Video Control Software Module carries out automatic video tracking when cooperating with camera and video switch unit. Set up video matrix: set input/output channels for computer, camera and other video apparatus according to the connections between video equipment and video switch unit. The configuration can be sent to the main unit for synchronization. Video switch: switch among different input and output video signals according to the video matrix. Camera preset: cooperating with microphone management module to set and adjust the camera preset for each seat/microphone and to transmit speaker’s video picture simultaneously to a hall display. Camera control: preset the panorama of the conference venue.