Saturday, January 26, 2013
ITU Approves H.265 Video Standard
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A new video coding standard building on the ITU-T H.264 /
MPEG-4 AVC and opening the door to future video
transmission using only half the bandwidth was agreed by
ITU members on Friday.
The new standard, known informally as - High Efficiency
Video Coding - (HEVC) will need only half the bit rate of
its predecessor, ITU-T H.264 / MPEG-4 Part 10 - Advanced
Video Coding - (AVC), which currently accounts for over 80
per cent of all web video.
ITU-T's Study Group 16 has agreed first-stage approval
(consent) of the much-anticipated standard known formally
as Recommendation ITU-T H.265 or ISO/IEC 23008-2. It is
the product of collaboration between the ITU Video Coding
Experts Group (VCEG) and the ISO/IEC Moving Picture
Experts Group (MPEG).
Dr Hamadoun I. Toure, Secretary-General, ITU: "ITU-T H.264
underpinned rapid progression and expansion of the video
ecosystem, with many adopting it to replace their own
proprietary compression codecs. The industry continues to
look to ITU and its partners as the global benchmark for
video compression, and I have no doubt that this new
standard will be as effective as its predecessor in
enabling the next wave of innovation in this fast-paced
ITU-T H.264 / MPEG-4 AVC is deployed in products and
services from companies including Adobe, Apple, BBC, BT,
France Telecom, Intel, Microsoft, Motorola, Nokia,
Polycom, Samsung, Sony, Tandberg, Toshiba and others to
deliver high definition video images over broadcast
television, cable TV, a variety of direct-broadcast
satellite-based television services, Blu-Ray disc formats,
mobile phones, videoconferencing tools, digital storage
media, and Internet Protocol television (IPTV). It remains
the most deployed global video compression standard.
The new standard is designed to take account of advancing
screen resolutions and is expected to be phased in as
high-end products and services outgrow the limits of
current network and display technology.
Companies including ATEME, Broadcom, Cyberlink, Ericsson,
Fraunhofer HHI, Mitsubishi and NHK have already showcased
implementations of HEVC. The new standard includes a
"Main" profile that supports 8-bit 4:2:0 video, a "Main
10" profile with 10-bit support, and a "Main Still
Picture" profile for still image coding that employs the
same coding tools as a video "intra" picture.
The ITU/ISO/IEC Joint Collaborative Team on Video Coding
(JCT-VC) (formerly JVT) will continue work on a range of
extensions to HEVC, including support for 12-bit video as
well as 4:2:2 and 4:4:4 chroma formats. Another important
element of this work will be the progression of HEVC
towards scalable video coding. The three bodies will also
work within the Joint Collaborative Team on 3D-Video
(JCT-3V) on the extension of HEVC towards stereoscopic and
3D video coding.