An information processing device accepts an instruction to set a buffer size of a receiving buffer in which segment data obtained by dividing content data including at least one of video and audio is recorded, determines, among a plurality of pieces of segment data to be acquired, the segment data to be acquired based on a free capacity of the receiving buffer of the buffer size relating to the setting instruction, acquires the segment data to be acquired from an external device, and records the acquired segment data in the receiving buffer.