fourcc changer Ruined my AVI file. Can I restore it

[troyvcd1]

I had a perfectly good 17gb avi file which was created using mediastudio from captured minidv recordings. I was playing around with avisynth and like an IDIOT I changed the fourCC code for this file. The original code had fourcc description code dvsd and the fourcc used code was two unknown characters that looked like ÿÿ. I changed both the codes to cdvc and the file will not play. When I try to restore the original codes the fourcc used codes can not be set the original ÿÿ. The program says I need to enter four characters. Now if I try to change both codes to dvsd the avi file is corrupted and shows some kind of mosaic pattern. when I look at the file with gspot it says that it has a corrupt avi headed. I did not do anything to this file except change the 4cc code with the avic fourcc changer. Can anyone help me???????????????????????????????

[troyvcd1]

Wow this really sucks. I tried to convert using canupus and the output files all have this crazy mozaic picture. It is hard to describe except to say it is totally messed up. When I open it in mediastudio the file is still messed up and shows attributes like it is 720x576 25fps as if it is a pall video. It was made ntsc and I never converted it. It was working fine till I changed the 4cc code.