1. An event importance adjustment device, comprising: a digest scenario information memory device that stores and manages digest scenario information indicative of: a) an event extraction condition, b) an extraction order, c) an event importance adjustment point, and d) a scenario pattern including a plurality of video sections within a course of video contents, the video sections determined based on the video contents, wherein a)-d) are specific to presentation of the course of the video contents; a scenario importance adjusting processor that: e) receives event information with importance containing events each indicative of a phenomenon in the video contents and the importance of the event as well as situation information indicative of a situation of the video contents, f) extracts an appropriate event based on the digest scenario information, the appropriate event being extracted from a video section based on the scenario pattern, and g) adjusts the importance of the event, the importance of the appropriate event being adjusted based on the video section from which the appropriate event was extracted, an event correlation pattern information storing unit that manages an event correlation pattern table indicative of a trigger event which triggers start of processing, a correlation event which is associated with the trigger event, and an importance adjustment point of the correlation event; and an event correlation importance adjusting unit that extracts an appropriate correlation event based on the event correlation pattern table if the event adjusted by the scenario importance adjusting unit is the trigger event, and adjusts the importance of the correlation event.