According to another aspect of the disclosure, modifications are temporally made to all frames in {HEAD ~ a video stream}, selected frames in a video stream, or a single frame in {TAIL ~ a video stream} 
According to another aspect of the disclosure , modifications are temporally made to all frames in { HEAD ~ a video stream } , selected frames in a video stream , or a single frame in { TAIL ~ a video stream }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL