An online system presents a video from a third party system based on a video view value generate by the online system. Based on a target audience specification from the third party system, the online system selects a plurality of online system users as the audience of the video. The online system presents the video the selected users in a duration of time equal to a video presentation period received from the third party system. A play of the video by a selected user constitutes a historical view. The online system generates a video view value for the video based on historical views of the video by the selected users. The online system further applies the generated video view value for pacing delivery of the video by the online system.