Dvd

DVD Anatomy

/dev/cdrom
   - VIDEO_TS			## Video data
	- AUDIO_TS			## Audio data

VIDEO_TS

/dev/cdrom
   +- VIDEO_TS
        +- VIDEO_TS.BUP
        +- VIDEO_TS.IFO
        +- VIDEO_TS.VOB
        |  
        +- VTS_01_0.BUP
        +- VTS_01_0.IFO
        +- VTS_01_0.VOB
        +-   VTS_01_1.VOB
        +-   VTS_01_2.VOB
        +-   VTS_01_3.VOB
        |  
        +- VTS_02_0.BUP
        +- VTS_02_0.IFO
        +- VTS_02_0.VOB
        +-   VTS_02_1.VOB
        +-   VTS_02_2.VOB
        +-   VTS_02_3.VOB
        +-   VTS_02_4.VOB
        +-   VTS_02_5.VOB
        +-   VTS_02_6.VOB

VOB:
Video/Audio/Subtitle Streams multiplexed together (encrypted). Video is MPEG-2, Audio is AC3,Linear PCM, MPEG2 multichannel, MPEG layer2. The maximum size of a VOB is 1GB.

IFO:
Chapter Information (start/end), Locations of various files (un-encrypted)

BUP:
Backups of IFO files. (un-encrypted)

VIDEO_TS.*			## First item played when DVD is inserted. Copyright notice, menu, trailers, etc.

VTS_01_*				## Each 'title' in the DVD can have up to 10x .VBS files (0-9)

Sources

http://www.doom9.org/index.html?/dvd-structure.htm