The disclosed embodiments relate to a multimedia data encoding/decoding method and apparatus. In some aspects, a decoding method comprises receiving multimedia data which comprises a media area, a media information area, and a menu description area including description data for displaying a menu; extracting the description data from the multimedia data; rendering a menu using the extracted description data; and decoding media data extracted from the media area based on the menu, wherein the media area, the media information area and the menu description area are incorporated into one file, the multimedia data further comprises usage metadata in another file, the usage metadata describes and stores a user's action on the media data in the media area, and the decoding comprises decoding the media data from the point of interruption using the usage metadata. Thus, a time taken to process and transmit the multimedia data can be reduced.