MixNStream: Multi-Source Video Distribution with Stream Mixers

摘要

Many Internet streaming applications, such as distributed surveillance, multimedia webcasting and video thumbnails for Internet TV channel browsing, require video mixers where streams are aggregated as a single stream before presenting to users. We consider in this paper a multi-source streaming network with distributed mixers, where streams originated from multiple sources are mixed before presented to distributed users. We are interested in minimizing the worst-case delay from the source to users via the mixers. We propose an adaptive and distributed protocol called MixNStream, which continuously reduces the network diameter in the presence of churns. Through simulations on Internet-like topologies, we show that MixNStream achieves substantially better performance as compared with the state-of-the-art in terms of network delay and network stress.