Hybrid quality adaptation mechanism for layered multicast over the internet

Authors:
Bu-Sung Lee;Chai-Kiat Yeo;Ruijin Fu
Affiliations:
Center for Multimedia Network Technology, School of Computer Engineering, Nanyang Technological University, Nanyang Avenue, S-639798, Republic of Singapore;Center for Multimedia Network Technology, School of Computer Engineering, Nanyang Technological University, Nanyang Avenue, S-639798, Republic of Singapore;Center for Multimedia Network Technology, School of Computer Engineering, Nanyang Technological University, Nanyang Avenue, S-639798, Republic of Singapore
Venue:
Journal of Network and Computer Applications
Year:
2002

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Abstract

The use of multicast for distribution of real-time video over the Internet has received greater attention over the past few years. Unfortunately, a major challenge to its wide usage is the heterogeneity of networks and receivers. In this paper we proposed a mechanism called Hybrid Quality Adaptation (HQA) for multicasting layered MPEG-2 video. The receiver will subscribe to the number of layers based on their network and end-system resources. On the other hand, the video server adjusts the transmission characteristics of each layer to try and accommodate the requirements of the majority of the receivers. A prototype layered MPEG-2 multicast system, using HQA, has been successfully developed.