TABLE OF CONTENTS MPEG-2 extends MPEG-1 to cover a wider range of applications. The MPEG-1 chapter should be reviewed to become familiar with the basics of MPEG before reading this chapter.
The primary application targeted during the definition process was all-digital transmission of broadcast-quality video at bit rates of 4 9 Mbps. However, MPEG-2 is useful for many other applications, such as HDTV, and now supports bit rates of 1.5 60 Mbps.
MPEG-2 is an ISO standard (ISO/IEC 13818), and consists of eleven parts:
| systems | ISO/IEC 13818-1 |
| video | ISO/IEC 13818-2 |
| audio | ISO/IEC 13818-3 |
| conformance testing | ISO/IEC 13818-4 |
| software simulation | ISO/IEC 13818-5 |
| DSM-CC extensions | ISO/IEC 13818-6 |
| advanced audio coding | ISO/IEC 13818-7 |
| RTI extension | ISO/IEC 13818-9 |
| DSM-CC conformance | ISO/IEC 13818-10 |
| IPMP | ISO/IEC 13818-11 |
As with MPEG-1, the compressed bit-streams implicitly define the decompression algorithms. The compression algorithms are up to the individual manufacturers, within the scope of an international standard.
The Digital Storage Media Command and Control (DSM-CC) extension (ISO/IEC 13818-6) is a toolkit for developing control channels associated with MPEG-2 streams. In addition to providing VCR-type features such as fast-forward, rewind, pause, etc., it may be used for a wide variety of other purposes, such as packet data transport. DSM-CC works in conjunction with next-generation packet networks, working alongside Internet protocols as RSVP, RTSP, RTP and SCP
The Real Time Interface (RTI) extension (ISO/IEC 13818-9) defines a common interface point to which terminal equipment manufacturers and network operators can design. RTI specifies a delivery model for the bytes of a MPEG-2 System stream at the...
