P2p Video-on-demand Content Distribution System Development

In P2P stream media,the VOD is the most common and popular application. Taking full advantage of the internet,which facilitates recourse sharing and maximization of recourse application,the VOD provides a kind of more economic and widely-used service of interactive movie,TV and music playing.However, comparing with other types of P2P stream media,the development of the VOD technology is comparatively slower since the highly interaction based on the C/S structure makes it difficult to meet the requirement of large-scale playing.In regard to user facilitation,there are some shortcomings with current stream media,including low definition,buffering in local hard disk before playing,and not supporting drag playing etc.Therefore,to design and build a highly efficient VOD solution which can meet all users' needs becomes an important precondition for the VOD system's popularization.In this dissertation,the necessity to develop the VOD dispatching system on the current situation is first pointed out.Secondly,it analyzes the main function and the key process of the VOD dispatching system.Thirdly,through the discussion of the overall framework of the VOD dispatching system,the design and the means of transmission of key subsystem such as the interacting message manager, dispatching/data manager,and P2P etc,the application of the key technology of the system of P2P transmission and text message and application of Direct Show is analyzed.The main point of this thesis is to argue that how to use the interacting message manager to realize the VOD dispatching strategy,and the conclusion is that the system after running tests on many occasions can be able to meet the expected demand effects,can effectively resolve the server bottleneck problems.