Need some info

Ok guys, i want to try and make a short video that maybe i could use as a sig or avatar on anotehr forrum, iw atn to take my DC3 and its D-Day paint and have a sort of fly by seeing the forum is about a ww2 game, is it possible to make a videoand store into another foilder like a temp folder or is it only possible to save them into the Flight sim folder by default. If anyone can help i would apreciate it.