{HEAD ~ Modifications} can be temporally made to {TAIL ~ all frames} in a video stream, selected frames in a video stream, or a single frame in a video stream 
temporally made to
{ HEAD ~ Modifications } can be temporally made to { TAIL ~ all frames } in a video stream , selected frames in a video stream , or a single frame in a video stream
HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL 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