Reproducing device for reproducing subtitle data having transparency information and corresponding reproducing method, program, and data structure

摘要

A reproducing device includes: a reproducing unit to reproduce subtitle data in accordance with subtitle data included in a stream along with including moving picture data; wherein, with a section where display of the subtitle is constant as the display units of the subtitle, the subtitle data is classified into a display set which is the subtitle data in the display units; and the display set includes number-of-subtitles information representing the number of the subtitles to be displayed, and transparency information representing the transparency of the subtitles; and a display set during a non-display section which hides the subtitle includes the number-of-subtitles information representing that the number of the subtitles is 0, or the transparency information representing that the subtitle is completely transparent; and the reproducing unit reproduces 0 of the subtitles, or the subtitle that is completely transparent, in accordance with a display set during a non-display section.