Recording medium, playback method, and playback device
摘要
說明書
A playback method according to an aspect of the present disclosure is a playback method of reading out and playing 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 storing 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 storing 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 method includes: reading out and playing 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 reading out and playing 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.
Part of the second playback control information may have a common data structure with the first playback control information.
