The present invention relates to a data structure for managing video data
and additional content data recorded on a recording medium. A recording
medium having the data structure for managing video and its additional
content data in accordance with the present invention comprises: a
navigation area storing at least one navigation file, the navigation file
including at least one navigation command group, at least one navigation
command group including at least one navigation command for managing
reproduction of additional content data to be reproduced with main data
recorded on the recording medium, at least one command group indicating
at least one playlist to reproduce, the at least one playlist including
reproducing information related with the additional content data.