This example is NOT for newbies! If you need to change TITLE JUMP points using IfoEdit here is one way of doing it.


This information is taken from another forum http://forum.doom9.org/showthread.php?s=&threadid=38573. I thought it was important to pass along. Again I am just the Messenger for this one so please don't shoot me! 8)
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Original movie:
VTS_01 => The movie (7.5 GB, split with IfoEdit) (Title 1)
VTS_02 => Bonus scenes (1 GB) (T2)
VTS_03 => Crap, needs to be removed (T3)
VTS_04 => 7 blank frames, perhaps a placeholder (T4, T5, T6)
VTS_05, VTS_06 => Macromedia and the coders logos, won't keep either (T7, T8)

I have split TS1 to 2 disks. Space allows to put the whole TS2 onto both, so that's what I'll do.

I am working on Disk1 now. First of all, I added my favourite "Please insert Disk 2" m2v into video_ts. Next, I added a VMG_PGC in video_ts to still it and modified the PGC_1 (the only PGC) in VTS_01 so that it jumps to that VMG_PGC after the last cell is played. This all works like a charm, minus 2 IfoEdit bugs: last cell end address in the C_ADT table is one more than it should be, and the last cell end address in the PGC mirrors that value. After you decrease both, a player senses the cell post command, which I use to jump to the "Insert..." VMG PGC. Just sharing a tip, now on to my problem.

The problem is that VTS_01 contains a menu, which calls title 2 on the original disk. The title 2 (in VTS_02) is right there on the same disk. However, when I choose this "Bonus" menu option, the DVD player hangs (I am testing with PowerDVD 4.0), and IfoEdit says "Illegal Navigation". The menu itself is in VTS_01_00.VOB, VTSM_PGC #22, and its pre-commands are:

mov GPreg4, #3
if Gpreg10 == #0 then LinkPGN 1, [button == 2]
LinkPGN 1, [button == 1]

and post-commands:

mov Gpreg4, #31
LinkPGC 12

In PGC 12, there are only pre-commands and no cells:

mov GPreg1, SPreg<ASTN>
and Gpreg1, #3
mov GPreg2, SPreg<SPSTN>
and GPreg2, #67 ; decimal - kkm
JumpSS_VMGM 8

I replaced the last command with

JumpTT 2

since the VMGM8 merely did that (I deleted it). This did not help curing the illegal navigation error at all.

My *guess* is that the navigation command is actually is in the cell (another guess - nav pack?). Is it possible? If so, are there any tools that allow editing commands embedded into the cells?

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JumpTT cannot be used in a title menu to jump to another title! The right way was to jump to a VMG_PGC, containing only the JumpTT instruction - this way it jumped to another title perfectly.