Video-on-Demand with Differentiated QoS based-on Available Bandwidth in IPTV

In this paper we proposed a dynamic bandwidth detection scheme to adaptively switch the transportation quality of video streaming. Also an IPTV service system with a Video on Demand and Live video broadcast system is implemented to examine the performance of the dynamic bandwidth scheme. The result shows that it can adapt to the network environment to provide an appropriate video quality without suffering high delay or interruption.