subject: H.264/avc Technology And Its Pragmatic Development Of Strategic Thinking-h.264, Avc, Video Coding - [print this page] As NGN, 3G and 3G evolution and NGBW such as video, multimedia and the rapid development of network applications demand video services and storage applications as the core technology of high-efficiency video digital compression coding (decoding ) technology, more and more cause for concern, as the current broadcasting, video and multimedia communications in the field of bright spots and hot spots.
Video coding standard developed two organizations ITU-T Video Coding Experts Group (VCEG) and ISO / IEC of the Moving Picture Experts Group (MPEG).
ITU-T in 1993 developed the first video coding standard H.
261, the output rate is p 64kbit / s, mainly for other prospective broadband ISDN and ATM and broadband video channel, not suitable for PSTN and mobile communications and limited bandwidth narrowband channel and network applications. ; order to meet the needs of low-rate video communication, ITU-T in 1996 and launched in less than suitable for 64kbit / s channel rate transmission of video coding standard H. 263.1998 years and launched the H. 263 of the second edition of the H. 263 +, providing 12 different selectable modes and other features to further improve the compression performance; also begun to develop and further improve the performance of the recent and long-term goals. The term goal shall be established in 2000 H. 263 third edition of the H. 263 + +, its long-term goal of the so-called standard H. 26x, as H. 264 lay the foundation for the development of standards.
Introduced in ITU-T H. 26x series of standards at the same time, ISO / IEC led the corresponding video coding standard, including its business, including management, are also actively promoted the formation of a well-known MPEG-x series of standards (MPEG-1, MPEG-2, MPEG-4, MPEG-7 and MPEG-21, etc.), and received a more extensive use.
2001 , MPEG recognized H. 26L of the potential advantages and the need for joint work with VCEG to set up a joint cooperation between the two video groups (JVT). 2001 9 months, at the first meeting of the JVT developed by H. 26L-based H. 264 draft standards and the test model TML-9. 2003 3 months, held in Pattaya, Thailand's seventh JVT meeting, JVT formation of the final draft standards were submitted to ITU-T and ISO / IEC approval, to form a the second quarter of 2003, a unified standard H. 264/AVC. The standard ITU-T as H. 264; in the ISO / IEC is referred to as MPEG4-Part10AVC (AdvancedVideoCoding, Part 10, Advanced Video Coding). This is the H. The basic origin of 264/AVC.
H. 264/AVC in compression coding efficiency, self-adaptive video processing capabilities and network level, especially for IP networks and mobile networks, adaptive processing, anti-interference ability and stubborn health and other aspects, compared with H. 263/MPEG-4 were improved, which since 2003 has not been the video industry and some vendors are starting H. 264/AVC of great hope, even to the almost fanatical pursuit of the situation like. Is not that high expectations right, H. 264/AVC indeed a wide range of applications, including fixed or mobile video phone, mobile phones, real-time video conferencing, video surveillance, streaming media, multimedia (Super Media) Video, Internet video and multimedia (hypermedia), IPTV, Mobile TV, broadband telephony and video information storage, etc.
by: gaga
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