Research and realization of streaming media technology for substation tele-video system

The structure of provincial tele-video system was presented,which includes substation,regional monitoring center and the provincial monitoring center.The streaming media technology plays an important role in the realization of the system.For the same video,no matter how many clients request,it is only one copy transferred throughout the streaming media redistribution technology,which can reserve the limited bandwidth resource.When the number of the video transferred to monitoring center is large,it needs a cluster made up of some streaming media servers to redistribute the video.The improved weighted load factor scheduling algorithm to consider the factor of the video importance was also presented,which realizes the dynamic load balancing of streaming media server cluster and has an important meaning for constructing large-scale system.