A Two-Level Representation Model for Effective Video Data Storage

The main issues characterizing current video applications are their strong requirements for huge storage spaces and their need for timing synchronization Video data storage is a critical research topic due to the so called I O bottle neck problem which a ects the quality of service of video applications This paper introduces a two level video data representation model in order to guide video data storage on a tertiary storage subsystem A simulation model has been developed to evaluate di erent video placement strate gies based on both Constructive and Iterative Improvement approaches Experimentation has been carried out for the proposed placement approaches as well as for a typical ran dom placement policy which serves as a comparison refer ence Iterative Improvement placement has been proven to outperform the other considered video data placement ap proaches in both seek and service times Index terms multimedia data storage video data repre sentation video data placement algorithms