I have some videos with the aspect messed up (set to 16:9 should be 4:3). I'd like to change it, preferably without a re-encode brute force. Right now, I'm trying Subler for this...it in theory can do this, at least it has options for it, but no matter what I enter or check or uncheck, I can't get it to load to 4:3...instead it's often at 4:1..I seem to only be able to switch between the profile pulldowns and not the actual controls. Anyone know how to use it? Is there a better program to go for?