NationMaster - Encyclopedia: FLV

FLV (Flash Video) is a proprietary 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. FLV content may also be embedded within SWF files. Notable users of the FLV format include YouTube, Google Video, Reuters.com, Yahoo! Video and MySpace. Image File history File links FlashVideo. ... A filename extension is a suffix to the name of a computer file applied to show its format. ... Multipurpose Internet Mail Extensions (MIME) is an Internet Standard that extends the format of e-mail to support text in character sets other than US-ASCII, non-text attachments, multi-part message bodies, and header information in non-ASCII character sets. ... This article or section does not adequately cite its references or sources. ... Macromedia was an American graphics and web development software house headquartered in San Francisco, California. ... 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. ... The Adobe Flush Player is a widely distributed multimedia and application player created and distributed by Macromedia (a division of Adobe Systems). ... SWF is a proprietary vector graphics file format produced by the Flash software from Adobe (formerly Macromedia). ... YouTube is a popular free video sharing website which lets users upload, view, and share video clips. ... Google Video is a free Google service that allows anyone to upload video clips to Googles web servers as well as make their own media available free of charge or through Google Video Store for a cost that they can set. ... Reuters Group plc (LSE: RTR and NASDAQ: RTRSY); pron. ... 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. ... MySpace is a social networking website offering an interactive, user-submitted network of friends, personal profiles, blogs, groups, photos, music, and videos. ...

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, 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 (Internet Explorer), displaying the English Wikipedia main page. ... A plugin (plug-in, addin, add-in, addon or add-on) is a computer program that interacts with a main (or host) application (a web browser or an email program, for example) to provide a certain, usually very specific, function on demand. ... This article is about the open source media player. ... The VLC media player is a free software media player, distributed under the GNU General Public License. ... 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 images on personal computers running the Microsoft Windows operating system, as well as on Pocket PC and Windows Mobile-based devices. ... Windows Media Center on Windows Vista build 5536 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. ...

Flash Player

The Adobe Flash Player is a multimedia and application player created and distributed 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 Adobe Flush Player is a widely distributed multimedia and application player created and distributed by Macromedia (a division of Adobe Systems). ... This article or section does not adequately cite its references or sources. ... SWF is a proprietary vector graphics file format produced by the Flash software from Adobe (formerly Macromedia). ... It has been suggested that FutureSplash Animator be merged into this article or section. ... Adobe Flex is an umbrella term for a group of technologies initially released in March of 2004 by Macromedia to support the development and deployment of rich Internet applications based on their proprietary Macromedia Flash platform. ... This article or section does not adequately cite its references or sources. ... ActionScript is a scripting language based on ECMAScript, primarily used to develop software for the Adobe Flash . ... An example of a web browser (Internet Explorer), displaying the English Wikipedia main page. ... 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. ...

Video format

Commonly FLV 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. 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. ...

An optional alpha channel which represents per pixel transparency is supported by including a second simultaneous video stream which encodes the alpha channel only, dropping any chromatic information. The implementation makes the assumption that the YUV data of the main On2 VP6 video stream is always converted to RGB by the client before compositing occurs as the resulting RGB values are alpha premultiplied and clamped accordingly. This option is only available for On2 VP6 encoded video streams. Chrominance (chroma for short) comprises the two components of a television signal that encode color information. ... Example of U-V color plane, Y value = 0. ... The RGB color model utilizes the additive model in which red, green, and blue light are combined in various ways to create other colors. ... In computer graphics, alpha compositing is often useful to render image elements in separate passes, and then combine the resulting multiple 2D images into a single, final image in a process called compositing. ... In computer graphics, alpha compositing is the process of combining an image with a background to create the appearance of partial transparency. ...

The FLV 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 FLV 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. // == Macromedia Flash == ==]] Using Macromedia Flash 8 (bundled in Studio 8) in Windows XP. Maintainer: Adobe Systems (formerly Macromedia) Latest release: 8 / September 30th, 2005 OS: Windows (no native Windows XP Professional x64 Edition support), Mac OS X, Linux (i386 only, via wine [1]) Use: Multimedia Content Creator License: Proprietary Website... 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 free software that can record, convert and stream digital audio and video. ...

Audio format

Audio in FLV files is usually encoded as MP3. However, FLV files recorded from the user's microphone use the proprietary Nellymoser codec. There is currently no open source product available that can decode the nellymoser codec. FLV files also support uncompressed audio or ADPCM format audio. A portable MP3 player MPEG-1 Audio Layer 3, more commonly referred to as MP3, is a popular digital audio encoding, lossy compression format, and algorithm, designed to greatly reduce the amount of data required to represent audio, yet still sound like a faithful reproduction of the original uncompressed audio... This is a single-channel (mono) format optimized for low-bitrate transmission of speech. ... Pulse-code modulation (PCM) is a modulation technique. ...

FLV Players

There are currently few players able to play the FLV format. Some available players include:

BitComet is a BitTorrent client written in C++ for Microsoft Windows. ... There are very few or no other articles that link to this one. ... This article is about the open source media player. ... Perian, advertised as a swiss-army knife for QuickTime, is a plug-in which enables QuickTime to play several popular video formats not supported natively by QuickTime on Mac OS X[1]. It has been featured as the Download of the Day on Lifehacker[2], as well as on several... The VLC media player is a free software media player, distributed under the GNU General Public License. ... The correct title of this article is . ... 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. ... 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 images on personal computers running the Microsoft Windows operating system, as well as on Pocket PC and Windows Mobile-based devices. ... Windows Media Center on Windows Vista build 5536 Windows Media Center is an application designed to serve as a home-entertainment hub. ...

Delivery options

HTTP (for HyperText Transfer Protocol) is the primary method used to convey information on the World Wide Web. ... ActionScript is an ECMAScript-based programming language used for controlling Macromedia Flash movies and applications. ... Google Video is a free Google service that allows anyone to upload video clips to Googles web servers as well as make their own media available free of charge or through Google Video Store for a cost that they can set. ... YouTube is a popular free video sharing website which lets users 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 performing encoding and decoding on a digital data stream or signal. ... A screencast is a digital recording of computer screen output, often containing audio narration. ...

External links

Categories: Adobe Flash | Container formats It has been suggested that FutureSplash Animator be merged into this article or section. ... SWF is a proprietary vector graphics file format produced by the Flash software from Adobe (formerly Macromedia). ... ActionScript is a scripting language based on ECMAScript, primarily used to develop software for the Adobe Flash . ... FutureSplash Animator was a software product for creating vector-based animations. ... Adobe Flash Lite is a lightweight version of Adobe Flash Player optimized for mobile phones and other devices. ... ActionScript is a scripting language based on ECMAScript, primarily used to develop software for the Adobe Flash . ... The Adobe Flush Player is a widely distributed multimedia and application player created and distributed by Macromedia (a division of Adobe Systems). ... Local Shared Object (LSO) is a cookie-like data entity used by Adobe Flash Player. ... A Flash animation or Flash cartoon is an animated film which is created using Macromedia Flash animation software and often distributed in the . ... This article or section does not cite its references or sources. ... In computer science and information theory, data compression or source coding is the process of encoding information using fewer bits (or other information-bearing units) than an unencoded representation would use through use of specific encoding schemes. ... Video compression refers to making a digital video signal use less data, without noticeably reducing the quality of the picture. ... The International Organization for Standardization (ISO) is an international standard-setting body composed of representatives from national standards bodies. ... The International Electrotechnical Commission (IEC) is an international standards organization dealing with electrical, electronic and related technologies. ... MPEG-1 defines a group of Audio and Video (AV) coding and compression standards agreed upon by MPEG (Moving Picture Experts Group). ... 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, MPEG-4 Part 10, or AVC (for Advanced Video Coding), is a digital video codec standard that is noted for achieving very high data 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, MPEG-4 Part 10, or AVC (for Advanced Video Coding), is a digital video codec standard that is noted for achieving very high data compression. ... The Peoples Republic of China government is supporting an effort to develop own standard for compressing digital audio and video, to assert its technological independence from the rest of the world. ... 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. ... Motion JPEG (M-JPEG) is an informal name for multimedia formats where each video frame or interlaced field of a digital video sequence is separately compressed as a JPEG image. ... RealVideo is a proprietary video format developed by RealNetworks. ... Theora is a video codec being developed by the Xiph. ... VC-1 is the informal name of the SMPTE 421M video codec standard. ... 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. ... Audio compression is a form of data compression designed to reduce the size of audio files. ... The International Organization for Standardization (ISO) is an international standard-setting body composed of representatives from national standards bodies. ... The International Electrotechnical Commission (IEC) is an international standards organization dealing with electrical, electronic and related technologies. ... The Moving Picture Experts Group or MPEG is a working group of ISO/IEC charged with the development of video and audio encoding standards. ... A portable MP3 player MPEG-1 Audio Layer 3, more commonly referred to as MP3, is a popular digital audio encoding, lossy compression format, and algorithm, designed to greatly reduce the amount of data required to represent audio, yet still sound like a faithful reproduction of the original uncompressed audio... MPEG-1 Audio Layer II (MP2, sometimes Musicam) is an audio codec defined by ISO/IEC 11172-3. ... Advanced Audio Coding (AAC) is a standardized, lossy compression and encoding scheme for digital audio. ... An extension of Advanced Audio Coding (AAC) audio coding scheme targetted at low bitrates. ... 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 is a ITU-T standard wideband speech codec operating at 32-64 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 logotype Dolby Digital is the marketing name for a series of lossy audio compression technologies by Dolby Laboratories. ... 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). ... Monkeyâ€™s Audio is a lossless audio compression codec. ... In telecommunication, a mu-law algorithm (Î¼-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. ... This is a single-channel (mono) format optimized for low-bitrate transmission of speech. ... RealAudio is a proprietary audio format developed by RealNetworks. ... SHN (Shorten) is a file format used to losslessly compress CD-quality audio files (44. ... Speex is a free software speech codec that claims to be unencumbered by patent restrictions. ... 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 a proprietary compressed audio file format developed by Microsoft. ... Image compression is the application of data compression on digital images. ... The International Organization for Standardization (ISO) is an international standard-setting body composed of representatives from national standards bodies. ... 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. ... In computing, JPEG (pronounced JAY-peg; IPA: ) is a commonly used standard method of compression for photographic images. ... 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) is a bitmapped image format that employs lossless data compression. ... Wireless Application Protocol Bitmap Format (shortened to Wireless Bitmap and with file extension . ... The APNG (Animated Portable Network Graphics) file format is a proposed extension to the portable network graphics (PNG) specification that would allow for animated PNG files that work in a similar fashion to animated graphics interchange format (GIF) files, while retaining the backward compatibility with non-animated PNG files. ... ICER is a wavelet-based image compression file format used by the NASA Mars Rovers. ... Multiple-image Network Graphics (MNG) (IPA pronunciation: ) is a public graphics file format for animated images. ... DIB redirects here. ... An example of a GIF image. ... 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). ... Truevisions TGA File Format, often referred to as TARGA File Format, is a raster graphics file format. ... â€œTIFFâ€ redirects here. ... HD Photo (formerly 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) is Microsofts proprietary digital audio/digital video container format, especially meant for streaming media. ... Audio Video Interleave, known by its acronym AVI, is a multimedia container format introduced by Microsoft in November 1992 as part of the Video for Windows technology. ... DivX is a video codec created by DivX, Inc. ... DPX, the short form of Digital Picture Exchange, is a common file format for digital film work and is an ANSI/SMPTE standard (268M-2003). ... Matroska (common file extensions being . ... MPEG-4 Part 14, formally ISO/IEC 14496-14:2003, is a multimedia container format standard specified as a part of 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. ... Look up Ogg in Wiktionary, the free dictionary. ... 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. ... A VOB file (DVD-Video Object or Versioned Object Base) is a container format contained in DVD-Video media. ... Audio Interchange File Format (AIFF) is an audio file format standard used for storing sound data on personal computers. ... 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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