i'm reciving the error code 80070057 while encoding a couple of movies in avi format to a dvd.someone knows how to fix it?

That error is generally video card/drivers related.
Could you list your system specs especially video card?
It would also help if you were to supply a bit more information on what you are trying to do? What program are you using? What kind of avi movies are they? Where did they come from? How long in time are those movies?
At the moment all you have basically stated is "my car won't start"