Strategies for Efficient Streaming in Delay-Tolerant Multimedia Applications

We consider Multimedia applications where clients specify a minimum desired stream rate (quality) and a time till when they are willing to wait, termed delay tolerance. The Content Service Provider’s (CSP) objective is to service as many clients’ requests for the same multimedia content with a single stream while satisfying their requirements. We propose an optimization approach to determine the rates delivered at clients and study three transcoder deployment strategies: (i) Source Transcoding (ST): when content encoded at different rates are available only at the source (ii)Anywhere Transcoding (AT): when transcoding capability is available at all intermediate nodes, and (iii)Selected Node Transcoding (SNT): when transcoding capability is available at selected intermediate nodes. Considering the complexity of the optimal solution, we propose a set of heuristic based algorithms for delivering enhanced rates to clients using the three strategies. A practical content dissemination n...

• Type: Conference
• Year: 2006
• Where: ISM
• Authors: Saraswathi Krithivasan, Sridhar Iyer
• Keywords: Intermediate Nodes, ISM 2006, Minimum Desired Stream, Transcoding