I was wondering how would you clone someone? I once heard this is done through masking, which leads me to my next question, what is masking? I use vegas 5, so if anybody knows how to do this in vegas please help, thanks.

yeah, it goes like this.

1) lock the tripod down and do not move it until you're done

2) film the person doing their thing, at first try to keep them confined to one half of the screen until you get better at this

3) film them being their clone on the other half of the screen

4) in your editor: layer the second clip on V2 above the first clip. look for cropping, garbare matte, mask, matte or something like that, and cut off half the image of the top clip, so you can see both people at once.

when you get more advanced you can try to do moving shots (generally needing pixel by pixel, frame by frame, lining up), and other cool tricks.

lol, I dont know why i didnt think of that, thanks a ton.