Seamless Bit-Stream Switching in Multirate-Based Video Streaming Systems

Wei Zhang, Bing Zeng
2006 EURASIP Journal on Advances in Signal Processing  
This paper presents an efficient switching method among non-scalable bit-streams in a multirate-based video streaming system. This method not only takes advantage of the high coding efficiency of non-scalable coding schemes (compared with scalable ones), but also allows a high flexibility in streaming services to accommodate the heterogeneity of real-world networks. One unique feature of our method is that, at every preselected switching point, the reconstructed frame at each rate or two
more » ... rate or two reconstructed frames at different rates will go through an independent or a joint processing in the wavelet domain, using an SPIHT-type coding algorithm. Another important step in our method is that we will apply a novel bit allocation strategy over all hierarchical trees that are generated after the wavelet decomposition so as to achieve a significantly improved coding quality. Compared with other existing methods, our method can achieve the seamless switching at each preselected switching point with a better rate-distortion performance.
doi:10.1155/asp/2006/49084 fatcat:dqheychmwfbvxixyetdsthup3u