Open Access

A Complexity-Aware Video Adaptation Mechanism for Live Streaming Systems

EURASIP Journal on Advances in Signal Processing20072007:047921

https://doi.org/10.1155/2007/47921

Received: 3 October 2006

Accepted: 21 March 2007

Published: 3 June 2007

Abstract

The paradigm shift of network design from performance-centric to constraint-centric has called for new signal processing techniques to deal with various aspects of resource-constrained communication and networking. In this paper, we consider the computational constraints of a multimedia communication system and propose a video adaptation mechanism for live video streaming of multiple channels. The video adaptation mechanism includes three salient features. First, it adjusts the computational resource of the streaming server block by block to provide a fine control of the encoding complexity. Second, as far as we know, it is the first mechanism to allocate the computational resource to multiple channels. Third, it utilizes a complexity-distortion model to determine the optimal coding parameter values to achieve global optimization. These techniques constitute the basic building blocks for a successful application of wireless and Internet video to digital home, surveillance, IPTV, and online games.

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Authors’ Affiliations

(1)
Department of Electrical Engineering, Graduate Institute of Communication Engineering, National Taiwan University
(2)
Department of Electrical Engineering, Graduate Institute of Communication Engineering, and Graduate Institute of Networking and Multimedia, National Taiwan University

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Copyright

© Meng-Ting Lu et al. 2007

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.