What’s on a DVD?

Aug 03rd, 2010 by dvdxplayer 2,262 views |1 Comments

What exactly is on a DVD disc? What are VOB, IFO and BUP files? All this will be explained here.

When you access the DVD drive you’ll see at least 2 directories:

22.08.2000 03:20 <DIR> AUDIO_TS
22.08.2000 05:53 <DIR> VIDEO_TS

AUDIO_TS is used for DVD Audio and contains the audio files, whereas VIDEO_TS is used to store all data for the movie. There might be more directories which contain DVD-ROM features for your PC.

Now let’s have a look at the VIDEO_TS directory:

22.08.2000 05:53 <DIR> .
22.08.2000 03:20 <DIR> ..
22.08.2000 05:23 12′288 VIDEO_TS.BUP
22.08.2000 05:23 12′288 VIDEO_TS.IFO
22.08.2000 05:23 333′824 VIDEO_TS.VOB
22.08.2000 05:23 59′392 VTS_01_0.BUP
22.08.2000 05:23 59′392 VTS_01_0.IFO
22.08.2000 05:23 8′192 VTS_01_0.VOB
22.08.2000 05:27 1′073′643′520 VTS_01_1.VOB
22.08.2000 05:31 1′073′631′232 VTS_01_2.VOB
22.08.2000 05:32 104′785′920 VTS_01_3.VOB
22.08.2000 05:32 88′064 VTS_02_0.BUP
22.08.2000 05:32 88′064 VTS_02_0.IFO
22.08.2000 05:32 59′379′712 VTS_02_0.VOB
22.08.2000 05:36 1′073′436′672 VTS_02_1.VOB
22.08.2000 05:40 1′073′549′312 VTS_02_2.VOB
22.08.2000 05:45 1′073′502′208 VTS_02_3.VOB
22.08.2000 05:49 1′073′371′136 VTS_02_4.VOB
22.08.2000 05:53 1′073′555′456 VTS_02_5.VOB
22.08.2000 05:57 810′952′704 VTS_02_6.VOB

As you can see there’s 3 types of files on a DVD: .VOB, .IFO and .BUP:

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