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正当人们沸沸扬扬议论VCD能流行多久、DVD究竟何时才能代替VCD的时候,一种比DVD更先进更优越的VOD却悄悄地向我们走来。VOD是英文Video On Demand的缩写,即视频点播系统。它是一种以传输网络为基础,按用户要求提供诸如动态视频、音频、数据、文字等多媒体信息检索服务的交互式电视系统。这种按用户要求播放视频节目的VOD系统,彻底改变了传统电视系统的单向信息传播方式。也就是说,现在用户只能被动地收看电视节目,即使错过了好节目或节目不佳也无可奈何的局面将一去不再复返,而且用户无需依靠录像机、
Just as people heatedly discussed the popularity of VCD, how long it took to replace DVDs, a more advanced and superior VOD than DVD came quietly to us. VOD is the abbreviation of English Video On Demand, namely video on demand system. It is based on the transmission network, according to user requirements such as dynamic video, audio, data, text and other multimedia information retrieval services interactive television system. This kind of VOD system which broadcasts the video program according to the user request completely changed the unidirectional information transmission mode of the traditional television system. In other words, users can now watch TV programs passively. Even if they miss a good program or show a bad one, they will not go back forever. Instead of having to rely on video recorders,