Restructuring GOP algorithm to reduce video server load on VCR functionality

We address serious video server load resulting from the VCR functionality, and the restructuring algorithm of frame dependencies is presented to reduce the server load and minimize the requirements of the network bandwidth. The requested frames are transmitted and decoded without sending any redundant data. Thus, even for the VCR operations with high speed factors, the server still sends data at normal transmission rate. The video server cost can significantly reduce as well