Selur's Little Message Board

When I have 720x480 in 4:3 file and make ffv1, better convert in 1:1 up in 720X540 or down at 640x480? Dont know whats the regular, according to the web the size are 640x480...
Or need to leave at 720x480? 

If you want/need a square pixel par, I would increase the width.
If it's for archiving, I wouldn't change the par. (keeping the original as untouched as possible)