Recording medium, playback method, and playback device
摘要
說明書
A playback device according to an aspect of the present disclosure is a playback device that reads out and plays content from a recording medium in which is recorded a video stream of standard-luminance range, and a video stream of high-luminance range that is a broader luminance range than the standard-luminance range, which are used selectively in accordance with a playback environment, a subtitle stream of the standard-luminance range, and a subtitle stream of the high-luminance range, which are used selectively in accordance with the playback environment, and a playlist file storing playback control information of content, the playlist file including a management region where the playback control information relating to a main stream is stored, and an extended region. The management region stores first playback control information specifying that a video stream of the high-luminance range and a subtitle stream of the high-luminance range are to be played in combination. The extended region stores second playback control information specifying that a video stream of the standard-luminance range and a subtitle stream of the standard-luminance range are to be played in combination. The playback device includes: a video playback unit that (1) reads out and plays a video stream of the high-luminance range and a subtitle stream of the high-luminance range, based on the first playback control information, in a case of playing the content as a content of the high-luminance range, and (2) reads out and plays a video stream of the standard-luminance range and a subtitle stream of the standard-luminance range, based on the second playback control information, in a case of playing the content as a content of the standard-luminance range.
