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Encyclopedia > Open source codecs and containers

This is a listing of open source multimedia codecs and containers. Open source refers to projects that are open to the public and which draw on other projects that are freely available to the general public. ... A Codec is a device or program capable of performing Encoding and Decoding on a digital data stream or signal. ... A container format is a computer file format that can contain various types of data, compressed in a manner of standardized codecs. ...

Contents


Containers

A container format is a computer file format that can contain various types of data, compressed in a manner of standardized codecs. ... For help with sound or video, see Wikipedia:Media help. ... The Xiph. ... OGM meaning Ogg Media File, was developed by Tobias Waldvogel. ... Matroska (common file extensions being . ... NUT is a patent-free, multimedia container format started by the MPlayer and FFmpeg developers. ... MPlayer is a free media player with support for more multimedia formats than any other media player. ...

Video Codecs

  • x264 - H.264 (MPEG-4 part 10) implementation.
  • XviD - MPEG-4 part 2 codec, compatible with DivX.
  • FFmpeg codecs - codecs in the libavcodec library from the FFmpeg project (FFV1, Snow, MPEG-1, MPEG-2, MPEG-4 part 2, MSMPEG-4, H.264, WMV2, SVQ3, MJPEG, HuffYUV, Indeo and others)
  • Theora - Based on VP3, part of the Ogg Project.
  • Dirac - Wavelet based codec created by the BBC.
  • Huffyuv - Lossless codec from BenRG.

A video codec is a device or software module that enables the use of data compression for digital video. ... x264 is a free library for encoding H.264/MPEG-4 AVC video streams. ... H.264 is a high compression digital video codec standard written by the ITU-T Video Coding Experts Group (VCEG) together with the ISO/IEC Moving Picture Experts Group (MPEG) as the product of a collective partnership effort known as the Joint Video Team (JVT). ... XviD is an open-source MPEG-4 video codec originally based on OpenDivX. XviD was started by a group of volunteer programmers after the OpenDivX source was closed in July 2001. ... MPEG-4, introduced in late 1998, is the designation for a group of audio and video coding standards and related technology agreed upon by the ISO/IEC Moving Picture Experts Group (MPEG). ... This article is about the video codec DivX. For the pay-per-view DVD system, see DIVX. DivX® is a video codec created by DivX, Inc. ... FFmpeg is a set of free computer programs that can record, convert and stream digital audio and video. ... Theora is a video codec being developed by the Xiph. ... VP3 was originally a proprietary video codec developed by On2 Technologies. ... Dirac is a prototype algorithm for the encoding and decoding (see codec) of raw video. ... In mathematics, wavelets, wavelet analysis, and the wavelet transform refers to the representation of a signal in terms of a finite length or fast decaying oscillating waveform (known as the mother wavelet). ... The British Broadcasting Corporation (BBC) is the largest publicly-funded radio and television broadcasting corporation of the United Kingdom (see British television) and the world. ... Huffyuv (or HuffYUV) is a very fast, lossless Win32 video codec written by Ben Rudiak-Gould, meant to replace uncompressed YUV as a video capture format. ... Lossless data compression is a class of data compression algorithms that allow the original data to be reconstructed exactly from the compressed data. ...

Audio Codecs

  • FLAC - Lossless compression.
  • iLBC - Low bitrate voice compression.
  • Musepack - Lossy, high quality compression; an attempt to replicate the MP3 format.
  • Speex - Low bitrate compression, primarily voice.
  • Vorbis - Lossy, high quality compression; part of ogg project.

An audio codec is a computer program that compresses/decompresses digital audio data according to a given audio file format or streaming audio format. ... The Free Lossless Audio Codec (FLAC) logo. ... The Internet Low Bit Rate Codec (iLBC) is a royalty free narrowband speech codec, developed by Global IP Sound (GIPS). ... Musepack or MPC is an open source lossy audio codec, specifically optimized for transparent compression of stereo audio at bitrates of 160-180 kbit/s. ... Speex is a free software speech codec that claims to be unencumbered by patent restrictions. ... Vorbis is an open and free lossy audio compression (codec) project headed by the Xiph. ...

Text Codecs

(generally used for subtitles/closed captioning)

Ogg Writ is a text-phrase codec used with the Ogg encapsulation format. ...

See also


  Results from FactBites:
 
Editorial:Codecs - Anime-Wiki.org (4939 words)
In the MS Windows sense, a codec is just a simple library that plugs into the operating system so that DirectShow and other simple WAPI-based media players have a way to decode and play back a number of varied formats for audio and video without the expentidure of writing decoders for these formats from scratch.
A Free, open source audio codec developed by the Xiph.org foundation, Vorbis has come out to the top to be one of the top codecs for low-bitrate applications (for 64Kib/sec and up) in quality, and, in many cases, speed.
Codecs that are today free could suddenly disappear or become too expensive for anyone not in a major video processing company to afford - barring entry to the market to startup companies and keeping the common man from making and releasing his own video.
  More results at FactBites »


 

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