A digital video recording interface card that can support up to 16 cameras for recording up to 16 subjects simultaneously. This is not a video tracking system (see LimeLight) but provides a video recording of experimental sessions. With the addition of the H39-16 DVR Interface Controller, the onset and duration of the recording can be controlled by Graphic State so that only the moments of interest during a session are recorded, greatly reducing the size of the video files. Each channel is independently controlled.