|Technology||MPEG||Moving Picture Experts Group|
Moving Picture Experts Group (MPEG) is a method of defining compression of audio and visual (AV) digital data.
The Moving Picture Experts Group (MPEG) is a working group of authorities that was formed by ISO and IEC to set standards for audio and video compression and transmission. The MPEG standards consist of different Parts. Each part covers a certain aspect of the whole specification.
MPEG has standardized the following compression formats and ancillary standards:
- MPEG-1 (1993): Coding of moving pictures and associated audio for digital storage media at up to about 1.5 Mbit/s (ISO/IEC 11172).
- MPEG-2 (1995): Generic coding of moving pictures and associated audio information (ISO/IEC 13818).
- MPEG-3: MPEG-3 dealt with standardizing scalable and multi-resolution compression and was intended for HDTV compression but was found to be redundant and was merged with MPEG-2 as a result there is no MPEG-3 standard.
- MPEG-4 (1998): Coding of audio-visual objects. (ISO/IEC 14496) MPEG-4 uses further coding tools with additional complexity to achieve higher compression factors than MPEG-2.