Video analyzer and computer program product

A computer program product embodied on a computer-readable non-transitory medium and comprising code that, when executed, causes a computer to perform as:

• a still image detector configured to detect a still image continuously displayed for a predetermined time in video frames of content comprising video data and audio data, and to group a segment in which substantially identical detected still images appear as a still image group;
• a characteristic detector configured to detect a monochrome video frame in the video frames of the content by a monochrome detector, or configured to detect a silent portion in which sound volume of the audio data in the content is lower than a first predetermined threshold by a silence detector;
• and
• a boundary position detector configured to detect a position where type of the content changes based on information on at least one of the monochrome video frame and the silent portion in the segment comprising the still image group and/or a segment without the still image group,
• wherein the still image detector is further configured to detect a plurality of still images that appear at different times, to compare coordinates of positions where the still images appear, and to group a segment in which still images with a difference between the positions of the still images that is equal to or smaller than a second predetermined threshold appear as the still image group, when the difference between the positions is equal to or smaller than the second predetermined threshold.