137 What happened at the MPEG - NY meeting? MPEG-2 Video
Description
This article is from the MPEG FAQ, by Frank Gadegast phade@cs.tu-berlin.de with numerous contributions by others.
137 What happened at the MPEG - NY meeting? MPEG-2 Video
MPEG is developing the MPEG-2 Video Standard, which specifies the coded
bit stream for high-quality digital video. As a compatible extension,
MPEG-2 Video builds on the completed MPEG-1 Video Standard (ISO/IEC IS
11172-2), by supporting interlaced video formats and a number of other
advanced features, including features to support HDTV.
As a generic International Standard, MPEG-2 Video is being defined in
terms of extensible profiles, each of which will support the features
needed by an important class of applications. At the March MPEG meeting
in Sydney, the MPEG-2 Main Profile was defined to support digital video
transmission in the range of about 2 to 15 Mbits/sec over cable, satellite,
and other broadcast channels, as well as for Digital Storage Media (DSM)
and other communications applications. Building on this success at this
week's New York meeting, MPEG experts from participating countries in
Asia, Australia, Europe, and North America further defined parameters of
the Main Profile and Simple Profile suitable for supporting HDTV formats.
This week the MPEG experts also extended the features of the Main Profile
by defining a hierarchical/scalable profile. This profile aims to support
applications such as compatible terrestrial TV/HDTV, packet-network
video systems, backward-compatibility with existing standards (MPEG-1
and H.261), and other applications for which multi-level coding is
required. For example, such a system could give the consumer the option
of using either a small portable receiver to decode standard definition TV,
or a larger fixed receiver to decode HDTV from the same broadcast signal.
This week's accomplishments in New York mean that the technical
definition of MPEG-2 Video has been completed. This was a critical
milestone, and shows that MPEG-2 Video is on schedule for a Committee
Draft in November.
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