Long-term movie popularity models in video-on-demand systems: or the life of an on-demand movie
MULTIMEDIA '97 Proceedings of the fifth ACM international conference on Multimedia
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IEEE Transactions on Multimedia
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IEEE Transactions on Multimedia
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IEEE Transactions on Multimedia
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Energy-aware distributed scheduling for multimedia streaming over Internet of Things
International Journal of Ad Hoc and Ubiquitous Computing
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In this paper, we propose a novel proxy caching scheme for video-on-demand (VoD) services. Our approach is based on the observation that streaming video users searching for some specific content or scene pay most attention to the initial delay, while a small shift of the starting point is acceptable. We present results from subjective VoD tests that relate waiting time and starting point deviation to user satisfaction. Based on this relationship as well as the dynamically changing popularity of video segments, we propose an efficient segment-based caching algorithm, which maximizes the user satisfaction by trading off between the initial delay and the deviation of starting point. Our caching scheme supports interactive video cassette recorder (VCR) functionalities and enables cache replacement with a much finer granularity compared to previously proposed segment-based approaches. Our experimental results show a significantly improved user satisfaction for our scheme compared to conventional caching schemes.