How to Rotate Videos in iMovie

Using iMovie Version 10

1. 
   Select the video clip(s) you want to rotate
2. 
   Click on the "'Adjust" button in the upper right-hand corner
3. 
   Then, click on the third icon in the menu bar below the "Adjust" button
4. 
   Click on these icons on the right side of the option box. The left rotate button turns the clip 90 degrees counter-clockwise and the right rotate button turns the clip 90 degrees clockwise.