No, Shotcut uses very little of the multimedia subsystem on your Operating System and supplies its own using FFmpeg and MLT and other projects.

xvid is just a very slightly better implementation of MPEG-4 part 2 than FFmpeg, but it is not so relevant anymore since x264 (H.264) and beyond.

Xvid (formerly "XviD") is a video codec library following the MPEG-4 video coding standard, specifically MPEG-4 Part 2 Advanced Simple Profile (ASP). It uses ASP features such as b-frames, global and quarter pixel motion compensation, lumi masking, trellis quantization, and H.263, MPEG and custom quantization matrices.

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Xvid is a primary competitor of the DivX Pro Codec. In contrast with the DivX codec, which is proprietary software developed by DivX, Inc., Xvid is free software distributed under the terms of the GNU General Public License.[1] This also means that unlike the DivX codec, which is only available for a limited number of platforms,[2] Xvid can be used on all platforms and operating systems for which the source code can be compiled.

In January 2001, DivXNetworks founded OpenDivX as part of Project Mayo which was intended to be a home for open source multimedia projects. OpenDivX was an open-source MPEG-4 video codec based on a stripped-down version of the MoMuSys reference MPEG-4 encoder. The source code, however, was placed under a restrictive license and only members of the DivX Advanced Research Centre (DARC) had write access to the project's CVS. In early 2001, DARC member Sparky wrote an improved version of the encoding core called encore2. This was updated several times before, in April, it was removed from CVS without warning. The explanation given by Sparky was "We (our bosses) decided that we are not ready to have it in public yet."[3]

In July 2001, developers started complaining about a lack of activity in the project; the last CVS commit was several months old, bugfixes were being ignored, and promised documentation had not been written. Soon after, DARC released a beta version of their closed-source commercial DivX 4 codec, which was based on encore2, saying that "what the community really wants is a Winamp, not a Linux."[4] It was after this that a fork of OpenDivX was created, using the latest version of encore2 that was downloaded before it was removed. Since then, all the OpenDivX code has been replaced and Xvid has been published under the GNU General Public License.

As an implementation of MPEG-4 Part 2, Xvid uses many patented technologies.[5] For this reason, Xvid 0.9.x versions were not licensed in countries where these software patents are recognized. With the 1.0.x releases, a GNU GPL v2 license is used with no explicit geographical restriction. However, the legal usage of Xvid may still be restricted by local laws.[citation needed] Fortunately, the Fedora Project, a community backed by Red Hat, has imported xvidcore to its repositories on January 24, 2023.[6] The last US patents expired in November 2023. The only patents left worldwide are in Brazil.

In July 2002, Sigma Designs released an MPEG-4 video codec called the REALmagic MPEG-4 Video Codec. Before long, people testing this new codec found that it contained considerable portions of Xvid code. Sigma Designs was contacted and confirmed that a programmer had based REALmagic on Xvid, but assured that all GPL code would be replaced to avoid copyright infringement. When Sigma Designs released the supposedly rewritten REALmagic codec, the Xvid developers immediately disassembled it and concluded that it still contained Xvid code, only rearranged in an attempt to disguise its presence. The Xvid developers decided to stop work and go public to force Sigma Designs to respect the terms of the GPL. After articles were published in Slashdot[7] and The Inquirer,[8] in August 2002 Sigma Designs agreed to publish their source code.[9]

Xvid is not a video format; it is a program for compressing to and decompressing from (hence the name codec) the MPEG-4 ASP format. Since Xvid uses MPEG-4 Advanced Simple Profile (ASP) compression, video encoded with Xvid is MPEG-4 ASP video (not "Xvid video"), and can therefore theoretically be decoded with all ASP-compliant decoders. This includes a large number of media players and decoders based on libavcodec (such as MPlayer, VLC, ffdshow or Perian). As of 2016[update], xvid.com carries binaries for using the codec.[10] However, early versions of the codec had a bug that prevented XviD-encoded files from being decoded with DivX, even when they were encoded using the DivX fourcc.

With the high-quality compression ratio supported in XviD Codec, a large-sized movie file can be easily compressed to retain DVD quality while fitting on a CD-ROM. Though you may be using a file with .XVID extension, numerous file containers can store XviD content. Depending on the creator, the video file might have different names, such as xyz.xvid.avi.

XviD Media Codec includes the open-source MPEG4 codec, which comes from the same open-source project that was the basis for DivX 4.x/5.x. The XviD codec will enable you to watch XviD movies. There's no XviD Player included, but with this codec installed on your machine, you can view XviD Movies with a media player, such as WMP or WinAmp.

In trying to install Xvid codec for VLC on my Ubuntu 16.04, I somehow ended up messing my package system, such that I cannot even install software upgrades - neither through the Software Updater, nor through apt-get upgrade

If you have trouble playing a certain video you have on your PC, or you're just looking to save some disk space by compressing old movies, XviD Video Codec should be able to accomplish those tasks for you. And if you're into tweaking your codecs' performance, this open-source software will not let you down.

XviD is an open source MPEG-4 video codec designed for everyone. Its purpose is to compress video in order to allow for faster transmission over computer networks or for more efficient storage on computer disks. Hence, XviD can somewhat be seen as a ZIP archive for video. XviD removes information from video that is not important for human perception in order to achieve very high compression rates while still keeping very good visual quality. XviD is published under the GNU GPL license. That means it can be obtained free of charge. And since XviD is open-source software, everyone can review the XviD source code to check for himself that nothing malicious is included.

qpel Raise the number of candidate motion vectors by increasing the precision of the motion estimation from halfpel to quarterpel. The idea is to find better motion vectors which will in return reduce bitrate (hence increasing quality). However, motion vectors with quarterpel precision require a few extra bits to code, but the candidate vectors do not always give (much) better results. Quite often, the codec still spends bits on the extra precision, but little or no extra quality is gained in return. Unfortunately, there is no way to foresee the possible gains of qpel, so you need to actually encode with and without it to know for sure.

I recommend you download the freeware K-Lite Codec pack. It comes with a plenthora of codecs all in one easy to use package. Includes:Divx, Xvid,WMV,3viX and they even have alternatives to Quicktime and Real. Klite

The native encoder has the advantage of not requiring an external library. Both encoders should provide a similar output, but for lower bitrates/quality (e.g. 1000 kBit/s for 720p content), libxvid will deliver better quality than mpeg4.

The default FourCC stored in an MPEG-4-coded file will be FMP4. If you want a different FourCC, use the -vtag option. E.g., -vtag xvid will force the FourCC xvid to be stored as the video FourCC rather than the default.

Note: This guide uses the AVI container files for the examples, as the most common usage of XviD video is currently for older hardware devices. See the H.264 and AAC encoding guides if you are using modern devices. These codecs will offer better compression efficiency; using modern containers like MP4 or MKV is also recommended.

I am saving frames from live stream to a video with h264 codec. I tried this with openCV (versions 3.4 and 4.4) in python but I am not able to save it. I can save video in XVID and many other codecs but I am not successful in h264 and h265. 0852c4b9a8

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