The Research On Mutimedia Streaming Technology Of IPTV Service

Along with the Internet technology fast development, the multimedia information on-line transmission changes more and more importantly,flows the type technology the characteristic which downloads by it while broadcasts deeply profession the and so on entertainment,education, news welcome. Take the Internet network as the platform,flows the media take IP as the mode of transmission IPTV system,watched the television to the user the pattern to bring the brand-newchange, in 2006 in domestic had the considerable development. WhenIPTV technology by early few users to mass market popularization, in2007 namely has represented a IPTV inflection point.This article first simply introduced flows the media system the research significance, has analyzed the domestic and foreign research present situation, the research aim and the research technique;Introduced flows class media network transmission agreement which the media technology involves, flows the media service code technology MPEG1/2, MPEG4, H.264, AVS and so on; Next, the system introduction such as has flowed the media application domain IPTV, in view of IPTV system principle, composition, class media service, DRM, IPTV knowledge and so on essential technology.Receives, mainly aims at my development demand, designed and developshad the characteristic IPTV to flow the media service system, containsflowed the media selection and broadcast, the direct seeding, whenmoves the service and so on, flowed the media service in view ofthese, detailed concrete introduction its skeleton, realizationprinciple, realization way and core technology and so on; Then in viewof these designs, the test way and the test data which developed thefinal system has carried on the statistics, the analysis, finally hasproduced the summary and the conclusion, obtained this kind of patternlPTV to flow the media service system is a high performance, stablereliable, is easy to expand and the maintenance telecommunicationlevel flows the media service system.In the system design, highlighted me to design with emphasis flows themedia server several essential mentalities and the idea: How one isthe highly effective class media concurrent performance realizes, oneis the use bidirectional cushion solves in the present not extremely stable network environment guaranteed the user the class media serviceeffect, how one is does achieve the system to be easy to expand, thestable reliability. Finally, constructs the spot direct seedingsystem, may satisfy several dozens to several ten thousand concurrent class serviceability, and has the high performance, the high grade ofservice, the redundant reliability and the high extendedcharacteristic.