Information Technology Reference
In-Depth Information
Broadcasting
Communication
Europe
mobile
DVB
3GPP/
3GPP2
WWW
ATSC
USA
ITU-R
ITU-T
ITU
W3C
SMPTE
MPEG
IETF
AVS
China
ISO/IEC
ISO/IEC
internet
IEEE
802
ARIB
Japan
DVD
forum
LAN
BDA
DVD
Blu-Ray Disc
Package Media
Fig. 3
Standardization Organizations and their Relationships
Among the digital video related standardization organizations, MPEG has been
and continues to occupy the central position of video coding technology, and
MPEG standards are considered as one of the essential technologies for digital
video services. Since its inauguration in 1988, MPEG has standardized MPEG-1,
MPEG-2/H.262, MPEG-4 and AVC/H.264, and has been promoting the develop-
ment and standardization of multimedia technologies including video coding.
MPEG standards specifies the technologies to compress video data with compres-
sion ratios in the range from 30:1 to 100:1 as well as the technologies for trans-
mission and storage of video and audio contents, and offers open specifications
and compatibilities.
Furthermore, MPEG has cooperated on international standardization of video
coding with VCEG (Video Coding Experts Group) which is affiliated with ITU-
T/SG16. Experts from both MPEG and VCEG committees formed the JVT (Joint
Video Team) for the development of AVC/H.264.
2.2.2 Improvement in Compression Ratio by MPEG
The compression ratio of video data has improved through MPEG standardization.
For example, AVC/H.264 can perform twice as much compression ratio as
MPEG-2. High resolution and multi-channel were attained by the improvement of
the compression ratio of video coding by MPEG.
