I've got various Apple Pro Rezz (HQ) clips at 16x9 (1920x1080)
and I would like to down convert them to 4x3 (720x480) for a
project that requires these SD ratios.
What's my best way of doing this?
My camera is a Panasonic ACVHD camera, which doesn't have
an SD setting. Is there a way to output these massive clips
into something smaller?