Quick backgroound...
Captured VHS as mpg into Studio 8 using Dazzle DVC 150.
Did NOT do scene selection. Broke it into as few scenes as possible to remove a little lousy footage. It ended up about 57 minutes long.
Added a menu with 8 Chapter points. Selected make movie which churned for a while, created the VOB and IFO files. On playback however, several large chunks of video were missing. When I would go to a chapter it would start mysteriously near the end of it. So, after burning coasters (once using Studio 8 and once DVD Decrypter) I decided to enter the realm of many of the users of this board and dive into the guts of the thing.
This alphabet soup is killing me but here goes...
Using IfoEdit v0.95 on VTS_01_0.IFO in the VTS_PGC_1 section I noticed that the entry point sectors for successive cells did not pick up right where the last sector of the previous cell left off (+1). I changed the values and low and behold it now doesn't skip the video. The problem is now that the playback times of a couple of the cells are much larger than they should be.... (See data below which is before editing the bad entry point sectors)...
PGC (program chain):
[00000002] Number of Programs 8
[00000003] Number of Cells 8
[00000004] Playback time 00:56:50.24 / 30 fps

PGC Program Map:
[0000010c] Program_1: Entry cell number 1
[0000010d] Program_2: Entry cell number 2
...
[00000113] Program_8: Entry cell number 8
Cell Playback:

Cell_1: playback time (BCD) 465127
playback time (hh:mms.frame) 00:07:18.27 / 30 fps
Cell_1: entry point sector 0
Cell_1: first ILVU VOBU end sector 0
Cell_1: start sector of last VOBU 207164
Cell_1: last sector of this cell 207590

Rest condensed...
Cell 2: 53321, 00:08:22.21 / 30 fps, 443482, 0, 445986, 446364
Cell 3 : 1394897, 00:15:48.11 / 30 fps, 446365, 0, 600168, 600475
Cell 4 : 338134, 00:05:28.16 / 30 fps, 896704, 0, 896482, 896896
Cell 5 : 1061575, 00:10:32.07 / 30 fps, 1154940, 0, 1154684, 1154939
Cell 6 : 3231956, 00:31:50.14 / 30 fps, 1154940, 0, 1412955, 1413316
Cell 7 : 594117, 00:09:10.05 / 30 fps, 1413317, 0, 1561855, 1562098
Cell 8 : 4260313, 00:41:01.19 / 30 fps, 1562099, 0, 1599997, 1600280

I know I can update the BCD time for cells 6 and 8 which are much longer than they should be. How can I find the exact number of frames that are really in these cells?
I made them lower just fooling around but IfoEdit's preview screen seemed to jump to the wrong VOB file (The movie was broken into 4 files.) when I panned back and forth over the entire cell. Is there something else I need to change?

P.S. In the VTS_TMAPTI section there are 4 entries that say something like:
Discontinuity Entry 438: at sector 206872
Do these mark the ends of each of the VOB files or is there so problem?

Thanks much for any help you can provide a struggling newbie!
KenS