Apple provides an easy preset in Quicktime Pro for generating iPod compatible videos. The extension becomes m4v. Fine, but when I post it online, Safari adds a .txt file extension to the file when you try to download it. This does not appear to happen in Firefox or IE, but as a Mac user, I don't like making things difficult for other Mac users. Does anybody know how I can fix this glitch? I'd post it as a .zip or something, but I think that will just make things more complicated for people.