| The construction of campus network in all levels of schools are getting more and morepopular, Campus network as the platform for school construction plays an important role inresources share, Internet access, electronic lesson preparation, teaching management. Moreand more people found in the campus network to meet the school's core application--teaching especially the teaching aspect, also did not play its due role. Many schools only havelead the information point to the classroom, cannot let the campus network plays animportant role in classroom teaching, as many schools only have lead the information point tothe classroom, cannot let the campus network plays an important role in classroom teaching,the campus network in the school teaching process have discounted. The teaching service,improving teaching efficiency and quality as the campus network construction the core goaland the core value, did not fully realize and excavate. In the campus network to set up thenetwork video-on-demand (VOD) system, giving full play to the campus network 's corevalues, strengthen the functions of campus network is one of the effective measures.This text introduction build network transliteration video on demand (VOD) systematicdevelopment technology on the basis of broadband campus network——DirectShow,DirectShow is one of the members of DirectX families, in technological development of theflow media, already quite ripe. Here recommend request engine, utilize DirectShowtechnological development one Source Filter use for receiving the flow media datum of thenetwork, and decode the playback to the multimedia dataflow. It's time, request engine canmultimedia educational resource that daily teaching use: Various DVD, VCD program,teaching video, train materials, etc. depend on audio frequency program transform suitablenetwork show data form, offer the request service of audio frequency and video of relyingmainly on the fact that the flow media employs for the masses of teachers and students. |
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