The MPEG Data Stream - Digital Video and Audio Broadcasting Technology - page 31

3 The MPEG Data Stream

The abbreviation MPEG, first of all, stands for Moving Pictures Experts
Group, that is to say MPEG deals mainly with the digital transmission of
moving pictures. However, the data signal defined in the MPEG-2 Stan-
dard can also generally carry data which have nothing at all to do with
video and audio and could be Internet data, for example. And indeed,
throughout the world there are MPEG applications in which it would be
futile to look for video and audio signals. Thus, in Wollongong, about 70
km south of Sydney in Australia, an Australian pay TV provider is operat-
ing a pure data broadcasting service using MPEG-2 data signals via
MMDS (Microwave Multipoint Distribution System). “Austar” are here
providing their customers with fast Internet links in the Mbit/s range.

MPEG = Moving Pictures Expert Group

MPEG1
Part1: systems
ISO/IEC111721
“PES layer“

MPEG2
Part1: systems
ISO/IEC138181
“Transportation“

MPEG4
Part1: systems
ISO/IEC14496

MPEG7
Metadata,
XML based
ISO/IEC15938
“Multimedia
Content
Description
Interface“

MPEG21
additional
“tools“
ISO/IEC21000

Part2: video
ISO/IEC111722
Part3: audio
ISO/IEC111723

Part2: video
ISO/IEC138182
Part3: audio
ISO/IEC138183

Part2: video
ISO/IEC144962
Part3: audio
(AAC)
ISO/IEC144963

Part6: DSMCC
ISO/IEC138186
Part7: AAC
ISO/IEC138187

Part10: video
(AVC, H.264)
ISO/1449610

Fig. 3.1. MPEG standards

As in the MPEG Standard itself, first the general structure of the MPEG
data signal will be described in complete isolation from video and audio.
An understanding of the data signal structure is also of greater importance