For those weird tall skyscraper videos we manage to film on our iphones, you can get them to rotate. You just need to know this: Snow Leopard users - use Quicktime Player 7 which you can download and install without affecting your installed Quicktime 10.

1. Open movie
2. Go to the Window > Show Movie Properties menu and a new window appears
3. Select Video Track on the left side
4. Select ‘size’ on the right hand side of the Video Track. You can rotate, adjust size and more with the buttons at the bottom of this menu.
5. Save! go to File > Export and choose the file format you want.