DVD Video Programming

I'm interested in creating programs that would run on a DVD movie, but I can't find anything remotely useful.

I found DVDAuthor, but I don't think it really suits my purposes. I need more functionality than just setting subtitles and creating menus. I want to run actual programs... like using functions, setting variables, and all that jazz. Is this feasible? It seems like it should be, since interactive games like Scene It exist, but who am I to say. I can't find a god damn bit of information on this.

If anybody knows of any tutorials or libraries on how to do more extensive programming, it would be greatly appreciated if you would share. :)

I'm always open to learning new languages.

Jesus Fucking Christ shut up already, nobody here on /prog/ is going to help you, since this place is a trolling shithole and I don't think FrozenShit knows anything about programming DVDs.

To answer your question, there are 16 general purpose registers. For the instruction set, see http://www.dvd-replica.com/DVD/vmcmdset.php and http://dvd.sourceforge.net/dvdinfo/index.html ("Virtual Machine coding" section.)

Good luck finding a decent piece of software that allows you to play with that though. I think I used DVDStyler sometime and I saw traces of programmability ("before menu action", "click action", "after play action" and shit like that with some pseudocode), but I can't remember. Heck, maybe it wasn't even DVDStyler. It was free software for sure, try them all, there aren't many of them.

Also these programs are really GUIs for serious CLI tools which actually generate the DVD files, I guess said tools can do it all. For example DVDAuthor, see http://dvdauthor.sourceforge.net/doc/dvdauthor.html (specially the "XML Description" and "Language Description" sections I guess).

Goddamn, I just did for you what you should have done yourself: five fucking minutes of Google. I hope you ｆｅｅｌｋｉｎｄｏｆｂａｄａｂｏｕｔｉｔ：（