The Mobile Video Surveillance System Based On Wireless LAN Chunhua Wang Zheng Mao Yu Zhang Hailong Luo College of Electronic Information & Control Engineering Beijing University of Technology Beijing, PRC 100022 springwang@emails.bjut.edu.cn Abstract This paper proposes a design scheme of mobile video surveillance system based on wireless LAN (WLAN), the overall system architecture and key technologies introduced. The operating principle, process and realization of several modules are described in detail, such as video capturing, video reproducing, video wireless transmitting, video playing on the mobile terminals PDA, etc. IP multicast and MPEG-4 codec techniques are used too, so the system can realize real-time video transmission in the way of from one point to many. Keywords: Wireless LAN; Video surveillance; Video data transmission; IP multicast