5-3 A study on bit-rate conversion of MPEG video stream based on DCT coefficient deletion

Abstract

This paper describes our research on synchronization of real-time transportation of various media signals(compressed video and audio, etc.) between different clock networks. When reference clocks is different from each other, we must convert bit-signal synchronization at the point where difference network is connected. We will specifically consider MPEG Transport Stream in this paper. In order to adjust the gap of different network clocks, we have tried to delete DCT Coefficient Forcibly for reduction of video-stream bit-rate