What are the parts of the MPEG document?
The MPEG-1 specification (official title: ISO/IEC 11172 “Information technology – Coding of moving pictures and associated audio for digital storage media at up to about 1.5 Mbit/s”, Copyright 1993.) consists of five parts. Each document is a part of the ISO/IEC standard number 11172. The first three parts reached International Standard status in early 1993 (no coincidence to the nuclear weapons reduction treaty signed back then). Part 4 reached IS in 1994. In mid 1995, Part 5 will go IS. Part 1—Systems: The first part of the MPEG standard has two primary purposes: 1). a syntax for transporting packets of audio and video bitstreams over digital channels and storage mediums (DSM), 2). a syntax for synchronizing video and audio streams. Part 2—Video: describes syntax (header and bitstream elements) and semantics (algorithms telling what to do with the bits). Video breaks the image sequence into a series of nested layers, each containing a finer granularity of sample clusters (sequenc