MPEG-4 Part 2 is a video compression technology developed by The Moving Picture Experts Group (MPEG) is a small group charged with the development of video and audio encoding standards. Since its first meeting in 1988, MPEG has grown to include approximately 350 members from various industries and universities. MPEGs official designation is ISO/IEC JTC1/SC29 WG11. MPEG... MPEG. It belongs to the MPEG-4, introduced in 1998, is the designation for a group of audio and video coding standards agreed upon by the Moving Picture Experts Group (MPEG). MPEG-4 is primarily designed to handle low bit rate content, from 4,800 bit/s to approximately 4 Mbit/s. The primary uses... MPEG-4 Iso (iso-) is a prefix indicating similarity or equality. It comes from the Greek ίσος, meaning equal. Examples of words using iso : Isotherm (line of equal temperature) Isobar (line of equal pressure) Isocline (line of equal magnetic declination in the earths magnetic field) Isohyet Isohypse... ISO/ The initials IEC can stand for: Independent Electoral Commission Industrial Emergency Council Institut des Experts-comptables et des Conseils fiscaux Institut dEstudis Catalans, Catalan Studies Institute Interactive Evolutionary Computation International Education Centre International Electrical Congress International Electrotechnical Commission See also IEC connector for IEC cord International Engineering Consortium International... IEC standard. Like the Audio part for MPEG-4, the video part is divided into several profiles that are aimed for use in several different standards.

Simple Profile

Simple Profile is mostly aimed for use in cell phones and other technical devices that that can't handle features in MPEG-4 that requires a lot of The central processing unit (CPU) is the part of a computer that interprets and carries out the instructions contained in the software. Overview This CPU uses numerous pins to connect to the motherboard. Most CPUs divide the tasks of interpreting and carrying out the instructions between: A control unit that... CPU power. For instance, old computers.

Advanced Simple Profile

Advanced Simple Profile (ASP) is a "profile" defined in the digital compression Codec is a portmanteau of coder/decoder, which describes a device or program capable of performing transformations on a data stream or signal. Codecs can both put the stream or signal into an encoded form (often for transmission, storage or encryption) and retrieve, or decode that form for viewing or... codec standard MPEG-4 Part 2 (Visual). It is used for video compression in numerous products like XviD is a GPL open source MPEG-4 video codec. Originally based on OpenDivX, XviD was started by a group of volunteer programmers after the OpenDivX source was closed. XviD features MPEG-4 Advanced Simple Profile features such as b-frames, quarter pixel motion compensation, global motion compensation, lumi masking... XviD, DivX® is a video codec created at DivXNetworks Inc., known for its ability to compress lengthy video segments into small sizes and has been the center of controversy because of its use in the replication and distribution of copyrighted DVDs. Many newer DVD players are able to play DivX... DivX, 3ivx is a video codec created by 3ivx Technologies. 3ivx is a codec suite that allows the creation of MPEG-4 compliant data streams. It has been designed around a need for decreased processing power for use mainly in embedded systems. 3ivx provides plugins and filters that allow the MPEG... 3ivx, FFmpeg is a set of open source computer programs that can record, convert and stream digital audio and video. It includes libavcodec, a leading audio/video codec library. FFmpeg is developed under Linux, but it can compile under most operating systems, including Windows. The project was started by Fabrice Bellard... FFmpeg, and Nero Digital is a version of MPEG-4-compliant compression technology, with video coding algorithms and AAC audio. Nero Digital was developed by Nero AG of Germany, and Ateme of France. It conforms the MPEG-4 ISO standard completely except for chapters and subtitles (but this may become ISO MPEG... Nero Digital. It is one of the (approximately 20) "profiles" defined in MPEG-4 Part 2.

Notable technical features of ASP relative to the Simple Profile (SP) that is another profile also defined in MPEG-4 part 2 (and which is roughly similar to H.263 is a video codec designed by the ITU-T as a low-bitrate encoding solution for videoconferencing. It was first designed to be utilized in H.324 based systems (PSTN and other circuit-switched network videoconferencing and videotelephony), but has since found use in H.323 (RTP/IP... H.263) include:

• Support for Interlacing is a method of displaying images on a raster-scanned display device, such as a cathode ray tube (CRT). The method causes less visible flickering than non-interlaced methods. The display alternates between drawing the even-numbered lines and the odd-numbered lines of each picture. In the PAL... interlaced video
• Support for B pictures
• Quarter-sample Motion compensation is a technique (or a set of techniques) to reduce temporal redundancy of a video sequence. It is used in video compression. A video sequence consists of a number of pictures - usually called frames. Subsequent frames are very similar, thus, containing a lot of redundancy. The goal is... motion compensation
• Global Motion compensation is a technique (or a set of techniques) to reduce temporal redundancy of a video sequence. It is used in video compression. A video sequence consists of a number of pictures - usually called frames. Subsequent frames are very similar, thus, containing a lot of redundancy. The goal is... motion compensation

The interlace support is designed in a basically similar way to the way it is found in MPEG-2 (1994) is the designation for a group of audio and video coding standards agreed upon by MPEG (Moving Pictures Experts Group), and published as ISO standard 13818. MPEG-2 is typically used to encode audio and video for broadcast signals, including digital satellite and Cable TV. MPEG-2... MPEG-2 Part 2.

The B picture support is designed in a basically similar way to the way it is found in MPEG-2 (1994) is the designation for a group of audio and video coding standards agreed upon by MPEG (Moving Pictures Experts Group), and published as ISO standard 13818. MPEG-2 is typically used to encode audio and video for broadcast signals, including digital satellite and Cable TV. MPEG-2... MPEG-2 Part 2 and H.263.v2 is a video codec for low-bitrate video compression. Designed to supersede H.263, it advances H.263 by adding several annexes which substantially improve encoding efficiency. See H.263 page for more details. Categories: Video codecs | ITU-T recommendations ... H.263v2.

The quarter-sample motion compensation feature of ASP was innovative, and was later also included (in somewhat different forms) in ... MPEG-4 Part 10 and VC-1 is the title of the SMPTE standardization effort of a video codec based on Microsoft Windows Media Video version 9. It is an evolution from the DCT-based video codec defined in MPEG-2 (aka 13818-2). It is widely seen as an alternative to the evolutionary MPEG... VC-1. It is considered the most beneficial innovative feature of ASP.

The global motion compensation feature is not actually supported in some implementations although the standard officially requires decoders to support it. Most encoders do not support it, and some experts say that it does not ordinarily provide a sufficient compression benefit to justify its computational complexity.