Distribution system, method for controlling distribution system, and computer program

A distribution system (100) for distributing audiovisual video to respective user terminals of a plurality of users, which are viewers, is provided with: an operation reception means (111) for receiving user operations input from respective user terminals (20); a selection unit (131) that selects at least one piece of distribution data from a distribution data group including a plurality of pieces of distribution data in accordance with a user operation; and a data distribution unit (132) that distributes the distribution data selected by the selection unit to at least the user terminal to which the user operation has been input. 将视听影像分发到作为视听者的多个用户各自的用户终端的分发系统(100)具备：操作受理单元(111)，其受理从各用户终端(20)输入的用户操作；选择单元(131)，其与用户操作对应地从包含多个分发数据的分发数据组中选择至少一个分发数据；以及数据分发单元(132)，其至少对被输入了用户操作的用户终端分发由选择单元选择出的分发数据。