Recording medium, playback method, and playback device

A playback device that plays a content, the playback device comprising:

• a management information acquirer;
• and
• a video player,
• wherein the management information acquirer acquires first management information that stores first playback control information and third management information that stores third playback control information;
• the first playback control information specifies that a video stream of a high-luminance range which is a broader luminance range than a standard-luminance range is to be played,
• the third playback control information specifies that an enhanced video stream for extending the high-luminance range is to be composited on and to be played with the video stream of the high-luminance range,
• the video player acquires and plays the video stream of the high-luminance range based on the first playback control information in a case of playing the content as the high-luminance range, and
• the video player acquires and plays the video stream of the high-luminance range based on the first playback control information and also plays the enhanced video stream to be composited on the video stream of the high-luminance range based on the third playback control information in a case of playing the content with a more extended luminance range than the high-luminance range.

A playback device that plays a content, the playback device comprising:

• a management information acquirer;
• and
• a video player,
• wherein the management information acquirer acquires first management information that stores first playback control information and third management information that stores third playback control information;
• the first playback control information specifies that a video stream of a standard-luminance range is to be played,
• the third playback control information specifies that an enhanced video stream for extending the standard-luminance range is to be composited on and to be played with the video stream of the standard-luminance range,
• the video player acquires and plays the video stream of the standard-luminance range based on the first playback control information in a case of playing the content as the standard-luminance range, and
• the video player acquires and plays the video stream of the standard-luminance range based on the first playback control information and also plays the enhanced video stream to be composited on the video stream of the standard-luminance range based on the third playback control information in a case of playing the content with a more extended luminance range than the standard-luminance range.