmpeg and libbluray and is aimed to offer an allaround solution to perfect playback of filebased media as well as blurays. Best way to make media player classic use hardware. Lav filters directshow media splitter and decoders. Im evaluating zoom player as the best way to view hevc videos on my pc, and think i found the correct configuration to get the best performance from my combination intelsandybridge nvidia970 working.
Video compression codecs are designed to all decode the same result. Lav splitter is a multiformat media splitter for directshow. In dxva, some decoding operations are implemented by the graphics hardware driver. Im already able to read the frame if i ask the device to send the frame in a non compressed format and i used draw flattened pixmap. If hardware decoding is possible, use hardware decoding and leave software decoding for anything that the hardware decoder doesnt support.
Lav video decoder hevc performance 64 vs 32 bit zoom. Only missing is mpeg4asp decoding through cuvid, but i dont believe the extra effort is really worth it. In this case each frame is about 300k instead if i ask to the device to send the frame in jpeg format the size is about 12k for a size fo 352x288. But the lav video decoder installation default for hardware acceleration is none, so inexperienced users are stuck with software decoding from the start unless they investigate and change the setting. The best options for mpeg2 are the lav video decoder, or the microsoft dtvdvd video decoder. Lav splitter is a souce filtersplitter required to demux the files into their separate elementary streams. At a minimum, meet the specifications uhd bd8bit because the restrictions for bandwith are not listed in the table for 15. Furthermore, you can select the decoding method between using software decoding, lav video dxva2 native, and lav video dxva2 copyback. Video corruption when using dxva2 on intel gpus when decoding certain vc1 or mpeg2 clips. Decoding and rendering benchmarks intels haswell an. It supports any video format supported by nvidia hardware, including h264, vc1, mpeg2 and mpeg4asp divxxvid. Enable dxva as decoder option in the setup rather than software decoding. Live attenuated vaccine, a vaccine with weakened but still living pathogen. Best way to make media player classic use hardware acceleration.
The goal is to figure out what video decoder offers the best video quality. Popular alternatives to lavfilters for windows, linux, mac, android, software as a service saas and more. Ive followed the wiki and set ffdshow raw video filter to use svp in mpc be but when i look into info it says it uses software decoding. I dont have to read a file but a stream of byte coming from a digital recording device through ethernet. Lav filters is a multiformat media splitter decoder that uses libavformat to play all sorts of media files. Fix an issue with ass tracks on segmented mkv files. With lav audio, decoding dtshd is as simple as decoding any other audio format. Lav filters formerly lavfsplitter is a collection of directshow media splitters and audio video decoders that allow you to play a wide range of media formats. Unfortunately this microsoft decoder is only availble in some versions of windows. The lav filters package contains an audio decoder, a video decoder and.
Be assured that we are here to help you with your concern. Create your free github account today to subscribe to this repository for new releases and build software alongside 40 million developers. The decoder could crash if dxva2 decoding failed and the software decoder is unavailable. The vision of the mediaportal project is to create a free open source media centre application, which supports all advanced media centre functions, and is accessible to all windows users. All things considered, lav filters is a great addition to your system, as it ensures excellent media playback and it uses a low amount of your system resources. Note that lav cuvid will basically be discontinued now, all its functionality is available through lav video. Decoding software free download decoding top 4 download offers free software downloads for windows, mac, ios and android computers and mobile devices. Lav audio is a multiformat audio decoder for directshow. If one decoder gave a different output than another, that would mean something was implemented incorrectly. This means that no shortcuts have been used, no corners cut, everything is setup for the best quality possible. Version history and archived downloads page for lav cuvid decoder. You can also change this by going to lav video and then change. Vp9 video could produce wrong timestamps, resulting in a black screen or other playback disruptions.
Dtshd hra bitstreaming did not work properly with many av receivers fixed. Switch to dxva2 copyback or pure software decoding if. 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. I have updated amd crimson drivers to the latest version available but still the dxva2both native and copyback options of the lav video decoder doesnt show my amd radeon hd8750m card.
Software decoding is where you write and compile an application, meant to be run on a standard cpu, that will then decode the video. Switch to dxva2 copyback or pure software decoding if you want to avoid that risk. These products either dont support hevc hardware decoding, have too low power socs to support smooth software playback, or only support a. What software pack need for gpu hevc 8bit decode on. Reduced binary bloat caused by the ycbcr rgb converter, reducing binary size to nearly half. Users struggling with x86 software decoding of hevc content with lav video may want to substitute the strongene lentoid hevch. Most common commercial used x86 32 bit decoder in consumer x86 32 bit playback software currently have 0 chance cyberlink 32 bit hybrid nvidia hardware decoding geforce gtx 970 lav filter x86 software decoding basically the same mt under utilization result of cyberlinks x86 as well as x64 code path lav filter x64 nv12 forced 10 bit8bit decoding. Lav audio will fallback to audio decoding if bitstreaming is not supported by the audio rendererhardware fixed. Other decoding operations are implemented by usermode application software, called the host decoder or software decoder. To work around this issue, lav video decoder offers three options.
The lav cuvid decoder is a video decoder for nvidia graphics cards. Lav cuvid decoder is a video decoder that utilizes the nvidia hardware decoder engine through the. Lav audio and video decoder are powerful decoders with a focus on quality and. Explore 9 apps like lavfilters, all suggested and ranked by the alternativeto user community. I guess the last option to fix it is to replace the hardware decoding to a gpu software decoding without using the video decoder chipset for h264 ie. A detailed list of all changes to lav filters, including those from development builds, can be found in the source code commit log of lav filters and its custom ffmpeg it is easy to interpret the version of a development build. The lav video component supports multithreading, hardware and software deinterlacing and come with hardware acceleration options, while the audio decoder supports bitstreaming through hdmi and spdif to the receiver and features audio delaying options and automatic audiovideo synchronization. Dxva2 not supported in lav video decoder community.
Lav filters provides you with a comprehensive package comprising a multiformat media splitter, an audio decoder and a video decoding tool. It means there is a small chip on the motherboard specifically dedicated to decoding h264 video. This is the most efficient way to go in terms of processor resources and electrical consumption. Bitstreaming spdif,hdmi bitstreaming allows the audio to be sent untouched to an amplifier or receiver for decoding which means that only one cable is needed spdif or hdmi for. Whether the number of lav decoding threads is set to auto or 4 or 8 or 12 on the various machine i can access, it only uses one thread. I have mpchc setup correctly with lav audio to decode in software disabled the bitstreaming options. Anyway, at the time i had ugly video decoding using lav dxva2native, i didnt have any problem with lav cuvid, the one that gets ugly is only the dxva, but now both of them are okay.
Lav cuvid decoder high quality hardware decoding for nvidia. The lav video decoder supports several hardware decoders. Mpchc offers a few different options for video decoders. It supports all formats that the nvidia hardware can decode, which includes h264, vc1, mpeg2 and mpeg4asp divxxvid. After clicking on the screwdriver icon next to the lav video decoder, youll be. The newest lav filters has hardware hevc decoding support. Suggested hardware with consideration of software decoding and usage of. What is the difference between hardware decoding and. Dxva2 and cuvid are the two decoders i am going to test out on. Lav filters, a set of opensource directshow filters based on ffmpeg. After several days of tinkering i saw that it mpc only uses one thread to decode h264 in software mode.
Lav cuvid decoder is a video decoder that utilizes the nvidia hardware decoder engine through the cuda video decoding api cuvid. Lav cuvidfiltersplitterhd audiohigh quality hardware. What is the difference between hardware decoding and software. It seems that the vast majority of desktops and laptops nowadays have some form of dxva2 hardware acceleration. Dtshd is the most common audio format to be found on blurays, and before lav audio, it was quite a chore to get full decoding of this format not anymore. This would require the use of an extra external filter or media rules and filters configuration. Below are the changelogs for the most recent stable builds of lav filters. For users of dvbt2 in germany, or other regions with hevc broadcasts, the lav video decoder is probably your best option, and can be downloaded from here. Hevc is new, and very rarely used in broadcast television at this stage, can be left disabled for most users. Directshow decoder audio software free download directshow decoder audio top 4 download offers free software downloads for windows, mac, ios and android computers and mobile devices. It is based on ffmpeg and its main goal is to offer audio quality without compromise. From the issue description, i understand that you want to know how you got ffdshow audio decoder and lav splitter installed in your pc. At its core is the ffmpeg program itself, designed for commandlinebased processing of video and audio files, and widely used for format transcoding, basic editing trimming and concatenation, video scaling, video post.
The spikes for software decoding that are larger in amplitude compared to that from the receiver make sense as those are very low frequency bass noises and my eqapo filters currently. Decoding software free download decoding top 4 download. Lav filters is the only combo for splitter, audio and video decoding that i can advice. Ffmpeg is a free and opensource project consisting of a vast software suite of libraries and programs for handling video, audio, and other multimedia files and streams. Lately, lav filters provides support for vp7 videos and it has implemented a wmv9 mft decoder that replaces the old dmo decoder for vc1wmv3 on windows 7 and above. Decoding speed improved greatly by multithreading technology and adaptive singleinstructionmultipledata simd optimized algorithms. In reaching this goal we are working every day to make. Its stable, reliable, focused on quality, on active development by a great developer. Mkvwebm, avi, mp4mov, mpegts, flv, ogg are tested and will be registered for.
According to lav filters author, cuvid and intel quicksync are outdated, dxva copyback direct mode beats them both in performance. How to uninstall ffdshow audio decoder and lav splitter. In configuration codecs and renderer, click on the screwdriver icon next to the lav audio decoder to display the following settings screen. Is there any way of using mpc be with dxva decoding and gpu accelerated svp. The arcsoft decoder, included with various hauppauge applications is also a good alternative. Mpchc video decoder comparison mpchc video decoders. The terms host decoder and software decoder are equivalent.