I want a video to play when the camera sees the target. I am using ARCamera with the standard Stones and Chips in Image Target (Database Load Behaviour). Removed Default Trackable Event Handler and put Trackable Event Handler. Using video prefab as a child of Image Target and have the path set to my own video. When I try to play it the log says "Could not initialize video player UnityEngine.Debug:log(Object)" and "Trackable stones lost UnityEngine.Debug:log(Object)" and gives a gray screen. Webcam doesn't seem to be activated when I click play but computer indicates that it is turned on. Webcam isn't broken. When I push to my android device it gives a gray screen.