The popularization of video-viewing systems enables both adults and children to continuously watch countless video clips. However, such extended video viewing might cause health problems, particularly for children. Rule-making tendencies are weaker for video-viewing systems than they are for television programming. Children struggle with self-motivated video-viewing stops because of attractive, rich clips. In this study, we propose a video recommendation system that arranges video clips based on a pre-set time, to support self-motivated video-viewing stops. Our proposed system enables parents to limit video-viewing time in advance and provides video clips that are arranged to finish exactly at a pre-set time. We conducted two experiments. The first experiment targeted adults to confirm the effectiveness of our approach. Our results from the first experiment suggest that our proposed system creates a good video-viewing ending time and could support self-motivated video-viewing stops. Our second experiment targeted children and aimed to obtain children's reactions to the use of our developed system, as well as feedback from their parents. We observed the children's self-motivated video-viewing stops. In addition, we obtained good impressions of the system from parents.