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    Efficient rate-distortion optimized media streaming for tree-structured packet dependencies

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    Date
    2007-10-01
    Author
    Hamzaoui, Raouf;
    Cardinal, J.;
    Röder, M.
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    Abstract
    When streaming packetized media data over a lossy packet network, it is desirable to use transmission strategies that minimize the expected distortion subject to a constraint on the expected transmission rate. Because the computation of such optimal strategies is usually an intractable problem, fast heuristic techniques are often used. We first show that when the graph that gives the decoding dependencies between the data packets is reducible to a tree, optimal transmission strategies can be efficiently computed with dynamic programming algorithms. The proposed algorithms are much faster than other exact algorithms developed for arbitrary dependency graphs. They are slower than previous heuristic techniques but can provide much better solutions. We also show how to apply our algorithms to find high-quality approximate solutions when the dependency graph is not tree reducible. To validate our approach, we run simulations for MPEG1 and H.264 video data. We first consider a simulated packet erasure channel. Then we implement a real video streaming system and provide experimental results for an Internet connection.
    Description
    Citation : Hamzaoui, R., Cardinal, J. and Roder, M. (2007) Efficient Rate-Distortion Optimized Media Streaming for Tree-Structured Packet Dependencies. IEEE Transactions on Multimedia, 9(6), pp. 1259-1272.
    URI
    http://hdl.handle.net/2086/293
    DOI
    http://dx.doi.org/10.1109/TMM.2007.902872
    ISSN : 1520-9210
    Research Group : Centre for Electronic and Communications Engineering
    Research Institute : Institute of Artificial Intelligence (IAI)
    Research Institute : Institute of Engineering Sciences (IES)
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    • School of Engineering and Sustainable Development [1852]

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