A request from a plurality of mobile devices to join a group may be received. A number of the mobile devices that have joined the group may be identified. Furthermore, a preliminary image may be selected based on the number of the mobile devices that have joined the group and portions of the preliminary image may be transmitted to the mobile devices. An indication of an arrangement of the mobile devices based on the transmitted portions of the preliminary image may be received. In response to receiving the indication of the arrangement of the mobile devices, a different video item of the video items representing the main video may be transmitted to each of the mobile devices according to the arrangement of the mobile devices.