NationMaster - Encyclopedia: MJPEG

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. Unlike the video formats specified in international standards such as MPEG-2 and the format specified in the JPEG still-picture coding standard, there is no document that defines a single exact format that is universally recognized as a complete specification of "Motion JPEG" for use in all contexts. Interlace is a technique of improving the picture quality of a video transmission without consuming any extra bandwidth. ... Digital video is a type of video recording system that works by using a digital, rather than analog, representation of the video signal. ... Categories: Disambiguation | Software stubs | Data compression software ... In computing, JPEG(pronounced JAY-peg; IPA: ) is a commonly used standard method of compression for photographic images and not for movie files for which MPEG compression is used. ... For images in Wikipedia, see Wikipedia:Images. ... Standards are produced by many organizations, some for internal usage only, others for use by a groups of people, groups of companies, or a subsection of an industry. ... MPEG-2 is the designation for a group of coding and compression standards for Audio and Video (AV), agreed upon by MPEG (Moving Picture Experts Group), and published as the ISO/IEC 13818 international standard. ...

Motion JPEG uses intraframe coding technology that is very similar in technology to the I-frame part of video coding standards such as MPEG-1 and MPEG-2, but does not use interframe prediction. The lack of use of interframe prediction results in a loss of compression capability, but eases video editing, since simple edits can be performed at any frame when all frames are I-frames. Video coding formats such as MPEG-2 can also be used in such an I-frame only fashion to provide similar compression capability and similar ease of editing features. B pictures (often called B frames) are one of the three major picture types found in typical video compression designs. ... 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 the designation for a group of coding and compression standards for Audio and Video (AV), agreed upon by MPEG (Moving Picture Experts Group), and published as the ISO/IEC 13818 international standard. ... The introduction to this article provides insufficient context for those unfamiliar with the subject matter. ... MPEG-2 is the designation for a group of coding and compression standards for Audio and Video (AV), agreed upon by MPEG (Moving Picture Experts Group), and published as the ISO/IEC 13818 international standard. ...

Using only intraframe coding technology also makes the degree of compression capability independent of the amount of motion in the scene, since temporal prediction is not being used. (Using temporal prediction can ordinarily substantially improve video compression capability, but makes the compression performance dependent on how well the motion compensation performs for the scene content.) The introduction to this article provides insufficient context for those unfamiliar with the subject matter. ...

M-JPEG is frequently used in non-linear video editing systems. Reproduction of this format at full speed requires fast JPEG decoding capability. Note: Please see National Latin Examination for the standardized test that is also abbreviated NLE. A non-linear editing system (abbreviated NLE) is a video editing or audio editing system that can perform random access on the source material. ...

M-JPEG is also commonly used by IP based video cameras via HTTP streams by using the multipart/x-mixed-replace content type. This separates each image into individual HTTP replies on an agreed^{[citation needed]} marker. Mozilla based browsers like Netscape and Firefox have native support for viewing these streams whereas Internet Explorer does not. The Internet Protocol (IP) is a data-oriented protocol used for communicating data across a packet-switched internetwork. ... Eric Harris and Dylan Klebold, in the Columbine High School Massacre. ... HTTP (for HyperText Transfer Protocol) is the primary method used to convey information on the World Wide Web. ... Streaming media is media that is consumed (heard or viewed) (mostly in the form of clips) while it is being delivered. ... Multipurpose Internet Mail Extensions (MIME) is an Internet Standard for the format of e-mail. ... Mozilla logo Mozilla Firefox is a computer term that has had many different uses, though all of them have been related to Netscape Communications Corporation and its related application software. ... Netscape Navigator, also known as Netscape, was a proprietary web browser that was popular during the 1990s. ... Mozilla Firefox is a free, open source, cross-platform, graphical web browser developed by the Mozilla Corporation and hundreds of volunteers. ... To meet Wikipedias quality standards, this article or section may require cleanup. ...

The PlayStation game console has integrated M-JPEG decompression hardware in order to play in-game FMV sequences. The SanDisk Sansa digital audio player plays short M-JPEG videos. For other versions of PlayStation, please see PlayStation (disambiguation) The PlayStation (Japanese: ãƒ—ãƒ¬ã‚¤ã‚¹ãƒ†ãƒ¼ã‚·ãƒ§ãƒ³) is a rubbish game console of the 32/64-bit era, first produced by Sony Computer Entertainment in the mid-1990s. ... Screenshot of an FMV from Final Fantasy VIII. Full motion video, usually abbreviated as FMV, is a popular term for TV-quality movie or animation in a video game. ... The SanDisk Sansa is a line of flash memory based digital audio players produced by SanDisk. ...

The bitrate falls between uncompressed formats (like RGB, compression 1:1, and YCbCr, compression 1:1.5 to 1:2.5) and MPEG (1:100) Data rates in the range of 29 Mbit/s are very high quality, but also result in comparatively large file sizes. 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. ... The RGB color model utilizes the additive model in which red, green, and blue light are combined in various ways to create other colors. ... YCbCr is a family of colour spaces used in video systems. ...

Prior to the recent rise in MPEG-4 encoding in consumer devices, a progressive scan form of MJPEG also saw widespread use in e.g. the "movie" modes of Digital Still Cameras, allowing video encoding and playback through the integrated JPEG compression hardware with only a software modification. Again, the resultant quality is markedly reduced compared to MPEG compression at a similar bitrate, particularly as sound (when included) was often uncompressed PCM or low-compression (and low processor-demand) ADPCM. To compensate and keep file sizes / transfer rates under control, frame sizes and rates, along with sound sampling rates, were kept relatively low, with very high levels of compression for each individual frame; e.g. 160x120 or 320x240 common sizes, typically at 10, 12 or 15 frames/second, with picture quality equivalent to a JPEG setting of "50" (harsher compression than used commercially in typical digital stills) and 8khz mono ADPCM sound. This resulted in a very basic, but still servicable video output at a similar storage cost to MPEG (~120kbyte/sec video rate, ~8kbyte/sec audio - or approx 1mbit/sec at "high" 320x240 resolution), but with minimal processing overheads. This user generated content was typically stored in the popular Windows AVI or Apple Quicktime MOV container files, generally viewable natively (or after installation of a simple CODEC driver) in most versions of the applicable operating system. MPEG-4 is a standard used primarily to compress audio and video (AV) digital data. ...

Since the development of the original JPEG standard in the early 1990s, technology improvements have made improvements in intraframe compression possible. The JPEG organization itself has developed a new design called JPEG 2000, and other types of such technology improvements can be found in the designs of H.263v2 Annex I and MPEG-4 Part 2, which use frequency-domain prediction of transform coefficient values, and in H.264/MPEG-4 AVC, which uses spatial prediction and adaptive transform block size techniques and more sophisticated entropy coding than what was practical when the first JPEG design was developed. In computing, JPEG(pronounced JAY-peg; IPA: ) is a commonly used standard method of compression for photographic images and not for movie files for which MPEG compression is used. ... JPEG 2000 is a wavelet-based image compression standard. ... H.263. ... 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 which is noted for achieving very high data compression. ...

See also

Huffyuv (or HuffYUV) is a very fast, lossless Win32 video codec written by Ben Rudiak-Gould, meant to replace uncompressed YUV as a video capture format. ...

Categories: Articles with unsourced statements | Video codecs This article or section does not cite its references or sources. ... Bold text Wiktionary has related dictionary definitions, such as: compressor, compression inthe wkjhrlfidhb;g/df == Compressor may refer to: Gas compressor, a mechanical device that compresses a gas e. ... Format has several meanings; did you mean: Disk formatting — the process of preparing a disk for use File format — various ways information is encoded in computing Format — a command in the Common Lisp programming language Radio format — the musical style and programming philosophy of a radio... Video compression refers to making a digital video signal use less data, without noticeably reducing the quality of the picture. ... ISO has many meanings: Iso is the stem of the Latin transliteration of the Greek word Î¯ÏƒÎ¿Ï‚ (Ãsos, meaning equal). The iso- prefix in English derives from this and means equality or similarity. ... 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 the designation for a group of coding and compression standards for Audio and Video (AV), agreed upon by MPEG (Moving Picture Experts Group), and published as the ISO/IEC 13818 international standard. ... MPEG-4 is a standard used primarily to compress audio and video (AV) digital data. ... H.264, MPEG-4 Part 10, or AVC, for Advanced Video Coding, is a digital video codec standard which 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 which is noted for achieving very high data compression. ... The Society of Motion Picture and Television Engineers or SMPTE (pronounced simptee or sometimes sumptee) is a US professional association of engineers. ... VC-1 is the informal name of the SMPTE 421M video codec standard. ... TrueMotion VP7 is a video codec developed by On2 Technologies as a successor to earlier efforts such as VP3, VP5 and TrueMotion VP6. ... RealVideo is a proprietary video format developed by RealNetworks. ... Windows Media Video (WMV) is a generic name for the set of video codec technologies developed by Microsoft. ... Indeo Video (commonly known now simply as Indeo) is a video codec developed by Intel in 1992. ... Theora is a video codec being developed by the Xiph. ... Dirac is a prototype algorithm for the encoding and decoding (see codec) of raw video. ... Audio compression is a form of data compression designed to reduce the size of audio data files. ... ISO has many meanings: Iso is the stem of the Latin transliteration of the Greek word Î¯ÏƒÎ¿Ï‚ (Ãsos, meaning equal). The iso- prefix in English derives from this and means equality or similarity. ... 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. ... MPEG-1 Audio Layer 3, more commonly referred to as MP3, is a popular digital audio encoding and lossy compression format, designed to greatly reduce the amount of data required to represent audio, yet still sound like a faithful reproduction of the original uncompressed audio to most listeners. ... MPEG-1 Audio Layer II (MP2, sometimes Musicam) is an audio codec defined by ISO/IEC 11172-3. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... MPEG-4 Part 3 (formally ISO/IEC 14496-3) is, as the name suggests, the third part of the ISO/IEC MPEG-4 international standard. ... 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 From Wikipedia, the free encyclopedia You have new messages (changes). ... G.729 is an audio data compression algorithm for voice that compresses voice audio in chunks of 10 milliseconds. ... WavPack is a free, open source lossless audio compression format developed by David Bryant. ... FLAC, an acronym for Free Lossless Audio Codec, is a popular file format for audio data compression. ... The Internet Low Bit Rate Codec (iLBC) is a royalty free narrowband speech codec, developed by Global IP Sound (GIPS). ... RealAudio is a proprietary audio format developed by RealNetworks. ... Windows Media Audio (WMA) is a proprietary compressed audio file format developed by Microsoft. ... 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. ... 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. ... Vorbis is an open and free lossy audio compression codec project headed by the Xiph. ... ATRAC (Adaptive TRansform Acoustic Coding) is a proprietary audio compression algorithm used to store information on Minidiscs and other Sony-branded audio players. ... Dolby Digital is the marketing name for a series of lossy audio compression technologies by Dolby Laboratories. ... Image compression is the application of data compression on digital images. ... ISO has many meanings: Iso is the stem of the Latin transliteration of the Greek word Î¯ÏƒÎ¿Ï‚ (Ãsos, meaning equal). The iso- prefix in English derives from this and means equality or similarity. ... 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 and not for movie files for which MPEG compression is used. ... JPEG 2000 is a wavelet-based image compression standard. ... faldfjajsldfkja;sdfkja;dkjfasdf;j ... 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. ... An example of a GIF image. ... A PNG image with an 8-bit transparency channel (top). ... Tagged Image File Format (abbreviated TIFF) is a file format for mainly storing images, including photographs and line art. ... 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. ... // Bitmap File Overview . ... Windows Media Photo (WMPhoto), a part of the Windows Media family, is a high compression still image format for continuous tone photographic images, developed by Andrew Gordon of Microsoft. ... ILBM is a subtype of the Interchange File Format used for storing picture data. ... A container format is a computer file format that can contain various types of data, compressed by means of standardized codecs. ... 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). ... Audio Interchange File Format (AIFF) is an audio file format standard used for storing sound data on personal computers. ... WAV (or WAVE), short for Waveform audio format, is a Microsoft and IBM audio file format standard for storing audio on PCs. ... 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. ... Material eXchange Format (MXF) is a container format for professional digital video and audio media defined by a set of SMPTE standards. ... Matroska (common file extensions being . ... OGG can refer to several items: Ogg is a multimedia bitstream container, used for audio and video files, especially Vorbis audio files. ... Ogg Media (OGM), meaning Ogg Media File, is a container format (for video, audio and subtitle streams). ... MPEG-4 Part 14, formally, ISO/IEC 14496-14:2003, is a multimedia container format standard specified as a part of MPEG-4. ... QuickTime is a multimedia framework developed by Apple Computer, capable of handling various formats of digital video, media clips, sound, text, animation, music, and several types of interactive panoramic images. ... RealMedia is a multimedia container format created by RealNetworks. ... 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. ... Advanced Systems Format (formerly Advanced Streaming Format) is Microsofts proprietary digital audio/digital video container format, especially meant for streaming media. ... 3GP Stands for Third Generation Partnership Project sometimes called 3GPP it is a multimedia container format defined by 3GPP for use on 3G mobile phones. ...

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