Combined wavelet video coding and error control for Internet streaming and multicast
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This paper proposes an integrated approach to Internet video streaming and multicast (e.g., receiver-driven layered multicast (RLM) ) based on combined wavelet video coding and error control. We design a packetized wavelet video (PWV) coder to facilitate its integration with error control. The PWV coder produces packetized layered bitstreams that are independent among layers while being embedded within each layer. Thus a lost packet only renders the following packets in the same layer useless. Based on the PWV coder, we search for a multi-layered error control strategy that optimally trades off source and channel coding for each layer under a given transmission rate to mitigate the effects of packet loss. Our integrated approach extends the single-layered approach for RLM in . Theoretical analysis shows a gain of up to one dB on a channel with 20% packet loss over results presented in . This is also substantiated by our simulations with a gain of up to 2.2 dB.
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