A development of Local Area Tele-Conference Network

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In recent days, the environment of communication is developed. In such environment, when multimedia contents such as video and audio data are transmitted, it seemed to be able to realize pleasant environment of communications to encode or transmit adaptively to resources such as terminal or network. In response to this situation, we previously developed a software-based real-time MPEG (Moving Picture Experts Group) system for streaming live video. We are now implementing this system in our laboratory for use as a tele-conference system. For this system, we proposed a VOP decision-making algorithm that can adaptively choose the arrangement of VOPs (Video Object Planes) according to the CPU power of a terminal. When live movies from video cameras are streamed in real-time environments, low latency is necessary so that users are not bothered by system latency. In this paper, we describe the outline of the local area tele-conference network and we report how to estimate the cost for time of encoding and communication when transmitting MPEG-4 objects in our system.

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