China Telecom's Shanghai Research Institute of Inquiry into the Equality
International standards for audio and video codec main two series: ISO/IECJTC1 MPEG family of standards developed; ITU developed for multimedia communication video coding standard H.26x series and G.7 Series audio coding standard. MPEG and the ITU in 1994 by co-developed the first generation of MPEG-2 audio and video coding standards representatives, is currently the most widely accepted international standards for audio and video.
More than a decade the evolution of audio and video coding technology and industrial application background itself have undergone significant changes, a rising star of giving birth. Audio and video industry can now select the source coding standard are four: MPEG-2, MPEG-4, MPEG-4AVC (referred to as H.264, also known as JVT, AVC), AVS.
Can speculate, because of technical obsolescence, etc. need to be updated, and the reasons for the higher charges, MPEG-2 will exit the stage of history. AVS and H.264 digital audio and video industry who will become the standard? This issue is still outstanding, compared to these two standards as the industry focus.
AVS is China with independent intellectual property rights of second-generation source coding standard. As the name suggests, the "source" of information in the "source", source coding technology to solve key problems is the mass of digital audio and video data (ie the initial data source) and coding issues, it also called digital audio and video codec technology . Obviously, it is then digital information transmission, storage, playback and other aspects of the premise, it is common digital audio and video industry based standards. AVS standard is "advanced information technology, audio and video coding," series of standards referred to, AVS standard, including systems, video, audio, digital rights management and the four main technical standards and standards conformance testing support.
H.264 is the ITU-T VCEG (Video Coding Experts Group) and ISO / IEC for MPEG (Moving Picture Coding Experts Group) video group co-formed joint (JVT: joint video team) proposed a new digital video coding standard, it is an ITU-T's H.264, is ISO / IEC for MPEG-4 Section 10. The domestic industry's commonly referred to as MPEG-4 is MPEG-4 Part 2. H.264 standard starting from January 1998 the draft solicitation, to July 2003, the entire H.264 (ISO/IEC14496-10) specification was finalized. January 2005, MPEG H.264 authentication organization formally released the report, from all demonstrated the availability of H.264 as well as the effect of a variety of tools, from the standard point of view, confirms the maturity of H.264, from the standard-setting to promulgate, H.264 has been the ITU, MPEG, DVD, DVB, 3GPP and other industrial organizations to jointly promote the international standard for video coding.
AVS and H.264, compared have the following characteristics: (1) high-performance, and the coding efficiency of H.264 at the same level; (2) low complexity, computational complexity significantly lower than the H.264, hardware and software implementation costs are lower than H.264; (3) China has mastered the key intellectual property, patent licensing model is simple, low cost. I am a professional writer from China Chemicals Products, which contains a great deal of information about motorcycle gear bags , iron palm bag, welcome to visit!
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