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Encyclopedia > Flash Video
Flash Video
File name extension .flv, .f4v, .f4p, .f4a, .f4b
Internet media type video/x-flv, video/mp4, video/x-m4v, audio/mp4a-latm, video/3gpp, video/quicktime, audio/mp4
Developed by Adobe Systems (originally developed by Macromedia)
Type of format media container

Flash Video is the name of a file format used to deliver video over the Internet using Adobe Flash Player (formerly known as Macromedia Flash Player) version 6, 7, 8, or 9. Until version 9 update 2 of the Flash Player, Flash Video referred to a proprietary file format, having the extension FLV. The most recent public release of Flash Player supports H.264 video and HE-AAC audio. Flash Video content may also be embedded within SWF files. Notable users of the Flash Video format include YouTube, Google Video, Reuters.com, Yahoo! Video, and many television news operations are also using Flash Video on their websites. Image File history File links FlashVideo. ... A filename extension is a suffix to the name of a computer file applied to indicate its type. ... An Internet media type,[1] originally called a MIME type after MIME and sometimes a Content-type after the name of a header in several protocols whose value is such a type, is a two-part identifier for file formats on the Internet. ... Adobe Systems (pronounced a-DOE-bee IPA: ) (NASDAQ: ADBE) (LSE: ABS) is an American computer software company headquartered in San Jose, California, USA. Adobe was founded in December 1982[1] by John Warnock and Charles Geschke, who established the company after leaving Xerox PARC in order to develop and sell... Macromedia was an American graphics and web development software house headquartered in San Francisco, California producing such products as Macromedia Flash. ... A container format is a computer file format that can contain various types of data, compressed by means of standardized codecs. ... Adobe Systems (pronounced a-DOE-bee IPA: ) (NASDAQ: ADBE) (LSE: ABS) is an American computer software company headquartered in San Jose, California, USA. Adobe was founded in December 1982[1] by John Warnock and Charles Geschke, who established the company after leaving Xerox PARC in order to develop and sell... The Adobe Flash Player is a widely distributed multimedia and application player created and distributed by Macromedia (a division of Adobe Systems). ... Macromedia was an American graphics and web development software house headquartered in San Francisco, California producing such products as Macromedia Flash. ... 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). ... High Efficiency AAC (HE-AAC) is a lossy data compression scheme for digital audio. ... This article is about the proprietary file format . ... YouTube is a popular video sharing website where users can upload, view and share video clips. ... Google Video logo Google Video is a free video sharing and video search engine service from Google that allows anyone to upload video clips to Googles web servers as well as make their own media available free of charge; some videos are also offered for sale through the Google... Reuters Group plc (LSE: RTR and NASDAQ: RTRSY); pronounced is known as a financial market data provider and a news service that provides reports from around the world to newspapers and broadcasters. ... Yahoo! Video began as a video search engine and later in 2006 added the ability for anyone to upload video clips to Yahoo! Videos web servers. ...


Flash Video is viewable on most operating systems, via the widely available Adobe Flash Player and web browser plugin, or one of several third-party programs such as MPlayer, VLC media player, Quicktime, or any player which uses DirectShow filters (such as Media Player Classic, Windows Media Player, and Windows Media Center) when the ffdshow filter is installed. An example of a Web browser (Mozilla Firefox) A web browser is a software application that enables a user to display and interact with text, images, videos, music and other information typically located on a Web page at a website on the World Wide Web or a local area network. ... For other uses, see Plug in. ... This article is about the open source media player. ... VLC media player is a free software media player by the VideoLAN project. ... QuickTime is a multimedia framework developed by Apple Inc. ... Logo of the DirectX Media SDK - the first time DirectShow was distributed under its current name. ... Media Player Classic (MPC) is a compact free software media player for Microsoft Windows. ... Windows Media Player (WMP) is a digital media player and media library application developed by Microsoft that is used for playing audio, video and viewing images on personal computers running the Microsoft Windows operating system, as well as on Pocket PC and Windows Mobile-based devices. ... Windows Media Center is an application designed to serve as a home-entertainment hub. ... ffdshow is an open source decoder (and encoder) mainly used for the fast and high-quality decoding of video in the MPEG-4 ASP (e. ...

Contents

Flash Player

Main article: Adobe Flash Player

The Adobe Flash Player is a multimedia and application player originally developed by Macromedia and acquired by Adobe Systems. It plays SWF files which can be created by the Adobe Flash authoring tool, Adobe Flex, or a number of other Adobe Systems and third party tools. It has support for a programming language called ActionScript, which can be used to display Flash Video from an SWF file. Because the Flash Player runs as a browser plug-in, it is possible to embed Flash Video in web pages and view the video within a web browser. The primary downside of Flash's FLV player is that it is very inefficient compared to a directly embedded video file, dropping frames when running on slow clients that run directly embedded video perfectly. The Adobe Flash Player is a widely distributed multimedia and application player created and distributed by Macromedia (a division of Adobe Systems). ... Adobe Systems (pronounced a-DOE-bee IPA: ) (NASDAQ: ADBE) (LSE: ABS) is an American computer software company headquartered in San Jose, California, USA. Adobe was founded in December 1982[1] by John Warnock and Charles Geschke, who established the company after leaving Xerox PARC in order to develop and sell... This article is about the proprietary file format . ... Adobe Flash - previously called Shockwave Flash and Macromedia Flash - is a set of multimedia technologies developed and distributed by Adobe Systems and earlier by Macromedia. ... Adobe Flex is a collection of technologies released by Adobe Systems for the development and deployment of cross platform, rich Internet applications based on the proprietary Adobe Flash platform. ... Adobe Systems (pronounced a-DOE-bee IPA: ) (NASDAQ: ADBE) (LSE: ABS) is an American computer software company headquartered in San Jose, California, USA. Adobe was founded in December 1982[1] by John Warnock and Charles Geschke, who established the company after leaving Xerox PARC in order to develop and sell... ActionScript is a scripting language based on ECMAScript, used primarily for the development of websites and software using the Adobe Flash Player platform (in the form of SWF files embedded into Web pages). ... An example of a Web browser (Mozilla Firefox) A web browser is a software application that enables a user to display and interact with text, images, videos, music and other information typically located on a Web page at a website on the World Wide Web or a local area network. ... A plugin (or plug-in) is a computer program that can, or must, interact with another program to provide a certain, usually very specific, function. ...


Format details

Commonly, Flash Video files contain video bit streams which are a variant of the H.263 video standard, under the name of Sorenson Spark. Flash Player 8 and newer revisions support the playback of On2 TrueMotion VP6 video bit streams. On2 VP6 can provide a higher visual quality than Sorenson Spark, especially when using lower bit rates. On the other hand it is computationally more complex and therefore will not run as well on certain older system configurations. Flash Player 9 Update 3 includes support for H.264 video standard (also known as MPEG-4 part 10, or AVC) which is even more computationally demanding, but offers significantly better quality/bitrate ratio. A bitstream or bit stream is a time series of bits. ... H.263 is a video codec designed by the ITU-T as a low-bitrate encoding solution for videoconferencing. ... The Sorenson codec (also known as Sorenson Video Codec 3 or SVQ3) is a digital video codec devised by the company Sorenson Media and used by Apples QuickTime and the newest version of Macromedia Flash, a special version called Sorenson Spark. ... NatusRoma 00:49, 12 Jun 2005 (UTC) Categories: Possible copyright violations ... TrueMotion VP6 is a video codec developed by On2 Technologies as a successor to earlier efforts such as VP3 and VP5. ... In telecommunications and computing, bit rate (sometimes written bitrate) is the frequency at which bits are passing a given (physical or metaphorical) point. It is quantified using the bit per second (bit/s) unit. ... 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). ... H.264 is a standard for video compression. ...


The Flash Video file format supports two versions of a so called 'screenshare' codec which is an encoding format designed for screencasts. Both these formats are bitmap tile based, can be lossy by reducing color depths and are compressed using zlib. The second version is only playable in Flash Player 8 and newer. A screencast is a digital recording of computer screen output, often containing audio narration. ... A lossy data compression method is one where compressing a file and then decompressing it retrieves a file that may well be different to the original, but is close enough to be useful in some way. ... Color depth is a computer graphics term describing the number of bits used to represent the color of a single pixel in a bitmapped image or video frame buffer. ... zlib is an open-source, cross-platform data compression library. ...


Support for encoding Flash Video files is provided by an encoding tool included with Adobe's Macromedia Flash Professional 8 product, On2's Flix encoding tools, Sorenson Squeeze, FFmpeg and other third party tools. Adobe Flash - previously called Shockwave Flash and Macromedia Flash - is a set of multimedia technologies developed and distributed by Adobe Systems and earlier by Macromedia. ... NatusRoma 00:49, 12 Jun 2005 (UTC) Categories: Possible copyright violations ... Video Compression: Sorenson Squeeze Software During the 1990s, the increasing popularity of the Internet as a means to stream video fueled the markets need for reliable video compression tools. ... FFmpeg is a collection of software libraries that can record, convert and stream digital audio and video in numerous formats. ...


Audio in Flash Video files is usually encoded as MP3. However, Flash Video files recorded from the user's microphone use the proprietary Nellymoser codec. FLV files also support uncompressed audio or ADPCM format audio. Recent versions of Flash Player 9 support AAC (HE-AAC/AAC SBR, AAC Main Profile, and AAC-LC). For other uses, see MP3 (disambiguation). ... Nellymoser is a single-channel (mono) format optimized for low-bitrate transmission of audio. ... Pulse-code modulation (PCM) is a modulation technique. ... Advanced Audio Coding (AAC) is a standardized, lossy compression and encoding scheme for digital audio. ... High Efficiency AAC (HE-AAC) is a lossy data compression scheme for digital audio. ... Advanced Audio Coding (AAC) is a standardized, lossy compression and encoding scheme for digital audio. ... Spectral band replication (SBR) is a technology to enhance audio or speech codecs, especially at low bit rates. ...


On August 20, 2007, Adobe announced on its blog that with Update 3 of the Flash Player 9 (released), Flash Video will also support the MPEG-4 international standard. [1] Specifically, Flash Player will have support for video compressed in H.264 (MPEG-4 Part 10), audio compressed using AAC (MPEG-4 Part 3), the MP4, M4V, M4A, 3GP and MOV multimedia container formats (MPEG-4 Part 14), 3GPP Timed Text specification (MPEG-4 Part 17) which is a standardized subtitle format and partial parsing support for the 'ilst' atom which is the ID3 equivalent iTunes uses to store metadata. is the 232nd day of the year (233rd in leap years) in the Gregorian calendar. ... Year 2007 (MMVII) was a common year starting on Monday of the Gregorian calendar in the 21st century. ... MPEG-4 is a collection of methods defining compression of audio and visual (AV) digital data. ... 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). ... Advanced Audio Coding (AAC) is a standardized, lossy compression and encoding scheme for digital audio. ... MP4 can refer to: MPEG-4 Part 14 file format Møller-Plesset perturbation theory of the fourth order This is a disambiguation page — a navigational aid which lists pages that might otherwise share the same title. ... 3GP is a multimedia container format defined by the Third Generation Partnership Project (3GPP) for use on 3G mobile phones. ... MOV may refer to MOV (x86 instruction) Metal oxide varistor (an electronic component) .mov (QuickTimes file format) The Mid-Ohio Valley Motor Operated Valve Measurable Organizational Value This page concerning a three-letter acronym or abbreviation is a disambiguation page—a list of articles associated with the same title. ... A container format is a computer file format that can contain various types of data, compressed by means of standardized codecs. ... This article or section does not adequately cite its references or sources. ... Timed Text refers to the presentation of text media in synchrony with other media, such as audio and video. ... This article or section does not cite its references or sources. ... This article is about the iTunes application. ... Metadata is data about data. ...


A Flash Player 9 update including a new MP4 H.264 component was released on December 3, 2007.[2] is the 337th day of the year (338th in leap years) in the Gregorian calendar. ... Year 2007 (MMVII) was a common year starting on Monday of the Gregorian calendar in the 21st century. ...


File formats

Because of restrictions in the .flv format, Adobe Systems has created new file formats listed below. Flash player does not check the extension of the file, but rather looks inside the file to detect which format it is.

File Extension Mime Type Description
.f4v video/mp4 Video for Adobe Flash Player
.f4p video/mp4 Protected Video for Adobe Flash Player
.f4a audio/mp4 Audio for Adobe Flash Player
.f4b audio/mp4 Audio Book for Adobe Flash Player

Codec support

Codecs Support
H.264 Yes
VP6 Yes
MPEG-4 ASP No
Sorenson H.263 Yes

FLV players

An FLV player is a type of media player that is used for playing flash video from PC as well as from Internet websites. An FLV player can be used standalone, without the need of the Adobe Flash authoring or developmental tools. This article is about media players in general. ... Flash Video is the name of a file format used to deliver video over the Internet using Adobe Flash Player (formerly known as Macromedia Flash Player) version 6, 7, 8, or 9. ... A stylised illustration of a personal computer A personal computer (PC) is a computer whose original sales price, size, and capabilities make it useful for individuals, intended to be operated directly by an end user, with no intervening computer operator. ... Adobe Flash - previously called Shockwave Flash and Macromedia Flash - is a set of multimedia technologies developed and distributed by Adobe Systems and earlier by Macromedia. ...


There are a few video players specifically made to play FLV files, including:

Other media players based on the FFmpeg libraries should be able to play back Flash Video format video[3]. Listed below are some examples of media players supporting the Flash Video format: FFmpeg is a collection of software libraries that can record, convert and stream digital audio and video in numerous formats. ...

Adobe Media Player (codename Philo) is a desktop media player that offers users to manage and interact with their media content, and allows content publishers to define branding and advertising in and around their content. ... GOM Player (Gretech Online Movie Player) is a freeware media player for Microsoft Windows. ... This article is about the open source media player. ... FFmpeg is a collection of software libraries that can record, convert and stream digital audio and video in numerous formats. ... RealPlayer, briefly known also as RealOne Player, is a cross-platform media player by RealNetworks that plays a number of multimedia formats including MP3, MPEG-4, QuickTime, Windows Media and multiple versions of proprietary RealAudio and RealVideo formats. ... VLC media player is a free software media player by the VideoLAN project. ... xine (officially pronounced [ksi:n], like the name Maxine without Ma[1]) is a multimedia playback engine for Unix-like operating systems released under the GNU General Public License. ... FFmpeg is a collection of software libraries that can record, convert and stream digital audio and video in numerous formats. ... ffdshow is an open source decoder (and encoder) mainly used for the fast and high-quality decoding of video in the MPEG-4 ASP (e. ... FFmpeg is a collection of software libraries that can record, convert and stream digital audio and video in numerous formats. ... Logo of the DirectX Media SDK - the first time DirectShow was distributed under its current name. ... Media Player Classic (MPC) is a compact free software media player for Microsoft Windows. ... Winamp is a proprietary media player written by Nullsoft, now a subsidiary of Time Warner. ... Windows Media Player (WMP) is a digital media player and media library application developed by Microsoft that is used for playing audio, video and viewing images on personal computers running the Microsoft Windows operating system, as well as on Pocket PC and Windows Mobile-based devices. ... Zoom Player is a computer program that plays video and sound files on Windows-based personal computers. ... QuickTime is a multimedia framework developed by Apple Inc. ...

Delivery options

Flash Video files can be delivered in several different ways:

  • As a standalone .FLV file. Although Flash Video files are normally delivered using a Flash player for control, the .FLV file itself is fully-functional on its own and can be played or converted to other formats from local storage such as a hard disk or a CD.
  • Embedded in an SWF file using the Flash authoring tool (supported in Flash Player 6 and later). The entire file must be transferred before playback can begin. Changing the video requires rebuilding the SWF file.
  • Progressive download via HTTP (supported in Flash Player 7 and later). This method uses ActionScript to include an externally hosted Flash Video file client-side for playback. Progressive download has several advantages, including buffering, use of generic HTTP servers, and the ability to reuse a single SWF player for multiple Flash Video sources. Flash Player 8 includes support for random access within video files using the partial download functionality of HTTP, sometimes this is referred to as streaming. However, unlike streaming using RTMP, HTTP "streaming" does not support real-time broadcasting. Streaming via HTTP requires a custom player and the injection of specific Flash Video metadata containing the exact starting position in bytes and timecode of each keyframe. Using this specific information, a custom Flash Video player can request any part of the Flash Video file starting at a specified keyframe. For example, Google Video and Youtube support progressive downloading and can seek to any part of the video before buffering is complete. The server-side part of this "HTTP pseudo-streaming" method is fairly simple to implement, for example in PHP, as an Apache HTTPD module, or a lighttpd module.
  • Streamed via RTMP to the Flash Player using the Flash Media Server (formerly called Flash Communication Server), VCS, ElectroServer, Wowza Pro or the open source Red5 server. As of April 2008, there are four stream recorders available for this protocol, re-encoding screencast software excluded.

HTTP (for HyperText Transfer Protocol) is the primary method used to convey information on the World Wide Web. ... ActionScript is a scripting language based on ECMAScript, used primarily for the development of websites and software using the Adobe Flash Player platform (in the form of SWF files embedded into Web pages). ... Real Time Messaging Protocol (RTMP) is a proprietary protocol developed by Adobe Systems (formerly developed by Macromedia) that is primarily used with Macromedia Flash Media Server to stream audio and video over the internet to the Adobe Flash Player client. ... Google Video logo Google Video is a free video sharing and video search engine service from Google that allows anyone to upload video clips to Googles web servers as well as make their own media available free of charge; some videos are also offered for sale through the Google... YouTube is a popular video sharing website where users can upload, view and share video clips. ... Real Time Messaging Protocol (RTMP) is a proprietary protocol developed by Adobe Systems (formerly developed by Macromedia) that is primarily used with Macromedia Flash Media Server to stream audio and video over the internet to the Adobe Flash Player client. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... Stream recorder, also called a stream ripper, is a computer program capable of saving data stream (containing for instance encoded music or video from a radio or a TV channel respectively) to a file instead of playing it straightaway. ... A codec is a device or program capable of encoding and/or decoding a digital data stream or signal. ... A screencast is a digital recording of computer screen output, often containing audio narration. ...

Notes

  1. ^ What just happened to video on the web. Adobe.
  2. ^ Adobe Flash Player 9 Downloads. Adobe (3 December 2007). Retrieved on 2008-01-31.
  3. ^ FFmpeg Documentation

2008 (MMVIII) is the current year, a leap year that started on Tuesday of the Anno Domini (or common era), in accordance with the Gregorian calendar. ... is the 31st day of the year in the Gregorian calendar. ...

External links

Look up Multimedia in Wiktionary, the free dictionary. ... Source coding redirects here. ... Video compression refers to making a digital video signal use less data, without noticeably reducing the quality of the picture. ... “ISO” redirects here. ... The International Electrotechnical Commission (IEC) is an international standards organization dealing with electrical, electronic and related technologies. ... Motion JPEG, also known as M-JPEG, is a video file format consisting of a sequence of individual JPEG images; unlike other video compression algorithms, each frame is an image unto itself. ... JPEG 2000 is a wavelet-based image compression standard. ... MPEG-1 was an early standard for lossy compression of video and audio. ... MPEG-2 is a standard for the generic coding of moving pictures and associated audio information [1]. It is widely used around the world to specify the format of the digital television signals that are broadcast by terrestrial (over-the-air), cable, and direct broadcast satellite TV systems. ... MPEG-4 Part 2 is a video compression technology developed by MPEG. It belongs to the MPEG-4 ISO/IEC standard (ISO/IEC 14496-2). ... H.264 is a standard for video compression. ... The ITU Telecommunication Standardization Sector (ITU-T) coordinates standards for telecommunications on behalf of the International Telecommunication Union (ITU) and is based in Geneva, Switzerland. ... H.261 is an 1990 ITU video coding standard originally designed for transmission over ISDN lines on which data rates are multiples of 64 kbit/s. ... H.262 is an ITU-T digital video coding standard. ... H.263 is a video codec designed by the ITU-T as a low-bitrate encoding solution for videoconferencing. ... H.264 is a standard for video compression. ... This article or section does not cite its references or sources. ... Audio Video Standard, or AVS, is a compression codec for digital audio and video, and a possible alternative to H.264/AAC/Vorbis [1], meant to potentially replace MPEG-2. ... Bink is a video file format (extension . ... Dirac is a prototype algorithm for the encoding and decoding (see codec) of raw video. ... Indeo Video (commonly known now simply as Indeo) is a video codec developed by Intel in 1992. ... Pixlet is a video codec created by Apple Computer and based on wavelets, designed to enable viewing of full resolution, high resolution movies in real time at low DV data rates. ... RealVideo is a proprietary video format developed by RealNetworks. ... RTVideo RTVideo is Microsofts default video codec for OCS. RTVideo is a proprietrary codec. ... SheerVideo is a fast lossless video codec created by BitJazz Inc. ... Smacker video is a video file format (with the file extension) developed by RAD Game Tools and oftenly used in computer games. ... Snow is an experimental video codec developed by Michael Niedermayer for the FFmpeg package. ... Theora is a video codec being developed by the Xiph. ... VC-1 is the informal name of the SMPTE 421M video codec standard initially developed by Microsoft. ... TrueMotion VP6 is a video codec developed by On2 Technologies as a successor to earlier efforts such as VP3 and VP5. ... TrueMotion VP7 is a video codec developed by On2 Technologies as a successor to earlier efforts such as VP3, VP5 and TrueMotion VP6. ... Windows Media Video (WMV) is a generic name for the set of video codec technologies developed by Microsoft. ... This article is about a process which reduces the data rate or file size of digital audio signals. ... “ISO” redirects here. ... The International Electrotechnical Commission (IEC) is an international standards organization dealing with electrical, electronic and related technologies. ... For other uses, see MP3 (disambiguation). ... MPEG-1 Audio Layer II (MP2, sometimes Musicam) is an audio codec defined by ISO/IEC 11172-3. ... MPEG-1 Audio Layer I, commonly abbreviated to MP1, is one of three audio codecs included in the MPEG-1 standard. ... Advanced Audio Coding (AAC) is a standardized, lossy compression and encoding scheme for digital audio. ... High Efficiency AAC (HE-AAC) is a lossy data compression scheme for digital audio. ... High Efficiency AAC (HE-AAC) is a lossy data compression scheme for digital audio. ... The ITU Telecommunication Standardization Sector (ITU-T) coordinates standards for telecommunications on behalf of the International Telecommunication Union (ITU) and is based in Geneva, Switzerland. ... G.711 is an ITU-T standard for audio companding. ... G.722[1] is a ITU-T standard wideband speech codec operating at 48-64 kbit/s. ... G.722. ... Adaptive Multi Rate - WideBand or AMR-WB is a speech coding standard developed after the AMR using same technology like ACELP. The codec provides excellent speech quality due to wider speech bandwidth of 50 - 7000 Hz compared to narrowband speech codecs which in general are optimized for POTS wireline quality... This article is in need of attention from an expert on the subject. ... G.723. ... G.726 is ITU-T speech codec operating at bit rates of 16-40 kbit/s. ... G.728 is a ITU-T standard for speech coding operating at 16 kbit/s. ... G.729 is an audio data compression algorithm for voice that compresses voice audio in chunks of 10 milliseconds. ... The introduction to this article provides insufficient context for those unfamiliar with the subject matter. ... G.729 is an audio data compression algorithm for voice that compresses voice audio in chunks of 10 milliseconds. ... Dolby Digital is the marketing name for a series of lossy audio compression technologies by Dolby Laboratories. ... Adaptive Multi-Rate (AMR) is an audio data compression scheme optimized for speech coding. ... Apple Lossless (also known as Apple Lossless Encoder, ALE, or Apple Lossless Audio Codec, ALAC) is an audio codec developed by Apple Inc. ... Adaptive Transform Acoustic Coding (ATRAC) is a family of proprietary audio compression algorithms developed by Sony. ... Free Lossless Audio Codec (FLAC) is a popular file format for audio data compression. ... internet Low Bit Rate Codec (iLBC) is a royalty free narrowband speech codec, developed by Global IP Sound (GIPS). ... Monkey’s Audio is a file format for audio data compression. ... In telecommunication, a mu-law algorithm (μ-law) is a standard analog signal compression or companding algorithm, used in digital communications systems of the North American and Japanese digital hierarchies, to optimize (in other words, modify) the dynamic range of an audio analog signal prior to digitizing. ... 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. ... The Nellymoser Asao codec is a proprietary single-channel (mono) format optimized for low-bitrate transmission of audio. ... Please wikify (format) this article as suggested in the Guide to layout and the Manual of Style. ... RealAudio is a proprietary audio format developed by RealNetworks. ... RTAudio is a Microsoft produced adaptive wide-band speech codec. ... SHN (Shorten) is a file format used to losslessly compress CD-quality audio files (44. ... Speex is a free software speech codec that may be used on VoIP applications and podcasts. ... Vorbis is an open source, lossy audio codec project headed by the Xiph. ... WavPack is a free, open source lossless audio compression format developed by David Bryant. ... Windows Media Audio (WMA) is an audio data compression technology developed by Microsoft. ... TAK (Toms lossless Audio Kompressor) is a lossless audio compressor which promises compression performance similar to Monkeys Audio “High” and decompression speed similar to FLAC. The codec also supports streaming (necessary headers for decompressing the audio are written to the stream every 2 seconds), error tolerance (single bit... Image compression is the application of Data compression on digital images. ... “ISO” redirects here. ... The International Electrotechnical Commission (IEC) is an international standards organization dealing with electrical, electronic and related technologies. ... The ITU Telecommunication Standardization Sector (ITU-T) coordinates standards for telecommunications on behalf of the International Telecommunication Union (ITU) and is based in Geneva, Switzerland. ... JPG redirects here. ... JPEG 2000 is a wavelet-based image compression standard. ... The Joint Photographic Experts Group, in addition to their well-known lossy image compression techniques, JPEG and JPEG 2000, also have three standards for lossless compression (of which JPEG-LS has a lossy mode): Lossless JPEG was developed as a late addition to JPEG in 1993, using a completely different... JBIG is a lossless image compression standard from the Joint Bi-level Image Experts Group, standardized as ISO/IEC standard 11544 and as ITU-T recommendation T.82. ... JBIG2 is an image compression standard for bi-level images, developed by the Joint Bi-level Image Experts Group. ... PNG (Portable Network Graphics), sometimes pronounced as ping, is a relatively new bitmap image format that is becoming popular on the World Wide Web and elsewhere. ... Wireless Application Protocol Bitmap Format (shortened to Wireless Bitmap and with file extension . ... The BMP file format, sometimes called bitmap or DIB file format (for device-independent bitmap), is an image file format used to store bitmap digital images, especially on Microsoft Windows and OS/2 operating systems. ... GIF redirects here. ... ICER is a wavelet-based image compression file format used by the NASA Mars Rovers. ... ILBM is a subtype of the Interchange File Format used for storing picture data. ... PCX is an image file format that uses a simple form of run-length encoding (a type of lossless compression algorithm). ... PGF (Progressive Graphics File) is a wavelet-based bitmapped image format that employs lossless and lossy data compression. ... Truevisions (now Pinnacle Systems) TGA File Format, often referred to as TARGA File Format, is a raster graphics file format. ... “TIFF” redirects here. ... JPEG XR (formerly HD Photo and Windows Media Photo) is a still-image compression algorithm and file format for continuous tone photographic images, developed by Microsoft as a part of the Windows Media family. ... A container format is a computer file format that can contain various types of data, compressed by means of standardized codecs. ... 3GP is a multimedia container format defined by the Third Generation Partnership Project (3GPP) for use on 3G mobile phones. ... Advanced Systems Format (formerly Advanced Streaming Format, Active Streaming Format) is Microsofts proprietary digital audio/digital video container format, especially meant for streaming media. ... AVI redirects here. ... Bink is a video file format (extension . ... DivX is a video codec created by DivX, Inc. ... DPX is also the name given to a mounting medium, see Di-n-butylPhthalate in Xylene. ... The Matroska Multimedia Container is an open standard free Container format, a file format that can hold an unlimited number of video, audio, picture or subtitle tracks inside a single file. ... For other parts of the MPEG-4 standard, see MPEG-4. ... Material eXchange Format (MXF) is a container format for professional digital video and audio media defined by a set of SMPTE standards. ... NUT is a patent-free, multimedia container format originally conceived by a few MPlayer and FFmpeg developers that were dissatisfied with the limitations of all currently available multimedia container formats such as AVI or Matroska. ... Ogg is an open standard for a free container format for digital multimedia, unrestricted by software patents and designed for efficient streaming and manipulation. ... Ogg Media (OGM), meaning Ogg Media File, is a container format (for video, audio and subtitle streams). ... QuickTime is a multimedia framework developed by Apple Inc. ... RealMedia is a multimedia container format created by RealNetworks. ... Smacker video is a video file format (with the file extension) developed by RAD Game Tools and oftenly used in computer games. ... The Resource Interchange File Format (RIFF) is a generic meta-format for storing data in tagged chunks. ... For Versioned Object Bases, see Rational ClearCase. ... Audio Interchange File Format (AIFF) is an audio file format standard used for storing sound data for personal computers and other electronic audio devices. ... The Au file format is a simple audio file format that consists of a header of 6 32-bit words and then the data (high-order byte comes first). ... WAV (or WAVE), short for Waveform audio format, is a Microsoft and IBM audio file format standard for storing audio on PCs. ...

 
 

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