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Design and Implementation of High-quality Video Service with Adaptive Transport for Multi-party Collaborative Environments  

Han, Sang-Woo (광주과학기술원 정보통신공학과 네트워크미디어 연구실)
Kim, Jong-Won (광주과학기술원 정보통신공학과 네트워크미디어 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.31, no.1B, 2006 , pp. 26-38 More about this Journal
Abstract
To construct seamless collaborative environments, what all participants intent should be delivered, and visual elements such gesture, facial expression, and ambiance should be shared with all participants. In this paper, we propose high-quality video service to support DV(digital video) and HDV(high-definition DV) based on Access Grid(AG) which is a prevalent collaborative system. The proposed service is designed for employing versatile media tools and codecs with SDP(session description protocol) and SAP(session announcement protocol). We also design network-adaptive video transmission module to mitigate the impact of network fluctuation. This periodically monitors multicast performance and controls frame rate on sender side considering network condition. The experimental results over the test bed show that proposed service enhances quality of AG video service and provides seamless high-quality video transport by mitigating the impact of network fluctuation.
Keywords
Access Grid; high-quality video over IP; adaptive transport; multi-party video conference; advanced collaborative environments;
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