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1 March 2007 Dynamic full-scalability conversion in scalable video coding
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Proceedings Volume 6507, Multimedia on Mobile Devices 2007; 650704 (2007)
Event: Electronic Imaging 2007, 2007, San Jose, CA, United States
For outstanding coding efficiency with scalability functions, SVC (Scalable Video Coding) is being standardized. SVC can support spatial, temporal and SNR scalability and these scalabilities are useful to provide a smooth video streaming service even in a time varying network such as a mobile environment. But current SVC is insufficient to support dynamic video conversion with scalability, thereby the adaptation of bitrate to meet a fluctuating network condition is limited. In this paper, we propose dynamic full-scalability conversion methods for QoS adaptive video streaming in SVC. To accomplish full scalability dynamic conversion, we develop corresponding bitstream extraction, encoding and decoding schemes. At the encoder, we insert the IDR NAL periodically to solve the problems of spatial scalability conversion. At the extractor, we analyze the SVC bitstream to get the information which enable dynamic extraction. Real time extraction is achieved by using this information. Finally, we develop the decoder so that it can manage the changing scalability. Experimental results showed that dynamic full-scalability conversion was verified and it was necessary for time varying network condition.
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Dong Su Lee, Tae Meon Bae, Truong Cong Thang, and Yong Man Ro "Dynamic full-scalability conversion in scalable video coding", Proc. SPIE 6507, Multimedia on Mobile Devices 2007, 650704 (1 March 2007);

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