Multiple titles, same DVD - safe to delete one?

[MorbidPenguin]

Working on Bangkok Dangerous. I've probably noticed this in other DVDs but never paid much attention.

It has two main VTSTs, namely

VTST 1,1 TTN 1 Title 1
VTST 1,2 TTN 2 Title 2

Both are the same length and contain the main movie. They appear to be exactly the same.

http://images.dr3vil.com//files3/245/2009-01-22_145728.jpg

Is it safe to delete one or are they both there for a purpose?
Thanks.

[Alex_ander]

Most likely they use the same video blocks, so if you deleted one, that wouldn't save you space. Also deleting a title usually needs navigation adjustment and title re-mapping, only then it's safe.

[MorbidPenguin]

Cool, thanks.

Actually, I just looked and found that it's just over 4gb, so it'll fit on a DVD+R no problem.

[blutach]

This is known as multi-story authoring. Sometimes, the 2nd title has a slightly different part, or different nav commands, as Alex_ander alluded to. Lave it intact unless Remove Useless Stuff says it can go.

Regards