The Research And Implement Of Streaming Media Courseware On Demand System Based On Web

With the rapid development of network technology and computer applications widely accessible, Web-based multimedia long-distance education development to the traditional educational methods has brought profound changes. Streaming media courseware on demand system as part of long-distance education, has integrated real-time and non-real-time , Who is complex, distribution and ensure the long-distance education has become a powerful accessional means and extension of traditional education.Some multimedia courseware on demand systems or live system exist inland and overseas, but the multimedia media courseware on demand system involves many key technologies, including the production of courseware technologies, the streaming media technologies and load balance technology. Although they has been in a relatively broad application in long-distance education, but the existing courseware on demand systems are still many shortcomings and deficiencies, such as immoderate human interface design, can not meet the long-distance distance needs;Or the playing quality is not high, even intermittent;And the system to respond slowly even collapse.In the light of the existing problems of courseware on demand system, text has in-depth researched on the basis of relevant literature and research results, made the corresponding solutions, and on this basis to implement a streaming media courseware on demand system. Through the operation of the certification, system has the advantage and feasibility. Text use ASF Indexer and Windows Media Player SDK to solve the synchronization and improve the network learning efficiency, and use Windows Media Services SDK to advance the network bandwidth utilization to settle the question of how to improve the quality of services. Through BP arithmetic, the traditional admission control algorithms can be optimized;streaming media server can measure the timely utilization of network bandwidth and adjust the flow of data transmission rate. Taking full advantage of networkbandwidth, the play quality become well, that is to say, the quality of services has enhanced highly. Through these technologies optimized, the streaming media courseware on demand system is simple, user-friendly, economic and good experiences to medium-sized and minitype organization to establish a system of long-education or on demand system.Final paper for the work carried out summary, prospected the streaming media courseware on demand system applications, and indicated that further research directions.