| With the rapid development of the Mobile Internet,the media and communications industry began to show the trend of cross-border integration.with the further promotion of the triple play,popularization of high speed optical broadband,telecom operators are more actively involved in the operation of TV screen products.Relying on the powerful IP network and more flexible interaction,IPTV stand out in the competition with traditional cable TV.IPTV has made new progress in the integrated broadcast control platform,technical standards,operation mode and market development,which has entered a new stage of orderly and steady development gradually.Based on the international mainstream technology and its own characteristics,IPTV has formed a technical architecture composed of integrated broadcast control platform and transmission system.This paper mainly analyzes and discusses the IPTV product architecture,the network composition,the key technologies and the evolution trend.This paper mainly studies the video coding technology of IPTV,streaming media technology,CDN content distribution technology and so on.This paper also studies the status and construction requirements of the China Telecom IPTV platform CDN network,and develops the demand analysis and establishes a model.From the perspective of meeting the needs of business development and network scalability,this paper puts forward the ideas and principles of cross domain IPTV CND networking,designs a cross domain CDN technology plan based on IPTV platform,studies the core technology,and verifies it through networking. |
