MTcast: robust and efficient p2p-based video delivery for heterogeneous users

Authors:
Tao Sun;Morihiko Tamai;Keiichi Yasumoto;Naoki Shibata;Minoru Ito;Masaaki Mori
Affiliations:
Graduate School of Information Science, Nara Institute of Science and Technology, Ikoma, Nara, Japan;Graduate School of Information Science, Nara Institute of Science and Technology, Ikoma, Nara, Japan;Graduate School of Information Science, Nara Institute of Science and Technology, Ikoma, Nara, Japan;Department of Information Processing and Management, Shiga University, Hikone, Shiga, Japan;Graduate School of Information Science, Nara Institute of Science and Technology, Ikoma, Nara, Japan;Department of Information Processing and Management, Shiga University, Hikone, Shiga, Japan
Venue:
OPODIS'05 Proceedings of the 9th international conference on Principles of Distributed Systems
Year:
2005

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Abstract

In this paper, we propose a new video delivery method called MTcast (Multiple Transcode based video multicast) which achieves efficient simultaneous video delivery to multiple users with different quality requirements by relying on user nodes to transcode and forward video to other user nodes. In MTcast, each user specifies a quality requirement for a video consisting of bitrate, picture size and frame rate based on the user's environmental resource limitation. All users can receive video with the specified quality (or near this quality) along a single delivery tree. The main characteristics of MTcast are in its scalability, high user satisfaction degree in received video quality, short startup latency and robustness against node failure. Through simulations, we have confirmed that MTcast can achieve much higher user satisfaction degree and robustness against node failure than the layered multicast method.