What BUP, IFO, VOB Extensions mean in a DVD?

[Vishal Gupta]

Guys!
Today I played a Movie DVD in my Samsung DVD Drive.
When I tried to copy the files from DVD to computer, I found two folders in that DVD AUDIO_TS and VIDEO_TS.
The folder AUDIO_TS was empty and VIDEO_TS contained 20 files:

VIDEO_TS.BUP
VIDEO_TS.IFO
VIDEO_TS.VOB
VTS_01_0.BUP
VTS_01_0.IFO
VTS_01_1.VOB
VTS_01_2.VOB
VTS_02_0.BUP
VTS_02_0.IFO
VTS_02_1.VOB
VTS_03_0.BUP
VTS_03_0.IFO
VTS_03_1.VOB
VTS_03_2.VOB
VTS_04_0.BUP
VTS_04_0.IFO
VTS_04_1.VOB
VTS_05_0.BUP
VTS_05_0.IFO
VTS_05_1.VOB

Now what they stands for?
I mean which files actually contain movies and rest r present for what?
I liked 3 movie in the MENU of DVD, so I copied VTS_03_0.BUP ,VTS_03_0.IFO, VTS_03_1.VOB, VTS_03_2.VOB files and they r working perfectly.
But actually in those 4 files which r main movie files and which can be deleted safely?
pls tell me.
thnx...

 

[QwertyManiac]

Well, the other files include things such as Subtitles, Movie Info, Stream Info and things like this...

Also it is used for menu indexing and sorts like that, I dont think deleting wud be a good worthy try, coz u might endup losin some features...

 

[ishaan]

see this

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

 

[Vishal Gupta]

thnx ishaan!
That was very informative...

 

[ishaan]

yw...it wz just a google away