| 摘要 |
A BD-ROM playback apparatus for selecting and playing back one among text subtitle streams together with a moving picture. PSR 48 - 61 store Decode Capability flags whose set values indicate, for each language, whether or not a decode capability is present. Procedure executing unit 20 judges whether each text subtitle stream can be displayed, by referring to the set values of the flags. Stream selection unit 17 selects a text subtitle stream judged as being able to be decoded.
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