HOWTO: Rotate your video in QuickTime Pro - The Unofficial Apple Weblog (TUAW)
www.tuaw.com/2007/04/11/howto-rotate-your-video-in-quicktime-pro
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
Today with so many of us using our digital cameras to shoot short video segments, it's especially easy to forget that we're dealing with videos and turn the camera on its side for a portrait orientation. Unfortunately, most video programs are not set up t