Olds Windows Movie Maker Problems Opening Windows Movie Maker Video On Older Computer?

Problems opening Windows Movie Maker video on older computer? - olds windows movie maker

I have a movie on my computer with wondows Vista Movie Maker. I saved a flash drive. I tried to open the video in an old computer, Windows. It would be open, but the icon is there. How do I save my movie as a previous version of Windows Movie Maker files?