Yes

A DVD uses VOB files as containers that hold the video and audio data and IFO (InFOrmation files) store the navigation data. The BUP is a BackUP of the IFO files, and must be on the discs. The discs are composed of a VIDEO_TS folder and an AUDIO_TS folder, although the audio folder is unused. Both the audio and video are stored in the VOB files that are present in the VIDEO_TS folder.


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