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VOD即交互式多媒体视频点播,是随着计算机技术和网络通讯技术的发展,综合了计算机技术、通讯技术、电视技术而迅速兴起的一门综合性技术。它利用了网络和视频技术的优势,彻底改变了传统电视广播中,用户收看节目时的被动状态,实现了节目按需收看和任意播放。它是集动态影视图像、静态图片、声音、文字等信息为一体,为用户提供实时、交互、按需点播服务的系统。目前,视频点播有三种形式;NYOD即就近式点播电视;TVOD即真实点播电视,真正支持即点即放,IVOD即我互式点播电视。
VOD is an interactive multimedia video on demand, which is a comprehensive technology that is rapidly emerging with the development of computer technology, network communication technology and computer technology, communication technology and television technology. It takes advantage of network and video technologies to radically change the passive state of users when watching programs in traditional television broadcasts, enabling programs to be viewed and played on demand. It is a set of dynamic video images, still images, sounds, text and other information as a whole, to provide users with real-time, interactive, on-demand service system. At present, there are three forms of video on demand; NYOD is on-demand TV on demand; TVOD is a real on-demand TV, which really supports point-and-drop, and IVOD means I-on-demand TV.