change default aspect ratio without re-encoding?

[boonesmi]

i have a couple video files that have the wrong default aspect ratio.. it doesnt matter which player i open them with they all try to play in a widescreen format (which distorts the picture making everything look short/fat) i can go in an over-ride the default and set the aspect ratio at 4:3 (which fixes the problem)

my question is: is there any simple utility i can use to just change the default aspect ratio so players will try to play in a 4:3 ratio instead of the incorrect 16:9. preferably something that wont re-encode the video file

[manono]

And what kind of video files are these? AVI, MPG, what?

[boonesmi]

lol, yeah that was kinda important info i should have included

they are .avi using an older xvid version for the video



i just tried this utility
http://www.videohelp.com/tools/MPEG4_Modifier

and it seemed to do the trick!!!



figured i should post it so if anyone like me does a forum search (like i did) maybe they will see this one