Video display system, video display method, and computer-readable medium

A video display method adapted to display a video on a terminal device, the video display method comprising the steps of:

• acquiring a video of an extraction area based on a designation of the extraction area within a video frame by the user, wherein a plurality of video frames are recorded by a video recording unit as a recorded video;
• performing a first control for displaying on the terminal device the video of the extraction area determined based on the designation by the user;
• detecting an event within the recorded video;
• determining, in a case where a plurality of events are detected in a video frame of the recorded video, whether an area ratio of an event area including areas corresponding to the plurality of events and the areas corresponding to the plurality of events matches a predetermined ratio condition;
• and
• performing a second control for switching of the video displayed on the terminal device from the video of the extraction area to (i) a video of the event area including the areas corresponding to the plurality of events in a case where the determining step determines that the area ratio matches the predetermined ratio condition, and to (ii) videos of at least two event areas corresponding to the plurality of events in a case where the determining step determines that the area ratio does not match the predetermined ratio condition, wherein the areas corresponding to the plurality of events are included within any of the at least two event areas, and wherein a position of the extraction area within the video frame based on the designation by the user is different from a position of the event area within a video frame of the recorded video, and wherein the extraction area and the event area are extracted from different frames of the recorded video recorded by the video recording unit.

An apparatus comprising:

• an acquisition unit configured to acquire a video of an extraction area based on a designation of the extraction area within a video frame by a user, wherein a plurality of video frames are recorded by a video recording unit as a recorded video;
• a first processing unit configured to perform a first control for displaying on a display unit the video of the extraction area determined based on the designation;
• a detection unit configured to detect an event within the recorded video;
• a determination unit configured to determine, in a case where a plurality of events are detected in a video frame of the recorded video, whether an area ratio of an event area including areas corresponding to the plurality of events and the areas corresponding to the plurality of events matches a predetermined ratio condition;
• and
• a second processing unit configured to perform a second control for switching of the video displayed on the display unit from the video of the extraction area to (i) a video of the event area including the areas corresponding to the plurality of events in a case where the determination unit determines that the area ratio matches the predetermined ratio condition, and to (ii) videos of at least two event areas corresponding to the plurality of events in a case where the determination unit determines that the area ratio does not match the predetermined ratio condition, wherein the areas corresponding to the plurality of events are included within any of the at least two event areas, and wherein a position of the extraction area within the video frame based on the designation by the user is different from a position of the event area within a video frame of the recorded video, and wherein the extraction area and the event area are extracted from different video frames of the recorded video.

A non-transitory computer-readable medium storing a program for causing a computer to execute a method of an apparatus, the method comprising:

• acquiring a video of an extraction area based on a designation of the extraction area within a video frame by the user, wherein a plurality of video frames are recorded by a video recording unit as a recorded video;
• performing a first control for displaying on a display unit the video of the extraction area determined based on the designation;
• detecting an event within the recorded video;
• determining, in a case where a plurality of events are detected in a video frame of the recorded video, whether an area ratio of an event area including areas corresponding to the plurality of events and the areas corresponding to the plurality of events matches a predetermined ratio condition;
• and
• performing a second control for switching of the video displayed on the display unit from the video of the extraction area to (i) a video of the event area including the areas corresponding to the plurality of events in a case where the determining step determines that the area ratio matches the predetermined ratio condition, and to (ii) videos of at least two event areas corresponding to the plurality of events in a case where the determining step determines that the area ratio does not match the predetermined ratio condition, wherein the areas corresponding to the plurality of events are included within any of the at least two event areas, and wherein a position of the extraction area within the video frame based on the designation by the user is different from a position of the event area within a video frame of the recorded video, and wherein the extraction area and the event area are extracted from different frames of the recorded video recorded by the video recording unit.