A delivery method of videos with required minimum bandwidths

Networked video delivering systems have been developing. When videos are delivered from servers to client sites over a network, they are played without skew time at client sites. Moreover, link overflow does not occur, since capability of links are restricted. The systems allocate resources for meeting these requirements. For effective delivery, it is necessary that a policy of scheduling is established. A proposed policy is that the video is transmitted with the minimum bandwidth. The minimum bandwidth is corresponding to a consuming ratio of the video. The scheduling method consists of three steps. They are to find paths for delivering the video clips, to calculate required time to deliver them without link overflow, and to set their start times from servers without skew time. Moreover, simulation of this method is achieved by making schedules to deliver video. This policy is simple and flexible to deliver videos.