If i back up a dvd using shrink i get;
VOB - video & audio
IFO - which is the binary control file for the relevant VOB (these have DVDVIDEO-VTS in the header and can be read using IfoEdit. there is a link on
www.doom9.org)
BUP - these are backup copies of the IFO incase they get corrupt
They should be numbered as follows;
Volume in drive N is DATA
Volume Serial Number is C836-76A6
Directory of N:\ITALIAN_JOB\VIDEO_TS
05/07/2005 19:54 20,480 VIDEO_TS.BUP
05/07/2005 19:54 20,480 VIDEO_TS.IFO
05/07/2005 19:54 909,312 VIDEO_TS.VOB
05/07/2005 19:54 18,432 VTS_01_0.BUP
05/07/2005 19:54 18,432 VTS_01_0.IFO
05/07/2005 19:54 268,288 VTS_01_0.VOB
05/07/2005 19:54 10,240 VTS_01_1.VOB
05/07/2005 19:54 22,528 VTS_02_0.BUP
05/07/2005 19:54 22,528 VTS_02_0.IFO
05/07/2005 19:54 16,521,216 VTS_02_0.VOB
05/07/2005 19:56 387,725,312 VTS_02_1.VOB
05/07/2005 19:56 28,672 VTS_03_0.BUP
05/07/2005 19:56 28,672 VTS_03_0.IFO
05/07/2005 20:00 760,942,592 VTS_03_1.VOB
05/07/2005 20:00 79,872 VTS_04_0.BUP
05/07/2005 20:01 79,872 VTS_04_0.IFO
05/07/2005 20:01 103,512,064 VTS_04_0.VOB
05/07/2005 20:05 1,073,709,056 VTS_04_1.VOB
05/07/2005 20:08 1,073,709,056 VTS_04_2.VOB
05/07/2005 20:12 1,073,709,056 VTS_04_3.VOB
05/07/2005 20:15 1,073,709,056 VTS_04_4.VOB
05/07/2005 20:19 1,073,709,056 VTS_04_5.VOB
05/07/2005 20:19 18,653,184 VTS_04_6.VOB
05/07/2005 20:19 38,912 VTS_05_0.BUP
05/07/2005 20:19 38,912 VTS_05_0.IFO
05/07/2005 20:23 1,073,709,056 VTS_05_1.VOB
05/07/2005 20:25 343,238,656 VTS_05_2.VOB
05/07/2005 20:25 14,336 VTS_06_0.BUP
05/07/2005 20:25 14,336 VTS_06_0.IFO
05/07/2005 20:26 136,196,096 VTS_06_1.VOB
Each IFO/BUP should have a corresponding VOB (if you have asked to split files >1GB they you will have more). This the case with files above for VIDEO_04_x.VOB. In my example the film has not been "shrunk" as it is over 4.5GB so would not fit on a DVD-5/single layer blank disk.
If you wish to play the film of the hard disk from the beginning open VIDEO_TS.IFO which is the control file for the whole film. Opening any other .IFO will only play the part of the film that IFO knows about.