IEC11172-3 MPEG国际标准

This standard is a committee draft that was submitted for approval to ISO-IEC/JTC1 SC29 on 22 November 1991.  It was prepared by SC29/WG11, also known as MPEG (Moving Pictures Expert Group).  MPEG was formed in 1988 to establish a standard for the coded representation of moving pictures and associated audio stored on digital storage media.

This standard is published in four parts.  Part 1 - systems - specifies the system coding layer of the standard.  It defines a multiplexed structure for combining audio and video data and means of representing the timing information needed to replay synchronized sequences in real-time.  Part 2 - video - specifies the coded representation of video data and the decoding process required to reconstruct pictures.  Part 3 - audio - specifies the coded representation of audio data.  Part 4 - conformance testing - is still in preparation.  It will specify the procedures for determining the characteristics of coded bit streams and for testing compliance with the requirements stated in Parts 1, 2 and 3.