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Interactive Broadcasting System for VBR Encoded Videos

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3 Author(s)
W. -F. Poon ; Hong Kong Polytech. Univ., Hong Kong ; K. -T. Lo ; J. Feng

Video broadcasting has been proved to be an efficient technique to increase the scalability of a video-on-demand (VoD) system. In this paper, we address the problems in providing interactive functions for VBR encoded videos in a broadcast VoD system. A traffic smoothing scheme is proposed to support the VCR functions in delivering VBR videos over CBR channels by the staggered broadcasting protocol. By introducing a small buffering delay, the customers are able to join back to the broadcasting groups after the interactive functions. A system model is then developed to determine the optimal parameters such that the system can meet the delay requirement as well as provide the expected quality of service to the customers. The results show that the proposed system framework is very efficient in terms of bandwidth requirement and buttering delay to provide interactive VoD services.

Published in:

IEEE Transactions on Broadcasting  (Volume:53 ,  Issue: 2 )