Security video searching device, systems, and methods determine behavior associated with each of a plurality of video clips captured by security devices, find video clips that include behavior indicative of search characteristics, and send the found video clips to a user. A search engine analyzes each of the plurality of video clips to determine behavior associated with the video clip and finds ones of the plurality of video clips where the behavior matches the search characteristics defined by of the user. Previously determined behavioral patterns associated with motion signals generated by the security devices may also be used to determine behavior within the video clips.