The present invention displays subtitles in a language desired by a user in a desired format. A text data decoder 121 decodes text subtitle data, supplies a character object to a character object buffer 122, and supplies attribute data to an attribute data buffer 123. The attribute data stored in the attribute data buffer 123 is changed on the basis of an operation input from the user. A font rasterizer 124 converts the character object into raster data on the basis of attribute specification read from the attribute data buffer 123 and acquired font data, and outputs the raster data. By detecting each character object bearing a bookmark on the basis of the attribute and using a bookmark buffer 125, character objects bearing the same bookmark ID are prevented from being repeatedly rasterized. The present invention is applicable to a playback apparatus.