Video synthesizing apparatus and program

摘要

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 the displayed area of the child frame in conformity with the video content in the parent frame, as well as providing a video display apparatus etc. for displaying the child frame at an appropriate displayed position using the data for display. A video display apparatus 1 includes: decoders 101 and 103 for decoding two sets of video data; a synthesizer 105 for synthesizing the decoded videos to output; an input unit 108 for commanding display/non-display of the child frame; a processing controller 109 for controlling the operations of decoders 101 and 103 in accordance with the command; and a position designator 110 which receives the command and the data for display and time information and designates the displayed position of the child frame to the synthesizer 105. The position designator 110 determines the displayed position of the child-frame video in accordance with displayable time information of the child-frame video and information on the displayed area or displayable area depending on time, included in the data for display.

主权项

1. A video synthesizing apparatus which synthesizes a first video and a second video, wherein
a displayable period of the second video is designated within a playback time of the first video, and a playback of only the second video is started at an arbitrary point of time within the displayable period; is ended when the second video is completed or a playback time of the second video is past the displayable period; and is switchable between display and non-display at an arbitrary point of time during playing, comprising:
a designating means configured to:
receive metadata designated in a range of all time within the displayable period, said data including:
time information representing a plurality of time positions in the first video within the displayable period, wherein the plurality of time positions define each time at which a video frame of the first video is displayed, respectively, during the displayable period; anddisplayed area information representing a plurality of displayed positions where the second video is displayed over top of the first video at the time, wherein each of the plurality of displayed positions is a position over the first video that the second video is displayed at each of the plurality of time positions in the first video, respectively, anddesignate a displayed position where the second video is displayed at an arbitrary point of time, based on the metadata, wherein the metadata manages the time at which the displayed area of the second video is changed to a different position in the first video; anda synthesizing means configured to synthesize the second video over top of the designated displayed position within the first video, designated by the designating means.