The invention provides data for display on the display area for a child frame when the child frame is synthesized and displayed on the parent frame in picture in picture playback in order to give {HEAD ~ the displayed area} of {TAIL ~ the child frame} in conformity with the video content in the parent frame, as well as providing a video display apparatus etc 
of
The invention provides data for display on the display area for a child frame when the child frame is synthesized and displayed on the parent frame in picture in picture playback in order to give { HEAD ~ the displayed area } of { TAIL ~ the child frame } in conformity with the video content in the parent frame , as well as providing a video display apparatus etc
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