Thanks for the help.
The reason why i asked the question in the first place is because of the 1980’s arcade game Dragons Lair. You can get the game on a DVD and its the same as it was in the 80’s. You choose where the game goes by pressing your DVD remote buttons. I dont know if any of you guys have played it but if you dont press the button when you are supposed to it cuts to a scene where you die or whatever. And it way over 1 Gb the whole game. Maybe they used a better Authoring tool, the game was made back in 2002 for the DVD. I will try the tips you have gave me as i dont think mines going to be that big, i just wanted to know how its done for a little video.
Thanks again.