I am new to processing. so dont know where to put this topic..Now I am working on a project in which what I want , when the webcam start capturing, then some movement (any movement; like some one is coming in front of the screen or some shadow, or even a single hand can enter) in the display window then another video file should start automatically within capturing. (this video file should be  .mov file ). when no movement occurs then nothing should be done.