A recording/reproducing device includes a captured data acquisition unit that acquires captured data, an event detection unit that detects occurrence of an event on a movable object, a recording control unit, a display unit that displays a video contained in event recording data, a line-of-sight detection unit, and a reproduction control unit. The recording control unit stores, as event recording data, the captured data for a predetermined period from at least part of the captured data on the basis of detection of an event. The line-of-sight detection unit detects that a user's line of sight is pointing towards the display unit. The reproduction control unit starts reproduction of the event recording data when it is detected that the user's line of sight is pointing towards the display unit within a predetermined period after detection of the event.