A reproduction device comprising: a reading unit configured to read second coded data from a recording medium recording the second coded data between first coded data of a standard video which is a video in a first brightness range and the second coded data of an extended video which is a video in a second brightness range broader than the first brightness range; a first acquisition unit configured to perform communication with a display device capable of displaying the extended video and acquire identification information of the display device; a second acquisition unit configured to acquire brightness adjustment data according to a specification of the display device used to adjust brightness of the extended video based on the identification information of the display device; a decoding unit configured to decode the second coded data; an adjustment unit configured to adjust the brightness of the extended video obtained by decoding the second coded data based on the brightness adjustment data; and an output unit configured to output data of the extended video after the brightness adjustment together with brightness characteristic information representing a characteristic of the brightness of the extended video to the display device; wherein the second acquisition unit acquires the brightness adjustment data from a server connected through a network, wherein the reading unit reads identification information of the recording medium from the recording medium, wherein the recording medium is an optical disc, wherein the first acquisition unit acquires specification information indicating the specification of the display device from the display device, and wherein the second acquisition unit transmits, to the server, a request for the brightness adjustment data, the request comprising the identification information of the recording medium, the identification information of the display device, and the specification information of the display device, and the second acquisition unit acquires, from the server, the brightness adjustment data according to the specification of the display device indicated by the specification information among the brightness adjustment data managed in association with the identification information of the recording medium in the server and the identification information. a reading unit configured to read second coded data from a recording medium recording the second coded data between first coded data of a standard video which is a video in a first brightness range and the second coded data of an extended video which is a video in a second brightness range broader than the first brightness range; a first acquisition unit configured to perform communication with a display device capable of displaying the extended video and acquire identification information of the display device; a second acquisition unit configured to acquire brightness adjustment data according to a specification of the display device used to adjust brightness of the extended video based on the identification information of the display device; a decoding unit configured to decode the second coded data; an adjustment unit configured to adjust the brightness of the extended video obtained by decoding the second coded data based on the brightness adjustment data; and an output unit configured to output data of the extended video after the brightness adjustment together with brightness characteristic information representing a characteristic of the brightness of the extended video to the display device; wherein the second acquisition unit acquires the brightness adjustment data from a server connected through a network, wherein the reading unit reads identification information of the recording medium from the recording medium, wherein the recording medium is an optical disc, wherein the first acquisition unit acquires specification information indicating the specification of the display device from the display device, and wherein the second acquisition unit transmits, to the server, a request for the brightness adjustment data, the request comprising the identification information of the recording medium, the identification information of the display device, and the specification information of the display device, and the second acquisition unit acquires, from the server, the brightness adjustment data according to the specification of the display device indicated by the specification information among the brightness adjustment data managed in association with the identification information of the recording medium in the server and the identification information.