Proxy caching for video-an-demand using flexible starting point selection
IEEE Transactions on Multimedia
Efficient segment based streaming media transcoding proxy for various types of mobile devices
PCM'07 Proceedings of the multimedia 8th Pacific Rim conference on Advances in multimedia information processing
Review: A survey of schemes for Internet-based video delivery
Journal of Network and Computer Applications
Segment based caching replacement algorithm in streaming media transcoding proxy
APNOMS'07 Proceedings of the 10th Asia-Pacific conference on Network Operations and Management Symposium: managing next generation networks and services
Streaming media service based on fuzzy similarity in wireless mobile networks
The Journal of Supercomputing
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This work derives a generalized video object profit function from the extended weighted transcoding graph to calculate the individual cache profit of certain versions of a video object, and the aggregate profit from caching multiple versions of the same video object. This proposed function takes into account the popularity of certain versions of an object, the transcoding delay among versions, and the average duration of access of each version. Based on the profit function, cache-replacement algorithms are proposed to reduce the startup delay and network traffic by efficiently caching video objects with the most profits. Two kinds of simulations were conducted to evaluate the performance of the proposed algorithms. These simulations exploit partial viewing traces and complete viewing traces, separately. The results demonstrate that the proposed algorithms outperform the competing algorithms by 15%-39% in delay saving ratio and 5%-10% in byte-hit ratio