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