Based On The Streaming Media Network Design And Implementation Of The Vod System

VOD (Video On Demand) which is a product combined with a multimedia of technology and network technology is a new information technology service. By conducting in-depth discussions on the VOD system, People can watch the program according to the choice of their own needs and access to information,and,it brings us more efficient and convenient service for our learning and living.First,the paper makes a more detailed analysis and research on VOD system,then, Combined with the actual situation, gets the implementation of the Tianjin CTT VOD system.Tianjin CTT VOD system consists of multiple components. It is made up of the main Web site, LVS load balancing, media services, distributed storage network components and so on. Druing the designing of the system, it adapts a variety of advanced concepts and mainstream technology, such as LVS load balancing technology, distributed network storage technologies and the media document of the technology, and other mainstream technologies and advanced concepts. A three-tier B/S model is used to design Web site,and, the ASP call dynamic library is used in Database operations and business logic calculationThe idea of System Design as follows:firstly, the systems such as RM or RMVB format video or documents stored is storaged in distributed network systems. When the system receives a user request, The system will assign the users’requests to the best media server based on the LVS distribution strategy, According to the the requesting location of system users, then re-circulate through the media, users can decoded it and have real-time playback.VOD system is fully distributed architecture of the VOD System based on achieving the goal of this structure to designed and implement the the Tianjin CTT broadband VOD system. The system not only allows the effective protection of quality and speed with what user real-time viewing VOD, it will make a large number of data streams to be distributed on a more balanced of each local node. In A certain extent, the bandwidth utilization is improved.so, issue of consumption byRailcom backbone bandwidth is resolved. Application and promotion of this system in practical projects, no matter economic efficiency or social benefitsCan achieve better results...