displayed area information representing a displayed area of the second video in the first video when the second video is switched to displaying at the time, and designate a position in the first video in which {HEAD ~ the second video} is displayed when {TAIL ~ the second video} is displayed at the arbitrary point of time based on the metadata; and 
displayed area information representing a displayed area of the second video in the first video when the second video is switched to displaying at the time , and designate a position in the first video in which { HEAD ~ the second video } is displayed when { TAIL ~ the second video } is displayed at the arbitrary point of time based on the metadata ; and
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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH