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Video codec

Index Video codec

A video codec is an electronic circuit or software that compresses or decompresses digital video. [1]

100 relations: Apple Inc., Apple ProRes, ATI Avivo, Avid DNxHD, Bit rate, BSD licenses, Chroma subsampling, Chrominance, Cinepak, Codec, Compact disc, Comparison of video codecs, Compression artifact, Data compression, Decimation (signal processing), Digital cable, Digital terrestrial television, Digital video, Dirac (video compression format), Discrete cosine transform, Display resolution, DivX, DivX, Inc., DV, DVD, Electronic circuit, Engineer, Entropy encoding, Ffdshow, FFmpeg, Flash Video, Frame rate, Free software, GStreamer, H.262/MPEG-2 Part 2, H.263, H.264/MPEG-4 AVC, Indeo, Intel, Internet video, IP camera, K-Lite Codec Pack, Latency (engineering), Libavcodec, Libvpx, List of open-source codecs, Lossy compression, Luma (video), Macroblock, Magnetic tape, ..., Mathematician, MPEG-4, MPlayer, Multiplexing, Nero AG, Nero Digital, On2 Technologies, Open-source software, Operating theater, Panasonic, Proprietary software, Quantization (image processing), QuickTime, Raw image format, RealNetworks, RealVideo, Reference implementation, Remotely operated underwater vehicle, Sampling (signal processing), Slepian–Wolf coding, Society of Motion Picture and Television Engineers, Software, Sony, Sorenson Media, Subjective video quality, Theora, Transcoding, Ultra-high-definition television, Uncompressed video, Unmanned aerial vehicle, Variable-length code, VC-1, Video coding format, Video compression picture types, Video on demand, Video quality, Videotelephony, VLC media player, VP3, VP6, VP8, VP9, Wavelet, Windows Media Video, X264, X265, Xiph.Org Foundation, Xvid, YCbCr, 3ivx. Expand index (50 more) »

Apple Inc.

Apple Inc. is an American multinational technology company headquartered in Cupertino, California, that designs, develops, and sells consumer electronics, computer software, and online services.

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Apple ProRes

Apple ProRes is a lossy video compression format developed by Apple Inc. for use in post-production that supports up to 8K.

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ATI Avivo

ATI Avivo is a set of hardware and low level software features present on the ATI Radeon R520 family of GPUs and all later ATI Radeon products.

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Avid DNxHD

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.

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Bit rate

In telecommunications and computing, bit rate (bitrate or as a variable R) is the number of bits that are conveyed or processed per unit of time.

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BSD licenses

BSD licenses are a family of permissive free software licenses, imposing minimal restrictions on the use and redistribution of covered software.

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Chroma subsampling

Chroma subsampling is the practice of encoding images by implementing less resolution for chroma information than for luma information, taking advantage of the human visual system's lower acuity for color differences than for luminance.

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Chrominance

Chrominance (chroma or C for short) is the signal used in video systems to convey the color information of the picture, separately from the accompanying luma signal (or Y for short).

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Cinepak

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.

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Codec

A codec is a device or computer program for encoding or decoding a digital data stream or signal.

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Compact disc

Compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony and released in 1982.

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Comparison of video codecs

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.

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Compression artifact

A compression artifact (or artefact) is a noticeable distortion of media (including images, audio, and video) caused by the application of lossy compression.

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Data compression

In signal processing, data compression, source coding, or bit-rate reduction involves encoding information using fewer bits than the original representation.

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Decimation (signal processing)

In digital signal processing, decimation is the process of reducing the sampling rate of a signal.

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Digital cable

Digital cable is any type of cable television distribution using digital video compression for distribution.

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Digital terrestrial television

Digital terrestrial television (DTTV or DTT) is a technology for broadcast television in which land-based (terrestrial) television stations broadcast television content by radio waves to televisions in consumers' residences in a digital format.

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Digital video

Digital video is an electronic representation of moving visual images (video) in the form of encoded digital data.

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Dirac (video compression format)

Dirac is an open and royalty-free video compression format, specification and system developed by BBC Research & Development.

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Discrete cosine transform

A discrete cosine transform (DCT) expresses a finite sequence of data points in terms of a sum of cosine functions oscillating at different frequencies.

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Display resolution

The display resolution or display modes of a digital television, computer monitor or display device is the number of distinct pixels in each dimension that can be displayed.

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DivX

DivX is a brand of video codec products developed by DivX, LLC.

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DivX, Inc.

DivX, Inc. (now DivX, LLC and also formerly known as DivXNetworks, Inc.), is a privately held video technology company based in San Diego, California.

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DV

DV is a format for storing digital video.

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DVD

DVD (an abbreviation of "digital video disc" or "digital versatile disc") is a digital optical disc storage format invented and developed by Philips and Sony in 1995.

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Electronic circuit

An electronic circuit is composed of individual electronic components, such as resistors, transistors, capacitors, inductors and diodes, connected by conductive wires or traces through which electric current can flow.

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Engineer

Engineers, as practitioners of engineering, are people who invent, design, analyze, build, and test machines, systems, structures and materials to fulfill objectives and requirements while considering the limitations imposed by practicality, regulation, safety, and cost.

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Entropy encoding

In information theory an entropy encoding is a lossless data compression scheme that is independent of the specific characteristics of the medium.

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Ffdshow

ffdshow is a codec mainly used for decoding of video in the MPEG-4 ASP (e.g. encoded with DivX or Xvid) and H.264/MPEG-4 AVC video formats, but it supports numerous other video and audio formats as well.

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FFmpeg

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.

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Flash Video

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.

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Frame rate

Frame rate (expressed in or fps) is the frequency (rate) at which consecutive images called frames appear on a display.

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Free software

Free software or libre software is computer software distributed under terms that allow users to run the software for any purpose as well as to study, change, and distribute it and any adapted versions.

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GStreamer

GStreamer is a pipeline-based multimedia framework that links together a wide variety of media processing systems to complete complex workflows.

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H.262/MPEG-2 Part 2

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).

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H.263

H.263 is a video compression standard originally designed as a low-bit-rate compressed format for videoconferencing.

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H.264/MPEG-4 AVC

H.264 or MPEG-4 Part 10, Advanced Video Coding (MPEG-4 AVC) is a block-oriented motion-compensation-based video compression standard.

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Indeo

Indeo Video (commonly known now simply as "Indeo") is a video codec developed by Intel in 1992.

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Intel

Intel Corporation (stylized as intel) is an American multinational corporation and technology company headquartered in Santa Clara, California, in the Silicon Valley.

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Internet video

Internet video or online video is the general field that deals with the transmission of video over the Internet.

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IP camera

An Internet Protocol camera, or IP camera, is a type of digital video camera commonly employed for surveillance, and which, unlike analog closed-circuit television (CCTV) cameras, can send and receive data via a computer network and the Internet.

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K-Lite Codec Pack

The K-Lite Codec Pack is a collection of audio and video codecs for Microsoft Windows that enables an operating system and its software to play various audio and video formats generally not supported by the operating system itself.

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Latency (engineering)

Latency is a time interval between the stimulation and response, or, from a more general point of view, a time delay between the cause and the effect of some physical change in the system being observed.

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Libavcodec

libavcodec is a free and open-source library of codecs for encoding and decoding video and audio data.

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Libvpx

libvpx is a free software video codec library from Google and the Alliance for Open Media (AOMedia).

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List of open-source codecs

This is a listing of open-source implementations of media formats—usually called codecs.

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Lossy compression

In information technology, lossy compression or irreversible compression is the class of data encoding methods that uses inexact approximations and partial data discarding to represent the content.

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Luma (video)

In video, luma represents the brightness in an image (the "black-and-white" or achromatic portion of the image).

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Macroblock

Macroblock is a processing unit in image and video compression formats based on linear block transforms, such as the discrete cosine transform (DCT).

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Magnetic tape

Magnetic tape is a medium for magnetic recording, made of a thin, magnetizable coating on a long, narrow strip of plastic film.

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Mathematician

A mathematician is someone who uses an extensive knowledge of mathematics in his or her work, typically to solve mathematical problems.

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MPEG-4

MPEG-4 is a method of defining compression of audio and visual (AV) digital data.

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MPlayer

MPlayer is a free and open media player software.

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Multiplexing

In telecommunications and computer networks, multiplexing (sometimes contracted to muxing) is a method by which multiple analog or digital signals are combined into one signal over a shared medium.

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Nero AG

Nero AG (known as Ahead Software AG until 2005) is a German computer software company that is especially well known for its CD/DVD/BD burning suite, Nero Burning ROM, and is currently the global market leader for this recording software.

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Nero Digital

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.

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On2 Technologies

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.

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Open-source software

Open-source software (OSS) is a type of computer software whose source code is released under a license in which the copyright holder grants users the rights to study, change, and distribute the software to anyone and for any purpose.

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Operating theater

An operating theater (also known as an operating room, operating suite, operation theatre, operation suite or OR) is a facility within a hospital where surgical operations are carried out in a sterile environment.

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Panasonic

, formerly known as, is a Japanese multinational electronics corporation headquartered in Kadoma, Osaka, Japan.

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Proprietary software

Proprietary software is non-free computer software for which the software's publisher or another person retains intellectual property rights—usually copyright of the source code, but sometimes patent rights.

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Quantization (image processing)

Quantization, involved in image processing, is a lossy compression technique achieved by compressing a range of values to a single quantum value.

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QuickTime

QuickTime is an extensible multimedia framework developed by Apple Inc., capable of handling various formats of digital video, picture, sound, panoramic images, and interactivity.

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Raw image format

A camera raw image file contains minimally processed data from the image sensor of either a digital camera, image scanner, or motion picture film scanner.

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RealNetworks

RealNetworks, Inc. is a provider of Internet streaming media delivery software and services based in Seattle, Washington, United States.

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RealVideo

RealVideo is a suite of proprietary video compression formats developed by RealNetworks – the specific format changes with the version.

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Reference implementation

In the software development process, a reference implementation (or, less frequently, sample implementation or model implementation) is the standard from which all other implementations and corresponding customizations are derived.

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Remotely operated underwater vehicle

A remotely operated underwater vehicle (ROV) is a tethered underwater mobile device.

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Sampling (signal processing)

In signal processing, sampling is the reduction of a continuous-time signal to a discrete-time signal.

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Slepian–Wolf coding

In information theory and communication, the Slepian–Wolf coding, also known as the Slepian–Wolf bound, is a result in distributed source coding discovered by David Slepian and Jack Wolf in 1973.

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Society of Motion Picture and Television Engineers

The Society of Motion Picture and Television Engineers (SMPTE) (rarely), founded in 1916 as the Society of Motion Picture Engineers or SMPE, is a global professional association, of engineers, technologists, and executives working in the media and entertainment industry.

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Software

Computer software, or simply software, is a generic term that refers to a collection of data or computer instructions that tell the computer how to work, in contrast to the physical hardware from which the system is built, that actually performs the work.

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Sony

is a Japanese multinational conglomerate corporation headquartered in Kōnan, Minato, Tokyo.

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Sorenson Media

Sorenson Media is an American software company specializing in video encoding technology.

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Subjective video quality

Subjective video quality is video quality as experienced by humans.

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Theora

Theora is a free lossy video compression format.

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Transcoding

Transcoding is the direct digital-to-digital conversion of one encoding to another, such as for movie data files (e.g., PAL, SECAM, NTSC), audio files (e.g., MP3, WAV), or character encoding (e.g., UTF-8, ISO/IEC 8859).

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Ultra-high-definition television

Ultra-high-definition television (also known as Ultra HD television, Ultra HD, UHDTV, UHD and Super Hi-Vision) today includes 4K UHD and 8K UHD, which are two digital video formats that were first proposed by NHK Science & Technology Research Laboratories and later defined and approved by the International Telecommunication Union (ITU).

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Uncompressed video

Uncompressed video is digital video that either has never been compressed or was generated by decompressing previously compressed digital video.

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Unmanned aerial vehicle

An unmanned aerial vehicle (UAV), commonly known as a drone, is an aircraft without a human pilot aboard.

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Variable-length code

In coding theory a variable-length code is a code which maps source symbols to a variable number of bits.

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VC-1

SMPTE 421M, informally known as VC-1, is a video coding format.

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Video coding format

A video coding format (or sometimes video compression format) is a content representation format for storage or transmission of digital video content (such as in a data file or bitstream).

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Video compression picture types

In the field of video compression a video frame is compressed using different algorithms with different advantages and disadvantages, centered mainly around amount of data compression.

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Video on demand

Video on demand is a programming system which allows users to select and watch/listen to video or audio content such as movies and TV shows whenever they choose, rather than at a scheduled broadcast time, the method that prevailed with over-the-air programming during the 20th century.

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Video quality

Video quality is a characteristic of a video passed through a video transmission/processing system, a formal or informal measure of perceived video degradation (typically, compared to the original video).

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Videotelephony

Videotelephony comprises the technologies for the reception and transmission of audio-video signals by users at different locations, for communication between people in real-time.

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VLC media player

VLC media player (commonly known as VLC) is a free and open-source, portable, cross-platform media player and streaming media server developed by the VideoLAN project.

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VP3

On2 TrueMotion VP3 is a (royalty-free) lossy video compression format and video codec.

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VP6

On2 TrueMotion VP6 is a proprietary lossy video compression format and video codec.

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VP8

VP8 is an open and royalty free video compression format owned by Google and created by On2 Technologies as a successor to VP7.

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VP9

VP9 is an open and royalty-free video coding format developed by Google.

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Wavelet

A wavelet is a wave-like oscillation with an amplitude that begins at zero, increases, and then decreases back to zero.

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Windows Media Video

Windows Media Video (WMV) is a series of video codecs and their corresponding video coding formats developed by Microsoft.

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X264

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.

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X265

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.

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Xiph.Org Foundation

Xiph.Org Foundation is a non-profit organization that produces free multimedia formats and software tools.

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Xvid

Xvid (formerly "XviD") is a video codec library following the MPEG-4 video coding standard, specifically MPEG-4 Part 2 Advanced Simple Profile (ASP).

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YCbCr

YCbCr, Y′CbCr, or Y Pb/Cb Pr/Cr, also written as YCBCR or Y'CBCR, is a family of color spaces used as a part of the color image pipeline in video and digital photography systems.

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3ivx

3ivx is a video codec suite, created by 3ivx Technologies, based in Sydney, Australia, that allows the creation of MPEG-4 compliant data streams.

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Redirects here:

Lossless video codec, Video Decode, Video Decoding, Video decode.

References

[1] https://en.wikipedia.org/wiki/Video_codec

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