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Multimedia network teaching technology is a new teaching methods , it has changed the traditional teaching mode , it is widely welcomed by the teachers and students of their classroom information content , lively teaching style , thus becoming the modern educational technology development a new direction . Multimedia Network Teaching System ( such as voice classroom) the general practice , the use of a computer server and several purpose-built digital terminal constitutes a multimedia teaching network . This system is due to the use of non - standard network terminal equipment , the drawback is expensive and difficult to maintain , do not facilitate the upgrading of products . In view of this situation , this paper proposes a pure software based on standard network equipment and standard computer accessories , multimedia network teaching system new idea , \program design . This standard multimedia network teaching system is low cost , maintenance , parts interchangeability , easy to upgrade , etc. , will be the new direction of development of multimedia educational technology in the future . Solve real - time multimedia data network transmission , transmission, reception and playback multimedia network teaching technology base , is also pure software system solutions technical difficulties . In this paper, in the standard configuration of the network equipment , techniques and methods of real-time transmission of audio and video data stream using DirectShow streaming media technology , combined with state-of-the-art MPEG-4 encoding compression technology , the use of User Datagram Protocol (UDP) , and IP Multicast technology, the VC platform designed and implemented to meet the requirements of multimedia network teaching audio video capture, encoding compression , network transmission, decoding restore, and real-time playback and other functions . The results of this study for the realization of standard multimedia network teaching system has laid a good foundation.
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