{HEAD ~ Modifications} can be spatially made to an entire video frame, one or more selected regions of a video frame, or one or more individual pixels of {TAIL ~ a video frame} 
{ HEAD ~ Modifications } can be spatially made to an entire video frame , one or more selected regions of a video frame , or one or more individual pixels of { TAIL ~ a video frame }
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL