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Chapter 16. MPEG-4 OVERVIEW > MPEG-1: Coding of Moving Pictures and Associated ...

MPEG-1: Coding of Moving Pictures and Associated Audio or Digital Storage Media at up to About 1.5 Mbit/s

The MPEG-1 project started in May 1988 and became an official international standard (ISO/IEC 11172) in November 1992. MPEG-1 is widely used for storage of interactive movies on CDs at a rate of 1.4 megabits per seconds (1.4 Mbps), which produces video equivalent in quality to VHS's and CD-quality stereo audio. It was the first audiovisual standard defining the receiver (the client) instead of the transmitter (the server). MPEG-1 is also unique in that it operates independently of a particular video format (NTSC, PAL, SECAM, and so forth).

The MPEG-1 standard consists of three parts: systems, video, and audio. One or more audio and video streams with timing information are combined together to form a single stream (Figure 16-1). A number of techniques are used to achieve a high compression ratio on audio and video streams. In terms of MPEG standards, Systems describes the heart of the decoder and controls synchronization and composition of all media such as audio and video.


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