Design And Implementation Of Video Montoring Client Based On Symbian Smart Phone

Along with the development of economy and the improvement of people's living standard, the video monitoring has becomed hot topics in social life. Now, most of video monitors are based on the web server, the terminal of video monitoring system is PC, it realizes remote video monitoring through Internet. Because the restriction of Internet accsss point, the requirement of getting the information of video monitor anytime, anywhere can not be satisfied. The rapid development of mobile communication network and the technology of mobile terminal create the condition to resolve this issue.This research topic combines the traditional video monitoring technology with mobile multimedia services to construct the mobile video monitoring system based on smart mobile phone. At present, mobile communication network covers a wide scope, using mobile phone as the terminal of video monitoring system will really realize video monitoring anytime, anywhere. Meanwhile, as the most popular mobile terminal device, mobile phone is beneficial for individual market promotion of video monitoring system.This paper first introduces the conditions, advantages, development and status of mobile video monitoring system, the key technologies of video monitoring system are also disscussed. Selecting to use the smart phone used Symbian OS as the terminal of mobile video monitoring system by comparative analysis.The mobile phone software development based on Symbian OS and the specific mechanisms were introduced. Through the research of mobile streaming media protocol such as RTSP, RTP/RTCP, SDP, this paper puts forward a design of video monitoring client software architecture based on the Symbian smart phone, and gives the detailed description of the modules design and implementation of the client softeware, mainly includes the design and implementation of UI, session control, network transmission, video decoding and displaying, and remote control.This paper also has the reaseach on the realization of MPEG-4 video decoding in the mobile phone, analyzes the MPEG-4 bit stream and gives the flow chart of decoder, finally realizes the MPEG-4 decoder on Symbian platform. The optimization methods of decoder are disscussed, two IDCT algorithms are contrasted. The decoder is optimized and tested on the mobile phone. The optimization work is achieved a certain effect. The performance of client software is tested on the mobile phone, the core functions of video monitoring client software such as real-time video moitoring and remote control are successfully implemented, and video decoder works well. This paper also can be a reference to those people who want to develop streaming video on the Symbian smart phone.