Video search algorithm using the motion vectors map

A use of 3D motion vector map for a video story search is provided herein. In a method of a video story search, parsing processes are respectively performed on data stream of an input search video file and a plurality of video files dedicated to be searched, and then a plurality of motion vectors are obtained accordingly. A plurality of corresponding motor vector maps are generated in time domain. A correlation result is generated according to the motion vector map of the input search video file and the motion vector maps of the plurality of video files, and then a search result is obtained based on the correlation result.