ok mark you got me, for video editing that is, though my frame size is exactly what i need for my animation it does not ness work for reg video editing....
http://www.uwasa.fi/~f76998/video/conversion/
That site is a super in depth how to / know it all when it comes to this stuff from TV freq and everything relating to aspect ratio. Its a good read, A Long one But very educational. Anyone wondering what we are talking about should check it out....