Cache Algorithm and its Evaluation of Multiple Quality Video Data Distribution Service

Abstract

In the VOD service, the low resolution video data is expected for content searching, and the hi resolution video data is expected for browsing. In our previous studies, we presented the effect of scalability encoding in cache utilization. In this study, we report comprehensive experiments on cases of various cache sizes and various user access tendency. As a result, if the cache size is enough to store the contents that often accessed, the data transferred between VOD server and cache terminal can be decreased by the scalability encoding, but the users waiting time is not much decreased.