The present disclosure relates to a method of creating an original video into a short-time summary video. According to the present invention, a summary video is made by focusing on a dynamic object appearing in an original video, but a plurality of objects appearing in the same time period in the original video are made to appear together in the same time period in the summary video. Accordingly, when an event occurs, there is an advantage in that the relevance between objects in the event may be easily identified.