An efficient transmission schedule writing scheme for a normal playback after interactive operations in a stored video

摘要

In this paper we propsose an efficient scheme to write a transmission schedule for a playback restart of a vid eo stream at a new frame position after interactive op erations such as jump or fast playback in a Video-On-Demand (VOD) service. The proposed scheme is based on convergence characteristics, that is, transmission schedules with different playback startup frame position in a video stream meet each other at some frame position. The scheme applies a bandwidth smoothing from a new frame position to a convergence position without considering all the remaining frames of a video stream. And then the scheme transmits video data according tot he new schedule from the new frame position to the convergence position, and then transmits the remaining video data according to the reference schedule from the convergence position to the last frame position. In this paper, we showed that there existed the convergence position corresponding to any frame position in a video stream through many experiments based on MPEG-1 bit trace data.