To provide a technology of properly extracting a content of a partial interval desired by an editor by taking into account other information such as audio in addition to only a cut-point.
A flowchart for processing of extracting a topic in the first embodiment includes the steps of: allowing a user to select one event or more among a plurality of events including cuts of video and sound; acquiring predesignated designation start and designation end times denoting a time interval being an extraction object of the selected contents; selecting an event start time equal to or closest to the designation start time among event start times of the selected event temporally later than the designated start time for the start time of the extracted partial interval contents; and selecting an event end time equal to or closest to the designation end time among event end times of the selected event temporally before the designated end time for the end time of the extracted partial interval contents.
TANAKA KOICHI
FUSANO SHIGEMI
MASAMITSU MINEO
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