266 relations: A-law algorithm, AAC-LD, Adaptive Multi-Rate audio codec, Adaptive Multi-Rate Wideband, Adaptive Transform Acoustic Coding, Advanced Audio Coding, ADX (file format), Algebraic code-excited linear prediction, Android (operating system), Android Oreo, Apple Intermediate Codec, Apple Lossless, Apple ProRes, AptX, Asao (codec), Association of Public-Safety Communications Officials-International, Association of Radio Industries and Businesses, Au file format, Audio Interchange File Format, Audio Lossless Coding, Audio Video Standard, Autodesk Animator, AV1, AVC-Intra, Avid DNxHD, BBC, BiM, Bink Video, Blu-ray, Bluetooth Special Interest Group, Canopus Corporation, CELT, CineForm, CinemaDNG, Cinepak, Code-excited linear prediction, Codec, Codec 2, Compact Disc Digital Audio, Companding, Comparison of audio coding formats, Comparison of video codecs, Comparison of video container formats, Comparison of video player software, Continuous Media Markup Language, Continuously variable slope delta modulation, CoreAVC, CRI Middleware, CSR (company), D-STAR, ..., DARPA, Dialogic ADPCM, Digital AMPS, Digital container format, Digital Speech Standard, Digital Video Interactive, Dirac (video compression format), Direct Stream Digital, DirectPlay, DivX, Dolby Digital, Dolby E, Dolby TrueHD, DOSBox, DTS (sound system), DTS-HD Master Audio, DV, DVD-Audio, East Japan Railway Company, Elecard, Enhanced full rate, Enhanced Variable Rate Codec, Enhanced Variable Rate Codec B, Enhanced Voice Services, ETSI, Extended Adaptive Multi-Rate – Wideband, FAAC, FFmpeg, FFV1, FLAC, Flash Video, FMOD, France, Fraunhofer FDK AAC, FS-1015, FS-1016, Full Rate, FXpansion, G.711, G.718, G.719, G.722, G.722.1, G.723, G.723.1, G.726, G.728, G.729, G.729.1, GameCube, Global IP Solutions, GNU General Public License, GNU Lesser General Public License, Google, GoPro, Grass Valley (company), GSM, Guobiao standards, H.261, H.262/MPEG-2 Part 2, H.263, H.264/MPEG-4 AVC, Half Rate, Harmonic and Individual Lines and Noise, Harmonic Vector Excitation Coding, HD Radio, HDX4, High Efficiency Video Coding, High-Definition Coding, High-Efficiency Advanced Audio Coding, Huffyuv, Indeo, Inmarsat, International Telecommunication Union, Internet Draft, Internet Low Bitrate Codec, Internet Speech Audio Codec, InterVideo, ITunes, Japan International Cooperation Agency, Kadokawa Dwango, Lagarith, LAME, LDAC (codec), Libavcodec, Library of Congress, Libvpx, List of open-source codecs, Lossless JPEG, Lossless predictive audio compression, Lossless Transform Audio Compression, MainConcept, Meridian Lossless Packing, Microsoft Windows, MIL-STD-188, MiniDisc, Mixed-excitation linear prediction, Monkey's Audio, Montpellier, Moscow State University, Motion JPEG, Motion JPEG 2000, MP3, Mp3HD, MPEG-1, MPEG-1 Audio Layer I, MPEG-1 Audio Layer II, MPEG-2, MPEG-4, MPEG-4 Part 17, MPEG-4 Part 2, MPEG-4 Part 3, MPEG-4 SLS, MSU Lossless Video Codec, Multi-Band Excitation, Multiview Video Coding, Musepack, Nero AAC Codec, Nero Digital, NewTek, Nintendo, Nintendo 3DS, Nintendo European Research & Development, OMS Video, On2 Technologies, OpenH264, OptimFROG, Opus (audio format), Original Sound Quality, PDC-EFR, PDC-HR, Perceptual audio coder, Personal Digital Cellular, PictureTel Corp., Pixlet, PlayStation 4, PlayStation Vita, Polycom, Portable Network Graphics, ProCoder, Project 25, Pulse-amplitude modulation, Pulse-code modulation, Pulse-density modulation, QDesign, Qualcomm code-excited linear prediction, QuickTime, QuickTime Animation, Raw audio format, RealAudio, RealVideo, Red Digital Cinema, Relaxed code-excited linear prediction, RTAudio, RTP audio video profile, SBC (codec), Scalable Video Coding, ScummVM, Selectable Mode Vocoder, SheerVideo, Shorten (file format), SILK, Siren (codec), Skype, Skype for Business Server, Smacker video, Society of Cable Telecommunications Engineers, Sorenson Media, SoX, Speex, Spirit DSP, Super Audio CD, SVOPC, TechSmith, Telecommunications Industry Association, TETRAPOL, Texas Instruments, Theora, TMPGEnc, TooLAME, Tremor (software), Truespeech, TTA (codec), Ttyrec, TwinVQ, United States Department of Defense, United States Military Standard, Ut Video Codec Suite, Variable-Rate Multimode Wideband, VC-1, Vector sum excited linear prediction, Virtual Network Computing, VisualOn, VMware Workstation, Vorbis, VP3, VP6, VP8, VP9, WAV, WaveLab, WavPack, Wii, Windows Media Audio, Windows Media Encoder, Windows Media Video, X264, X265, XAVC, Xbox 360, Xiph.Org Foundation, Xvid, YULS, 3GPP, 3ivx, 3rd Generation Partnership Project 2. Expand index (216 more) » « Shrink index
An A-law algorithm is a standard companding algorithm, used in European 8-bit PCM digital communications systems to optimize, i.e. modify, the dynamic range of an analog signal for digitizing.
The MPEG-4 Low Delay Audio Coder (a.k.a. AAC Low Delay, or AAC-LD) is audio compression standard designed to combine the advantages of perceptual audio coding with the low delay necessary for two-way communication.
The Adaptive Multi-Rate (AMR or AMR-NB or GSM-AMR) audio codec is an audio compression format optimized for speech coding.
Adaptive Multi-Rate Wideband (AMR-WB) is a patented wideband speech audio coding standard developed based on Adaptive Multi-Rate encoding, using similar methodology as algebraic code excited linear prediction (ACELP).
Adaptive Transform Acoustic Coding (ATRAC) is a family of proprietary audio compression algorithms developed by Sony.
Advanced Audio Coding (AAC) is a proprietary audio coding standard for lossy digital audio compression.
ADX is a lossy proprietary audio storage and compression format developed by CRI Middleware specifically for use in video games; it is derived from ADPCM.
Algebraic code-excited linear prediction (ACELP) is a patented speech coding algorithm by VoiceAge Corporation in which a limited set of pulses is distributed as excitation to a linear prediction filter.
Android is a mobile operating system developed by Google, based on a modified version of the Linux kernel and other open source software and designed primarily for touchscreen mobile devices such as smartphones and tablets.
Android "Oreo" (codenamed Android O during development) is the eighth major update and the 15th version of the Android operating system.
The Apple Intermediate Codec is a high-quality 8-bit 4:2:0 video codec used mainly as a less processor-intensive way of working with long-GOP MPEG-2 footage such as HDV.
Apple Lossless, also known as Apple Lossless Audio Codec (ALAC), or Apple Lossless Encoder (ALE), is an audio coding format, and its reference audio codec implementation, developed by Apple Inc. for lossless data compression of digital music.
Apple ProRes is a lossy video compression format developed by Apple Inc. for use in post-production that supports up to 8K.
In digital audio data reduction technology, aptX (formerly apt-X) is a family of proprietary audio codec compression algorithms currently owned by Qualcomm.
Asao (also known as Nellymoser audio codec) is a proprietary single-channel (mono) codec and compression format optimized for low-bitrate transmission of audio, developed by Nellymoser Inc.
Association of Public-Safety Communications Officials-International (APCO) was founded in 1935.
The, commonly known as, is a standardization organization in Japan.
The Au file format is a simple audio file format introduced by Sun Microsystems.
Audio Interchange File Format (AIFF) is an audio file format standard used for storing sound data for personal computers and other electronic audio devices.
MPEG-4 Audio Lossless Coding, also known as MPEG-4 ALS, is an extension to the MPEG-4 Part 3 audio standard to allow lossless audio compression.
Audio Video Coding Standard (AVS) refers to the digital audio and digital video series compression standard formulated by Audio and Video coding standard workgroup of China according to the open international rules.
Autodesk Animator, also known as Ani Pro, PJ Paint, PJ, was a 2D computer animation and painting program in 1989 for PC with MS-DOS.
AOMedia Video 1 (AV1), is an open, royalty-free video coding format designed for video transmissions over the Internet.
AVC-Intra is a type of video coding developed by Panasonic, and then supported in products made by other companies.
Avid DNxHD ("Digital Nonlinear Extensible High Definition") is a lossy high-definition video post-production codec developed by Avid for multi-generation compositing with reduced storage and bandwidth requirements.
The British Broadcasting Corporation (BBC) is a British public service broadcaster.
BiM (Binary MPEG format for XML) is an international standard defining a generic binary format for encoding XML documents.
Bink Video is a proprietary video file format (extension.bik) developed by RAD Game Tools, and primarily used for full-motion video sequences in video games.
Blu-ray or Blu-ray Disc (BD) is a digital optical disc data storage format.
The Bluetooth Special Interest Group (Bluetooth SIG) is the standards organisation that oversees the development of Bluetooth standards and the licensing of the Bluetooth technologies and trademarks to manufacturers.
Canopus Co., Ltd. was a manufacturer of video editing cards and video editing software.
Constrained Energy Lapped Transform (CELT) is an open, royalty-free lossy audio compression format and a free software codec with especially low algorithmic delay for use in low-latency audio communication.
CineForm Intermediate is an open source (from October 2017) video codec developed for CineForm Inc by David Taylor, David Newman and Brian Schunck.
CinemaDNG is the result of an Adobe-led initiative to define an industry-wide open file format for digital cinema files.
Cinepak is a lossy video codec developed by Peter Barrett at SuperMac Technologies, and released in 1991 with the Video Spigot, and then in 1992 as part of Apple Computer's QuickTime video suite.
Code-excited linear prediction (CELP) is a speech coding algorithm originally proposed by M. R. Schroeder and B. S. Atal in 1985.
A codec is a device or computer program for encoding or decoding a digital data stream or signal.
Codec 2 is a low-bitrate speech audio codec (speech coding) that is patent free and open source.
Compact Disc Digital Audio (CDDA or CD-DA) is the standard format for audio compact discs.
In telecommunication and signal processing companding (occasionally called compansion) is a method of mitigating the detrimental effects of a channel with limited dynamic range.
The following tables compare general and technical information for a variety of audio coding formats.
Α video codec is software or a device that provides encoding and decoding for digital video, and which may or may not include the use of video compression and/or decompression.
This table compares features of container formats (video file formats).
The following comparison of video players compares general and technical information for notable software media player programs.
Continuous Media Markup Language (CMML) is to audio or video what HTML is to text.
Continuously variable slope delta modulation (CVSD or CVSDM) is a voice coding method.
CoreAVC was a proprietary codec for decoding the H.264/MPEG-4 AVC (Advanced Video Coding) video format.
(formerly CSK Research Institute Corp.) is a Japanese developer providing middleware for use in the computer and video game industry.
CSR plc (formerly Cambridge Silicon Radio) was a multinational fabless semiconductor company headquartered in Cambridge, United Kingdom.
D-STAR (Digital Smart Technologies for Amateur Radio) is a digital voice and data protocol specification for amateur radio.
The Defense Advanced Research Projects Agency (DARPA) is an agency of the United States Department of Defense responsible for the development of emerging technologies for use by the military.
Dialogic ADPCM or VOX is an audio file format, optimized for storing digitized voice data at a low sampling rate.
IS-54 and IS-136 are second-generation (2G) mobile phone systems, known as Digital AMPS (D-AMPS), and a further development of the north-American 1G mobile system AMPS.
A container or wrapper format is a metafile format whose specification describes how different elements of data and metadata coexist in a computer file.
Digital Speech Standard (DSS) is a proprietary compressed digital audio file format defined by the International Voice Association, a co-operative venture by Olympus, Philips and Grundig.
Digital Video Interactive (DVI) was the first multimedia desktop video standard for IBM-compatible personal computers.
Dirac is an open and royalty-free video compression format, specification and system developed by BBC Research & Development.
DSD Records (DSD) is a trademark used by Sony and Philips for their system of digitally recreating audible signals for the Super Audio CD (SACD).
DirectPlay is a deprecated API that was part of Microsoft's DirectX API.
DivX is a brand of video codec products developed by DivX, LLC.
Dolby Digital is the name for audio compression technologies developed by Dolby Laboratories.
Dolby E is an audio encoding and decoding technology developed by Dolby Laboratories that allows 6 to 8 channels of audio to be compressed into an AES-EBU digital audio stream that can be stored as a standard stereo pair of digital audio tracks.
Dolby TrueHD is a lossless multi-channel audio codec developed by Dolby Laboratories which is used in home-entertainment equipment such as Blu-ray Disc players and A/V receivers.
DOSBOX (stylized as DOSBox) is an emulator program which emulates an IBM PC compatible computer running a DOS operating system.
DTS (Dedicated To Sound) is a series of multichannel audio technologies owned by Xperi Corporation (formerly known as Digital Theater Systems, Inc.), an American company specializing in digital surround sound formats used for both commercial/theatrical and consumer grade applications.
DTS-HD Master Audio (DTS-HD MA) is a combined lossless/lossy audio codec created by DTS (formerly Digital Theater Systems), commonly used for surround-sound movie soundtracks on Blu-ray Disc.
DV is a format for storing digital video.
DVD-Audio (commonly abbreviated as DVD-A) is a digital format for delivering high-fidelity audio content on a DVD.
is a major passenger railway company in Japan and one of the seven Japan Railways Group companies.
Elecard is a technology company that provides software products for video and audio encoding, decoding, processing, receiving and transmission.
Enhanced Full Rate or EFR or GSM-EFR or GSM 06.60 is a speech coding standard that was developed in order to improve the quite poor quality of GSM-Full Rate (FR) codec.
Enhanced Variable Rate CODEC (EVRC) is a speech codec used in CDMA networks.
Enhanced Variable Rate Codec B (EVRC-B) is a speech codec used by CDMA networks.
Enhanced Voice Services (EVS) is a superwideband speech audio coding standard.
The European Telecommunications Standards Institute (ETSI) is an independent, not-for-profit, standardization organization in the telecommunications industry (equipment makers and network operators) in Europe, headquartered in Sophia-Antipolis, France, with worldwide projection.
Extended Adaptive Multi-Rate – Wideband (AMR-WB+) is an audio codec that extends AMR-WB.
FAAC or Freeware Advanced Audio Coder is a software project which includes the AAC encoder FAAC and decoder FAAD2.
FFmpeg is a free software project, the product of which is a vast software suite of libraries and programs for handling video, audio, and other multimedia files and streams.
FFV1, which stands for "FF video codec 1", is a lossless intra-frame video codec.
FLAC (Free Lossless Audio Codec) is an audio coding format for lossless compression of digital audio, and is also the name of the free software project producing the FLAC tools, the reference software package that includes a codec implementation.
Flash Video is a container file format used to deliver digital video content (e.g., TV shows, movies, etc.) over the Internet using Adobe Flash Player version 6 and newer.
FMOD is a proprietary sound effects engine and authoring tool for video games and applications developed by Firelight Technologies, that play and mix sounds of diverse formats on many operating systems.
France, officially the French Republic (République française), is a sovereign state whose territory consists of metropolitan France in Western Europe, as well as several overseas regions and territories.
Fraunhofer FDK AAC (Full title Fraunhofer FDK AAC Codec Library for Android) is an open-source software library for encoding and decoding Advanced Audio Coding (AAC) format audio, developed by Fraunhofer IIS, and included as part of Android.
FS-1015 is a secure telephony speech encoding standard developed by the United States Department of Defense and later by NATO.
FS-1016 is a deprecated secure telephony speech encoding standard developed by the United States Department of Defense.
Full Rate (FR or GSM-FR or GSM 06.10 or sometimes simply GSM) was the first digital speech coding standard used in the GSM digital mobile phone system.
FXpansion is a Ltd company that produces music software including BFD3, Geist2, Strobe2, Tremor, Etch, Bloom, Maul and DCAM Dynamics.
G.711 is an ITU-T standard for audio companding.
G.718 is an ITU-T recommendation embedded scalable speech and audio codec providing high quality narrowband (250 Hz to 3.5 kHz) speech over the lower bit rates and high quality wideband (50 Hz to 7 kHz) speech over the complete range of bit rates.
G.719 is an ITU-T standard audio coding format providing high quality, moderate bit rate (32 to 128 kbit/s) wideband (20 Hz - 20 kHz audio bandwidth, 48 kHz audio sample rate) audio coding at low computational load.
G.722 is an ITU-T standard 7 kHz Wideband audio codec operating at 48, 56 and 64 kbit/s.
G.722.1 is a licensed royalty-free ITU-T standard audio codec providing high quality, moderate bit rate (24 and 32 kbit/s) wideband (50 Hz – 7 kHz audio bandwidth, 16 ksps (kilo-samples per second) audio coding. It is a partial implementation of Siren 7 audio coding format (which offers bit rates 16, 24, 32 kbit/s) developed by PictureTel Corp. (now Polycom, Inc.). Its official name is Low-complexity coding at 24 and 32 kbit/s for hands-free operation in systems with low frame loss. G.722.1 Annex C (or G.722.1C) is a low-complexity extension mode to G.722.1, which doubles the algorithm to permit 14 kHz audio bandwidth using a 32 kHz audio sample rate, at 24, 32, and 48 kbit/s. It is included in the official ITU-T Recommendation G.722.1. The name of this annex is Annex C – 14 kHz mode at 24, 32, and 48 kbit/s. It is an implementation of the mono version of Polycom's Siren 14 audio coding format. G.722.1 is the successor to PT716plus developed by PictureTel Corp. (now Polycom, Inc.), which has been used in videoconferencing systems for many years. As ITU-T Recommendation G.722.1, it was approved on September 30, 1999 after a four-year selection process involving extensive testing. G.722.1/Annex C was approved by ITU-T on May 14, 2005. G.722.1 is a transform-based compressor that is optimized for both speech and music. The G.722.1 algorithm is based on lapped transform technology, using a Modulated Lapped Transform (MLT). The computational complexity is quite low (5.5 floating-point MIPS) for an efficient high-quality compressor, and the algorithmic delay end-to-end is 40 ms. The numbering of the wideband ITU audio codecs is sometimes confusing. There are three principal codecs, which are unrelated, but all carrying the G.722 label. G.722 is the original 7 kHz codec, using ADPCM and operating at 48–64 kbit/s. G.722.1, another 7 kHz codec, operates at half the data rate while delivering comparable or better quality than G.722, but is a transform-based codec. G.722.1 Annex C is very similar to G.722.1, but provides twice the audio bandwidth, 14 kHz. And G.722.2, which operates on wideband speech and delivers very low bitrates, is an ACELP-based algorithm.
G.723 is an ITU-T standard speech codec using extensions of G.721 providing voice quality covering 300 Hz to 3400 Hz using Adaptive Differential Pulse Code Modulation (ADPCM) to 24 and 40 kbit/s for digital circuit multiplication equipment (DCME) applications.
G.723.1 is an audio codec for voice that compresses voice audio in 30 ms frames.
G.726 is an ITU-T ADPCM speech codec standard covering the transmission of voice at rates of 16, 24, 32, and 40 kbit/s.
G.728 is an ITU-T standard for speech coding operating at 16 kbit/s.
G.729 is a royalty-free narrow-band vocoder-based audio data compression algorithm using a frame length of 10 milliseconds.
G.729.1 is an 8-32 kbit/s embedded speech and audio codec providing bitstream interoperability with G.729, G.729 Annex A and G.729 Annex B. Its official name is G.729-based embedded variable bit rate codec: An 8-32 kbit/s scalable wideband coder bitstream interoperable with G.729.
The GameCube is a home video game console released by Nintendo in Japan and North America in 2001 and Europe and Australia in 2002.
Global IP Solutions (also known as GIPS) was a United States-based corporation that developed real-time voice and video processing software for IP networks, before it was acquired by Google in May 2010.
The GNU General Public License (GNU GPL or GPL) is a widely used free software license, which guarantees end users the freedom to run, study, share and modify the software.
The GNU Lesser General Public License (LGPL) is a free software license published by the Free Software Foundation (FSF).
Google LLC is an American multinational technology company that specializes in Internet-related services and products, which include online advertising technologies, search engine, cloud computing, software, and hardware.
GoPro, Inc. (marketed as GoPro and sometimes stylised as GoPRO) is an American technology company founded in 2002 by Nick Woodman.
Grass Valley (formerly known as Thomson Grass Valley and Grass Valley Group) is a Canadian manufacturer of television production and broadcasting equipment, including playout, video cameras, editing and media storage, and character generators.
GSM (Global System for Mobile communications) is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation digital cellular networks used by mobile devices such as tablets, first deployed in Finland in December 1991.
GB standards are the Chinese national standards issued by the Standardization Administration of China (SAC), the Chinese National Committee of the ISO and IEC.
H.261 is an ITU-T video compression standard, first ratified in November 1988.
H.262 or MPEG-2 Part 2 (formally known as ITU-T Recommendation H.262 and ISO/IEC 13818-2, also known as MPEG-2 Video) is a video coding format developed and maintained jointly by ITU-T Video Coding Experts Group (VCEG) and ISO/IEC Moving Picture Experts Group (MPEG).
H.263 is a video compression standard originally designed as a low-bit-rate compressed format for videoconferencing.
H.264 or MPEG-4 Part 10, Advanced Video Coding (MPEG-4 AVC) is a block-oriented motion-compensation-based video compression standard.
Half Rate (HR or GSM-HR or GSM 06.20) is a speech coding system for GSM, developed in the early 1990s.
Harmonic and Individual Lines and Noise (HILN) is a parametric codec for audio.
Harmonic Vector Excitation Coding, abbreviated as HVXC is a speech coding algorithm specified in MPEG-4 Part 3 (MPEG-4 Audio) standard for very low bit rate speech coding.
HD Radio is a trademarked term for iBiquity's in-band on-channel (IBOC) digital radio technology used by AM and FM radio stations to transmit audio and data by using a digital signal embedded "on-frequency" immediately above and below a station's standard analog signal, providing the means to listen to the same program in either HD (digital radio with less noise) or as a standard broadcast (analog radio with standard sound quality).
HDX4 is an MPEG-4 codec developed by a German company named Jomigo Visual Technology.
High Efficiency Video Coding (HEVC), also known as H.265 and MPEG-H Part 2, is a video compression standard, one of several potential successors to the widely used AVC (H.264 or MPEG-4 Part 10).
HDC (Hybrid Digital Coding) with SBR (spectral band replication) is a proprietary lossy audio compression codec developed by iBiquity for use with HD Radio.
High-Efficiency Advanced Audio Coding (HE-AAC) is an audio coding format for lossy data compression of digital audio defined as an MPEG-4 Audio profile in ISO/IEC 14496-3.
Huffyuv (or HuffYUV) is a lossless video codec created by Ben Rudiak-Gould which is meant to replace uncompressed YCbCr as a video capture format.
Indeo Video (commonly known now simply as "Indeo") is a video codec developed by Intel in 1992.
Inmarsat plc is a British satellite telecommunications company, offering global mobile services.
The International Telecommunication Union (ITU; Union Internationale des Télécommunications (UIT)), originally the International Telegraph Union (Union Télégraphique Internationale), is a specialized agency of the United Nations (UN) that is responsible for issues that concern information and communication technologies.
An Internet Draft (I-D) is a document published by the Internet Engineering Task Force (IETF) containing preliminary technical specifications, results of networking-related research, or other technical information.
Internet Low Bitrate Codec (iLBC) is an open source royalty-free narrowband speech audio coding format codec and reference implementation, developed by Global IP Solutions (GIPS) formerly Global IP Sound (acquired by Google Inc in 2011).
internet Speech Audio Codec (iSAC) is a wideband speech codec, developed by Global IP Solutions (GIPS) (acquired by Google Inc in 2011).
InterVideo was a software publisher specializing in multimedia-related programs.
iTunes is a media player, media library, Internet radio broadcaster, and mobile device management application developed by Apple Inc. It was announced on January 9, 2001.
The is a governmental agency that coordinates official development assistance (ODA) for the government of Japan.
is a Japanese holding company headquartered in Ginza, Chūō, Tokyo, Japan.
Lagarith is an open source lossless video codec written by Ben Greenwood.
LAME is a software encoder that converts audio to the MP3 file format.
LDAC is an audio coding technology developed by Sony, which allows streaming audio over Bluetooth connections up to 990 kbit/s at 24bit/96khz (also called High-resolution audio).
libavcodec is a free and open-source library of codecs for encoding and decoding video and audio data.
The Library of Congress (LOC) is the research library that officially serves the United States Congress and is the de facto national library of the United States.
libvpx is a free software video codec library from Google and the Alliance for Open Media (AOMedia).
This is a listing of open-source implementations of media formats—usually called codecs.
Lossless JPEG is a 1993 addition to JPEG standard by the Joint Photographic Experts Group to enable lossless compression.
Lossless predictive audio compression (LPAC) is an improved lossless audio compression algorithm developed by Tilman Liebchen, Marcus Purat and Peter Noll at, Technical University Berlin (TU Berlin), to compress PCM audio in a lossless manner, unlike conventional audio compression algorithms which are lossy.
Lossless Transform Audio Compression (LTAC) is a compression algorithm developed by Tilman Liebchen, Marcus Purat and Peter Noll at Institute for Telecommunications, Technical University Berlin (TU Berlin), to compress PCM audio in a lossless manner, unlike conventional lossy audio compression algorithms (like MP3).
MainConcept GmbH is a software company founded in Germany by Markus Moenig and Thomas Zabel.
Meridian Lossless Packing, also known as Packed PCM (PPCM), is a lossless compression technique for compressing PCM audio data developed by Meridian Audio, Ltd..
Microsoft Windows is a group of several graphical operating system families, all of which are developed, marketed, and sold by Microsoft.
MIL-STD-188 is a series of U.S. military standards relating to telecommunications.
MiniDisc (MD) is a magneto-optical disc-based data storage format offering a capacity of 74 minutes and, later, 80 minutes, of digitized audio or 1 gigabyte of Hi-MD data.
Mixed-excitation linear prediction (MELP) is a United States Department of Defense speech coding standard used mainly in military applications and satellite communications, secure voice, and secure radio devices.
Monkey's Audio is an algorithm and file format for lossless audio data compression.
Montpellier (Montpelhièr) is a city in southern France.
Lomonosov Moscow State University (MSU; Московский государственный университет имени М. В. Ломоносова, often abbreviated МГУ) is a coeducational and public research university located in Moscow, Russia.
In multimedia, Motion JPEG (M-JPEG or MJPEG) is a video compression format in which each video frame or interlaced field of a digital video sequence is compressed separately as a JPEG image.
Motion JPEG 2000 (MJ2 or MJP2) is a file format for motion sequences of JPEG 2000 images and associated audio, based on the MP4/QuickTime format.
MP3 (formally MPEG-1 Audio Layer III or MPEG-2 Audio Layer III) is an audio coding format for digital audio.
MPEG-1 Audio Layer III HD more commonly known and advertised by its abbreviation mp3HD is an audio compression codec developed by Technicolor formerly known as Thomson.
MPEG-1 is a standard for lossy compression of video and audio.
MPEG-1 Audio Layer I, commonly abbreviated to MP1, is one of three audio formats included in the MPEG-1 standard.
MPEG-1 Audio Layer II or MPEG-2 Audio Layer II (MP2, sometimes incorrectly called Musicam or MUSICAM) is a lossy audio compression format defined by ISO/IEC 11172-3 alongside MPEG-1 Audio Layer I and MPEG-1 Audio Layer III (MP3).
MPEG-2 (a.k.a. H.222/H.262 as defined by the ITU) is a standard for "the generic coding of moving pictures and associated audio information".
MPEG-4 is a method of defining compression of audio and visual (AV) digital data.
MPEG-4 Part 17, or MPEG-4 Timed Text, or MPEG-4 Streaming text format is the text-based subtitle format for MPEG-4, published as ISO/IEC 14496-17 in 2006.
MPEG-4 Part 2, MPEG-4 Visual (formally ISO/IEC 14496-2) is a video compression format developed by MPEG.
MPEG-4 Part 3 or MPEG-4 Audio (formally ISO/IEC 14496-3) is the third part of the ISO/IEC MPEG-4 international standard developed by Moving Picture Experts Group.
MPEG-4 SLS, or MPEG-4 Scalable to Lossless as per ISO/IEC 14496-3:2005/Amd 3:2006 (Scalable Lossless Coding), is an extension to the MPEG-4 Part 3 (MPEG-4 Audio) standard to allow lossless audio compression scalable to lossy MPEG-4 General Audio coding methods (e.g., variations of AAC).
The MSU Lossless Video Codec is a video codec developed by the Graphics & Media Lab Video Group of Moscow State University.
Multi-Band Excitation (MBE) is a series of proprietary speech coding standards developed by Digital Voice Systems, Inc.
Multiview Video Coding (MVC, also known as MVC 3D) is an stereoscopic video coding standard for video compression that allows for the efficient encoding of video sequences captured simultaneously from multiple camera angles in a single video stream.
Musepack or MPC is an open source lossy audio codec, specifically optimized for transparent compression of stereo audio at bitrates of 160–180 (manual set allows bitrates up to 320) kbit/s.
Nero AAC Codec is a set of software tools for encoding and decoding Advanced Audio Coding (AAC) format audio, and editing MPEG-4 metadata.
Nero Digital is a brand name applied to a suite of MPEG-4-compatible video and audio compression codecs developed by Nero AG of Germany and Ateme of France.
NewTek, Inc. is a San Antonio, Texas–based hardware and software company that produces live and post-production video tools and visual imaging software for personal computers.
Nintendo Co., Ltd. is a Japanese multinational consumer electronics and video game company headquartered in Kyoto.
The Nintendo 3DS is a handheld game console produced by Nintendo.
OMS Video is an open, royalty-free video compression specification under development by Sun Microsystems's Open Media Commons as part of the Open Media Stack.
On2 Technologies, formerly known as The Duck Corporation, was a small publicly traded company (on the American Stock Exchange), founded in New York City in 1992 and headquartered in Clifton Park, New York, that designed video codec technology.
OpenH264 is a free software library for real-time encoding and decoding video streams in the H.264/MPEG-4 AVC format.
OptimFROG is a proprietary lossless audio data compression codec developed by Florin Ghido.
Opus is a lossy audio coding format developed by the Xiph.Org Foundation and standardized by the Internet Engineering Task Force, designed to efficiently code speech and general audio in a single format, while remaining low-latency enough for real-time interactive communication and low-complexity enough for low-end embedded processors.
Original Sound Quality (OSQ) is an audio file format developed in 2002 by Steinberg Media Technologies GmbH and implemented e.g. in their audio editing software Wavelab 4 (and following releases) for lossless audio data compression.
PDC Enhanced Full Rate is a speech coding standard that was developed by ARIB in Japan and used in PDC mobile networks in Japan.
PDC Half Rate is a speech coding standard that was developed by ARIB in Japan and used in PDC mobile networks in Japan.
Perceptual audio coder (PAC) is an algorithm, like MPEG's MP3 standard, used to compress digital audio by removing extraneous information not perceived by most people.
Personal Digital Cellular (PDC) was a 2G mobile telecommunications standard used exclusively in Japan.
PictureTel Corporation, often shortened to PictureTel Corp., was one of the first commercial videoconferencing product companies.
Pixlet is a video codec created by Apple and based on wavelets, designed to enable viewing of full resolution, HD movies in real time at low DV data rates.
The PlayStation 4 (PS4) is an eighth-generation home video game console developed by Sony Interactive Entertainment.
The PlayStation Vita (officially abbreviated PS Vita or Vita) is a handheld game console developed and released by Sony Computer Entertainment.
Polycom is an American multinational corporation that develops video, voice and content collaboration and communication technology.
Portable Network Graphics (PNG, pronounced or) is a raster graphics file format that supports lossless data compression.
ProCoder is video-encoding and transcoding software initially developed by the Canopus Corporation, now Thomson SA.
Project 25 (P25 or APCO-25) is a suite of standards for digital mobile radio communications designed for use by public safety organizations in North America.
Pulse-amplitude modulation (PAM), is a form of signal modulation where the message information is encoded in the amplitude of a series of signal pulse.
Pulse-code modulation (PCM) is a method used to digitally represent sampled analog signals.
Pulse-density modulation, or PDM, is a form of modulation used to represent an analog signal with a binary signal.
QDesign Corporation was a developer of digital audio compression technologies.
Qualcomm code-excited linear prediction (QCELP), also known as Qualcomm PureVoice, is a speech codec developed in 1994 by Qualcomm to increase the speech quality of the IS-96A codec earlier used in CDMA networks.
QuickTime is an extensible multimedia framework developed by Apple Inc., capable of handling various formats of digital video, picture, sound, panoramic images, and interactivity.
QuickTime Animation format (also known as QuickTime RLE) is a video compression format and codec created by Apple Computer to enable playback of RGB video in real time without expensive hardware.
RAW Audio format or just RAW Audio is an audio file format for storing uncompressed audio in raw form.
RealAudio is a proprietary audio format developed by RealNetworks and first released in April 1995.
RealVideo is a suite of proprietary video compression formats developed by RealNetworks – the specific format changes with the version.
The Red Digital Cinema is an American company that manufactures digital cinematography and photography cameras and accessories.
Relaxed code-excited linear prediction (RCELP) is a method used in some advanced speech codecs.
RTAudio is a Microsoft produced adaptive wide-band speech codec.
The RTP audio/video profile (RTP/AVP) is a profile for Real-time Transport Protocol (RTP) that specifies the technical parameters of audio and video streams.
SBC, or low-complexity subband codec, is an audio subband codec specified by the Bluetooth Special Interest Group (SIG) for the Advanced Audio Distribution Profile (A2DP).
Scalable Video Coding (SVC) is the name for the Annex G extension of the H.264/MPEG-4 AVC video compression standard.
Script Creation Utility for Maniac Mansion Virtual Machine (ScummVM) is a set of game engine recreations.
Selectable Mode Vocoder (SMV) is variable bitrate speech coding standard used in CDMA2000 networks.
SheerVideo was a family of proprietary lossless video codecs developed by BitJazz Inc.
Shorten (SHN) is a file format used for compressing audio data.
SILK is an audio compression format and audio codec developed by Skype Limited.
Siren is a family of patented, transform-based, wideband audio coding formats and their audio codec implementations developed and licensed by PictureTel Corporation (acquired by Polycom, Inc. in 2001).
Skype is a telecommunications application software product that specializes in providing video chat and voice calls between computers, tablets, mobile devices, the Xbox One console, and smartwatches via the Internet and to regular telephones.
Skype for Business Server (formerly Microsoft Office Communications Server and Microsoft Lync Server) is real-time communications server software that provides the infrastructure for enterprise instant messaging, presence, VoIP, ad hoc and structured conferences (audio, video and web conferencing) and PSTN connectivity through a third-party gateway or SIP trunk.
Smacker video is a video file format (with the.SMK file extension) developed by RAD Game Tools, and primarily used for full-motion video in video games.
The Society of Cable Telecommunications Engineers or SCTE is a non-profit professional association for the advancement of technology, standards and workforce education related to cable telecommunications engineering.
Sorenson Media is an American software company specializing in video encoding technology.
Sound eXchange (SoX) is a cross-platform audio editing software.
Speex is an audio compression format specifically tuned for the reproduction of human speech and also a free software speech codec that may be used on VoIP applications and podcasts.
SPIRIT DSP is a Russian company that develops embedded software solutions for real-time voice and video communication over IP networks – voice and video engines.
Super Audio CD (SACD) is a read-only optical disc for audio storage, introduced in 1999.
SVOPC (Sinusoidal Voice Over Packet Coder) is a compression method for audio which is used by VOIP applications.
TechSmith Corporation is a software company developing screenshooting, screencasting and video editing software, for Windows and macOS, and licensing them to corporations, educational institutions, government agencies and small businesses.
The Telecommunications Industry Association (TIA) is accredited by the American National Standards Institute (ANSI) to develop voluntary, consensus-based industry standards for a wide variety of Information and Communication Technologies (ICT) products, and currently represents nearly 400 companies.
TETRAPOL is a digital professional mobile radio standard, as defined by the Tetrapol Publicly Available Specification (PAS), in use by professional user groups, such as public safety, military, industry and transportation organizations throughout the world.
Texas Instruments Inc. (TI) is an American technology company that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally.
Theora is a free lossy video compression format.
TMPGEnc or TSUNAMI MPEG Encoder is a video transcoder software application primarily for encoding video files to VCD and SVCD-compliant MPEG video formats and was developed by Hiroyuki Hori and Pegasys Inc.
TooLAME is a free software MPEG-1 Layer II (MP2) audio encoder written primarily by Mike Cheng.
Tremor by the Xiph.Org Foundation is a fixed-point version of the Vorbis decoder for those platforms without floating point operations.
Truespeech is a proprietary audio codec produced by the DSP Group.
True Audio (TTA) is a lossless compressor for multichannel 8, 16 and 24 bits audio data.
ttyrec is a program and/or its file format capable of recording the TTY output of a text-mode program together with timestamps and then replaying it.
TwinVQ (transform-domain weighted interleave vector quantization) is an audio compression technique developed by Nippon Telegraph and Telephone Corporation (NTT) Human Interface Laboratories (now Cyber Space Laboratories) in 1994.
The Department of Defense (DoD, USDOD, or DOD) is an executive branch department of the federal government of the United States charged with coordinating and supervising all agencies and functions of the government concerned directly with national security and the United States Armed Forces.
A United States defense standard, often called a military standard, "MIL-STD", "MIL-SPEC", or (informally) "MilSpecs", is used to help achieve standardization objectives by the U.S. Department of Defense.
UT Video Codec Suite is a fast, lossless video codec, developed by Takeshi Umezawa and released under the free GNU General Public License.
Variable-Rate Multimode Wideband (VMR-WB) is a source-controlled variable-rate multimode codec designed for robust encoding/decoding of wideband/narrowband speech.
SMPTE 421M, informally known as VC-1, is a video coding format.
Vector sum excited linear prediction (VSELP) is a speech coding method used in several cellular standards.
In computing, Virtual Network Computing (VNC) is a graphical desktop sharing system that uses the Remote Frame Buffer protocol (RFB) to remotely control another computer.
VisualOn is a Silicon Valley-based multimedia software company that provides high-definition audio and video entertainment to smartphones, tablets, laptops, connected TVs and other mobile and convergent devices.
VMware Workstation is a hosted hypervisor that runs on x64 versions of Windows and Linux operating systems (an x86 version of earlier releases was available); it enables users to set up virtual machines (VMs) on a single physical machine, and use them simultaneously along with the actual machine.
Vorbis is a free and open-source software project headed by the Xiph.Org Foundation.
On2 TrueMotion VP3 is a (royalty-free) lossy video compression format and video codec.
On2 TrueMotion VP6 is a proprietary lossy video compression format and video codec.
VP8 is an open and royalty free video compression format owned by Google and created by On2 Technologies as a successor to VP7.
VP9 is an open and royalty-free video coding format developed by Google.
Waveform Audio File Format (WAVE, or more commonly known as WAV due to its filename extension - both pronounced "wave") (rarely, Audio for Windows) is a Microsoft and IBM audio file format standard for storing an audio bitstream on PCs.
WaveLab is a digital audio editor and recording computer software application for Windows and macOS, created by Steinberg.
WavPack is a free and open-source lossless audio compression format.
The Wii is a home video game console released by Nintendo on November 19, 2006.
Windows Media Audio (WMA) is the name of a series of audio codecs and their corresponding audio coding formats developed by Microsoft.
Windows Media Encoder is a discontinued, freeware media encoder developed by Microsoft which enables content developers to convert or capture both live and prerecorded audio, video, and computer screen images to Windows Media formats for live and on-demand delivery.
Windows Media Video (WMV) is a series of video codecs and their corresponding video coding formats developed by Microsoft.
x264 is a free and open-source software library and a command-line utility developed by VideoLAN for encoding video streams into the H.264/MPEG-4 AVC format.
x265 is a library for encoding video into the High Efficiency Video Coding (HEVC/H.265) video compression format that was developed and standardized by the ISO/IEC MPEG and ITU-T VCEG.
XAVC is a recording format that was introduced by Sony on October 30, 2012.
The Xbox 360 is a home video game console developed by Microsoft.
Xiph.Org Foundation is a non-profit organization that produces free multimedia formats and software tools.
Xvid (formerly "XviD") is a video codec library following the MPEG-4 video coding standard, specifically MPEG-4 Part 2 Advanced Simple Profile (ASP).
YULS or YUVsoft's Lossless Video Codec, a lossless video codec developed by YUVsoft, was designed to produce highly compressed lossless video.
The 3rd Generation Partnership Project (3GPP) is a collaboration between groups of telecommunications standards associations, known as the Organizational Partners.
3ivx is a video codec suite, created by 3ivx Technologies, based in Sydney, Australia, that allows the creation of MPEG-4 compliant data streams.
The 3rd Generation Partnership Project 2 (3GPP2) is a collaboration between telecommunications associations to make a globally applicable third generation (3G) mobile phone system specification within the scope of the ITU's IMT-2000 project.