1. A method for generating a suppression key for overlaying of a virtual graphic onto a video to generate a video scene, comprising: (a) receiving a region of interest of the video containing a dynamic object; (b) determining a presence of the dynamic object in the region of interest; and (c) providing a suppression key in response to the presence of a dynamic object in the region, the suppression key comprising a plurality of suppression regions, each of the suppression regions corresponding to a region of the dynamic object, pixels of each of the suppression regions having a value corresponding to a characteristic of the corresponding region of the dynamic object.