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A remote video monitoring system is proposed in this paper. The system takes Samsung Corporation's ARM9 S3C2440AL processor as hardware core, and adopts embedded Linux as the operating system. Ordinary 300000 pixels USB camera is used as video acquisition devices. The system has the functions of video signal acquisition, compression, transmission over the Internet for remote video monitoring. The process of the Linux operating system being transplanted on ARM is introduced and the methods of video signal acquisition and MPEG-4 compression are discussed in detail. The system experimental result shows that it responding rapidly, operate efficiently and steadily and can meet system requirement.