Vod流媒体点播系统是一个电影等流媒体的网上下载和播放软件的系统，类似PPS。很多公司都在使用类似的系统，比如新浪、土豆网等。-VOD streaming media on-demand system is a movie streaming online download and playback software system, similar to the PPS. Many companies are using similar systems, such as Sina, Tudou.