To make some simple AVI credits... you could try Windows Movie Maker.
To make some end game credits... how about playing the video as part of the WinZone on your last level?
Here's how I would do it. In the WinZone script:
- show a completely black screenwide HUD
- hide all of the HUDs that make up your display (Lives, Health, ammo, etc)
- play the video
In that order, it should execute as predicted and end the level once the video has finished playing.
The one and only,
Whosoever says, "Don't sweat the small stuff," is obviously not a programmer.