What is MPEG?
MPEG stands for the Motion Picture Experts
Group,which is part of the International
Organization for Standardization(ISO) and
International Electrotechnical Commission(IEC).
However, MPEG is charged with creating and
publishing standards for various technology.
MPEG 1: video codec used for Video CDs
MPEG 2: used on DVDs and in most digital
MPEG 4: used for Internet and broadcast
MPEG 7: describing the multimedia content
that supports degree of interpretation
MPEG 21: defining a normative open framework
for multimedia delivery
mpeg1 is a video codec used for Video CDs, and
also sometimes for online video. The quality is
roughly comparable to that of VHS. Almost every
computer in the world can play this codec, and
very few DVD players do not support it.
mpeg2 is used on DVDs and in most digital
video broadcasting and cable distribution
systems. When used on a standard DVD, it offers
good picture quality and supports widescreen.
The MPEG2 format can be used on HDDVD and
mpeg4 is an MPEG standard that can be used for
Internet, broadcast, and on storage media,
MPEG4 offers improved quality relative to
MPEG2.MPEG4 has recently been adopted into a
number of company products, for example, the
iPod, Mac OS X, as well as HD DVD and Bluray
discs. Like MPEG2, it supports both
progressive scan and interlaced video.
mpeg7, formally named "Multimedia Content
Description Interface", is a standard for
describing the multimedia content data that
supports some degree of interpretation of the
information meaning, which can be passed onto,
or accessed by, a device or a computer code.
MPEG7 is not aimed at any one application in
particular; rather, the elements that MPEG7
standardizes support as broad a range of
applications as possible.
mpeg21 aims at defining a normative open
framework for multimedia delivery and
consumption for use by all the players in the
delivery and consumption chain. This open
framework will provide content creators,
producers, distributors and service providers
with equal opportunities in the MPEG21 enabled
open market. This will also be to the benefit
of the content consumer providing them access
to a large variety of content in an