GfD: how do I jump to chapter 1?

[AlanHK]

In GuiforDVDAuthor I have several titles on the Main menu.

The "Action" for, eg, the 1st title is
jump titleset 1 menu;

I'd like to have some titles start playing at the first chapter point, not the zero.

I guessed (for the 3rd title):
jump title 3 chapter 2;

But after 30 minutes of muxing, I discover this is wrong, with the error message finally

STAT: VOBU 1 at 0MB, 1 PGCS
INFO: Generating VMGM with the following video attributes:
INFO: MPEG version: mpeg2
INFO: TV standard: pal
INFO: Aspect ratio: 4:3
INFO: Resolution: 720x576

ERR:  That form of jumping is not allowed
ERR:  That form of jumping is not allowed
ERR:  That form of jumping is not allowed
ERR:  That form of jumping is not allowed
STAT: fixed 1 VOBUS                         
ERR:  That form of jumping is not allowed
ERR:  in VMGM pgc 0, button MMB3

If this is possible, how do I do it?

[borax]

Unfortunately a jump from the main menu (VMGM domain) to a specific chapter is not allowed by the DVD spec. There are several possibilities to circumvent this problem. With dvdauthor as engine, the most easy possibility is changing the pre command of the titlesetmenu(s).
Assuming that your default settings are: 'Use titlesets' = on and 'Start action for Titlesets' = 'Play movie', the following steps are necessary:
Add the movies like usual (do not change the action).
Load the titlesetmenu for the movie where you want to change the 'starting' chapter. Design your chapter menu (add at least one button, except you don't want a chapter menu at all). Then right click on the menu background and load the 'Menu Properties' dialog.
Click on 'Advanced Pre/Post Command Editor'
Click on 'Calc Standard' for the Pre Commands
You should find the 'default pre command' like:

button=1024; if (g1 gt 0) jump title 1 chapter 1;

Change the line to:

button=1024; if (g1 gt 0) jump title 1 chapter 2;

Save the changes with OK.
Do the same for each movie where you want to change the 'starting' chapter.

[AlanHK]

Thanks, I'll try that.

Sometimes it's simpler just to skip past crap than trying to resync video, subtitles, etc.