Due to the school in the recording, the production, dissemination and the difficulties in the management of teachers' classroom teaching video, this paper puts forward a set of teaching based on MediaSite streaming video production system. The article designs the MediaSite products based on teaching network platform of video streaming media system, proposes video tracking based on infrared technology and video technology of automatic focus. This system can largely simplify the teachers' classroom teaching a lot of works on the video production and management. It is convenient for students studying in class. The system can promote the informatization level of the school, too.