Xvid
Initial release | 2001 | (as XviD)
---|---|
Stable release | 1.3.7 (December 28, 2019[±] | )
Preview release | SVN [±] |
Cross-platform | |
Size | 11 MB |
Standard(s) | MPEG-4 ASP |
Type | Video codec |
License | GNU General Public License, version 2 (SPDX identifier: GPL-2.0-or-later) |
Website | www |
Xvid (formerly "XviD") is a
Xvid is a primary competitor of the
History
In January 2001,
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
Patent issues
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.
Sigma Designs controversy
In July 2002,
Playing Xvid encoded files
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.
Xvid encoded files can be written to a
For example, Xvid specifies three warp points for its implementation of global motion compensation as opposed to the single warp point implementation of DivX. Enabling some of the more advanced encoding features can compromise player compatibility. Some issues exist with the custom quantization matrices used in tools such as
Encoding applications
Operating systems | Software | Comment |
---|---|---|
Windows | VirtualDub, DVDx, xvid encraw, AutoGK, MeGUI etc. | And all other applications that support encoding through the VfW framework. |
Windows
|
), etc. | These platform and framework independent applications access the Xvid library directly. |
See also
References
- ^ "Questions and Answers". Retrieved November 4, 2016.
Xvid is Free Software and published under the GNU GPL license.
- ^ "DivX Software". DivX. Retrieved November 4, 2016.
- ^ Sibaud, Benedict, ed. (June 11, 2004). "Interview de l'équipe XviD et sortie de la version 1.0.1" [Interview of the XviD team and release of version 1.0.1]. linuxfr.org (in French). Archived from the original on November 5, 2016. Retrieved November 5, 2016.
In March 2001, a rewritten encoder library was committed to the CVS (by a DivXNetworks staff). The rewritten library was removed shortly after, with DivXNetworks citing that "We (our bosses) decided that we are not ready to have it in public yet."
- ^ Lai, Hongli (August 17, 2001). "[vorbis] Vorbis ACM codec". Archived from the original on April 28, 2016. Retrieved November 4, 2016.
- ^ "MPEG-4 Visual Patent Portfolio License" (PDF). July 1, 2008. Archived from the original (PDF) on November 20, 2008. Retrieved November 5, 2016.
- ^ "Commit - rpms/xvidcore - c2e9c5f2f1892766720b6f2eda245112c17049bb - src.fedoraproject.org". src.fedoraproject.org. Retrieved 13 August 2023.
- ^ michael (August 22, 2002). "Sigma Designs Accused of Copyright Infringement". Slashdot. Archived from the original on June 10, 2016.
- ^ Magee, Mike (August 22, 2002). "XVID asks Sigma to stop copyright breach". The Inquirer. Archived from the original on March 5, 2016. Retrieved November 5, 2016.
{{cite web}}
: CS1 maint: unfit URL (link) - ^ Lowe, Ken; Porter, Stephanie (August 22, 2002). "SIGMA MAKES SOURCE CODE AVAILABLE FOR ITS MPEG-4 VIDEO CODEC" (PDF). Sigma Designs. California, United States. Archived from the original (PDF) on March 14, 2006. Retrieved November 5, 2016.
- ^ "Download". Xvid. Retrieved November 3, 2016.
- ^ Barranco, Iñigo Lopez (November 25, 2004). "[vlc] Can VLC play MPEG2-ES a live.com RTP streaming?". Archived from the original on March 5, 2016. Retrieved November 5, 2016.