These configurations, when a child frame video is synthesized for its display on the parent frame video in {HEAD ~ picture} in picture, enable the child frame video to be displayed for {TAIL ~ playback} by displaying it in the suitable displayed position 
These configurations , when a child frame video is synthesized for its display on the parent frame video in { HEAD ~ picture } in picture , enable the child frame video to be displayed for { TAIL ~ playback } by displaying it in the suitable displayed position
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH