The developments of multimedia and network technologies give a rise to Video-on-Demand (VOD), which is one of the most promising services in emerging broadband integrated service digital networks.

• 视频点播（VOD-Video On Demand）是多媒体技术与网络技术发展下的一个产物，是一项崭新的信息服务技术。它满足了人们自主收看节目、随机获取信息的需求，为我们的生活和学习带来诸多便利。