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Internet Protocol (IP) based media delivery enables applications such as Voice over IP or, most recently, stereoscopic HD-TV. Suchlike transport of typically time-constrained media between two end-points has a number of important characteristics, both on the transport and content side. The authors focus on live streams of audio-visual data that are assumed as time-constrained and loss-tolerant. They aim at optimizing IP transport over heterogeneous networks by hybrid and loss domain separated error correction with residual error. Hybrid Error Correction (HEC) approaches the channel capacity dynamically and achieves Predictable Reliability and Predictable Delay (PRPD) when residual loss is tolerable, while loss domain separation applies optimally chosen HEC parameters to individual network segments.
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