A video personalizing method, system, and non-transitory computer readable medium receiving user information for a viewer watching a first video, includes a video selection device configured to select a second video out of a plurality of videos stored in a video storing unit in order to increase a satisfaction of the viewer based on the user information collected while the viewer is watching the first video, where the satisfaction to the second video is observed and the selection by the video selection device is modified if a level of the satisfaction of the viewer towards the second video is less than a predetermined threshold value.