Proxy Caching Mechanisms with Quality Adjustment for Video Streaming Services
Masahiro Sasabe, Yoshiaki Taniguchi, Naoki Wakamiya, Masayuki Murata, Hideo Miyahara · 2003
this paper, we propose proxy caching mechanisms to accomplish high-quality and low-delay video streaming services. In our proposed system, a video stream is divided into blocks for e#- cient use of cache bu#er. A proxy cache server is assumed to be able to adjust the quality of cached or retrieved video blocks to requests through video filters. We evaluate our proposed mechanisms in terms of the required bu#er size, the play-out delay and the video quality through simulation experiments. Furthermore, to verify the practicality of our mechanisms, we implement our proposed mechanisms on a real system and conducted experiments