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前言从2000年开始,由于国内宽带网络的飞速发展,原有的业务越来越不能满足用户的需要,为此国内多家电信级运营商根据宽带网络的特点,开始在宽带网络平台上为用户提供以视频服务为主的新的宽带应用业务的尝试。经过三年的探索,宽带视频应用系统有了长足的发展,但也存在很多的问题,如由于编码技术的原因,为用户提供的视频画面的质量不
Preface From 2000 onwards, due to the rapid development of domestic broadband networks, the original services are increasingly unable to meet the needs of users. To this end, a number of carrier-class domestic carriers started to work on broadband network platforms for users based on the characteristics of broadband networks Attempts to provide new broadband application services based on video services. After three years of exploration, broadband video application system has made great progress, but there are also many problems, such as due to coding technology, the quality of the video picture provided to the user is not