A user input content video is presented on a user system. A user input content combination indicium associated with a combination function is presented. Responsive to detection of a user selection of the user input content combination indicium, the combination function is activated. The combination function detects selection, by a user, of a portion of the user input content video, and accesses a second user input content item. The portion of the user input content video is combined with the second user input content item, based on one or more combination options selected by the user, to create a combined user input content video.