This was written by a friend, as it says it does not take account of menu's etc. but maybe someone could add to it ?
This guide will get you the Movie joined ONLY, without menus.
1. You have 2 folders... DVD 1 and DVD 2 (with two AUDIO_TS, and VIDEO_TS subfolders)
2. In DVD 2\VIDEO_TS, change VTS_01_x.VOB to VTS_01_00x.VOB where x is the number in the filename..so the change is to add 2 zeros before the number (x) IMPORTANT, make sure you rename the VTS_01_0.VOB to VTS_01_000.VOB
3. Open VOBEdit, and Open DVD 1\VIDEO_TS\VTS_01_1.VOB and look at the top of the left section (LBA)..there you should see a Navigation Pack VOB:? (usually its 1)..that number you have to remembr..we will need it later on...
4. Now open DVD 2\VIDEO_TS\VTS_01_001.VOB..one of the files you renamed
5. Click on the Edit menu..and then Join Clips...
6. Find a directory where you want to store you new Vob Sets (make sure you have al least 8-10 gigs free..depending on the size of the files)
7. It will ask you for a First VOB-ID...it is the one i said to remember..(usually its 1)..
8. You will have a new set of 4 VOB files
9. Rename those 00x files BACK to what they were except you have to rename them following the last number in the last new set vob filename...ex..from VTS_01_001.VOB to VTS_01_5.VOB (if the last new set vob was VTS_01_4.VOB)
10. Once you have renamed those files, cut and paste them into the new directory of the new set VOB files
11. Start IFOEdit and click on CreateIFOs
12. Keep every option in tact and select the new set's VTS_01_1.VOB file
13. Check 'Same as source' so that the new IFO and BUP files are written in the new set's directory
14. Test the movie in WinDVD or PowerDVD and voila! you did it
15. Optional (Compress the new set with IC7 and Burn with Nero)
I have used this exact guide to create a single DVDR that worked perfectly on my computer.
(Atomikk)
Hope this helps