How to Rotate a QuickTime Video
1. Open QuickTime Player on your Mac.
2. Click on File and select Open File.
3. Select the video you want to rotate.
4. Click on Edit and select Rotate Left or Rotate Right.
5. Repeat this process as many times as needed to rotate the video to the desired angle.
6. When you’re finished, click on File and select Save As to save the rotated video.