how to allow button actions during dvd slideshow?

[caver456]

The ultimate goal is to have a dvd slideshow playing that performs a given action when you hit a given button on the dvd remote at any time during the slideshow. These are landscape pictures, and I'd like to be able to bring up a topo map of where the current shot was taken, at any time during the slideshow. How the audio plays with this is secondary, maybe normally-playing background audio during the slideshow which gets halted while the topo is displayed and resumes when you are done with the topo (when the slideshow resumes). Any ideas? I'm using linux, and pretty new to dvd. I have been able to get a normal slideshow with audio using dvdslideshow, which gives a vob, then dvdauthor etc to get a working dvd - just looking to add this feature ('interruptable slideshow'?) if possible.
Thanks
-Tom

[guns1inger]

To do what you want you either need to be able to create a true branching DVD - like the Matrix 'White Rabbit' feature, which is beyond the capability of most consumer packages, or as a series of menu pages with hidden buttons.

Branching would give you everything you are after, including audio that interrupts and resumes, whereas the menu approach would result in audio that restarted when you returned to a menu or shifted image.

I don't know of any Linux based software that can do branching in the manner required. On Windows you would probably need Scenarist, a $20000+ package.

[caver456]

Thanks - I'll snoop around. 'branching' is the term in question? Do you know where I could read up on 'branching'? Just spent a few minutes searching with no immediate luck... Er, maybe I'll just mortgage the apartment (?) and get that $20k program...