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Rate control for multimedia streaming has been the subject of many recent research activities and is crucial for peer-to-peer networks, where controlling the rate at the source is ineffective. In this paper we propose a two-stage procedure for rate control. In particular, the first stage, based on Integer Linear Programming and a distortion model, optimally labels packets with a suitable priority...
In this paper, we explore real time N-way video communication over enterprise networks based on scalable video coding, SVC (Scalable extension of H.264/AVC). We present a bit stream extraction strategy based on GOP size prediction and perceptual importance of temporal and quality enhancements, and validate the strategy through initial subjective testing. We also compare it with extraction based on...
An IPTV network contains characteristics of both a unicast environment and a broadcast environment. For both environments, techniques to accelerate channel switching exist. In a unicast environment a bandwidth efficient implementation to accelerate channel switching can be obtained with non scalable video coding, while for a broadcast environment the same acceleration is more optimal using scalable...
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