Video - MPEG
The Moving Picture Experts Group or MPEG is a working group of ISO / IEC charged with the development of video and audio encoding standards. Its first meeting was in 1988 in Hanover . As of late 2005, MPEG has grown to include approximately 350 members per meeting from various industries, universities, and research institutions. MPEG's official designation is ISO/IEC JTC1/SC29 WG11.
MPEG (pronounced EM-peg) has standardized the following compression formats and ancillary standards:
- MPEG-1 : Initial video and audio compression standard. Later used as the standard for Video CD , and includes the popular Layer 3 ( MP3 ) audio compression format.
- MPEG-2 : Transport, video and audio standards for broadcast-quality television. Used for over-the-air digital television ATSC , DVB and ISDB , digital satellite TV services like Dish Network , digital cable television signals, and (with slight modifications) for DVD video discs.
- MPEG-3 : Originally designed for HDTV , but abandoned when it was discovered that MPEG-2 was sufficient for HDTV.
- MPEG-4 : Expands MPEG-1 to support video/audio "objects", 3D content, low bitrate encoding and support for Digital Rights Management . Several new (newer than MPEG-2 Video) higher efficiency video standards are included (an alternative to MPEG-2 Video), notably, Advanced Simple Profile and H.264/MPEG-4 AVC .
- MPEG-7 : A formal system for describing multimedia content.
- MPEG-21 : MPEG describes this future standard as a multimedia framework .
See also
External links
* The above text is quoted from Wikipedia
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