Registering QuickTime Player Pro

Press Enter at the end of the serial number rather than tab. It may not change immediately while the screen is up. Close the registration field after pressing Enter and quit QT7. Launch it again and double check. It should show as the Pro version.

You're done. It won't appear anywhere else. What you've done is activate the Pro features of the Player. Its name doesn't change, but you now have access to the rest of its abilities.

From the Help menu:

Resizing, Flipping, or Rotating a Movie

You can change the size and orientation of a video track of a movie.

To resize or rotate a QuickTime movie:

1. In QuickTime Player 7, choose Window > Show Movie Properties.

2. In the Properties window, select a video track and click Visual Settings.

3. To resize the movie, type new numbers in the Current Size fields. To keep the same height-to-width proportions, select Preserve Aspect Ratio.

4. To rotate the movie, click one of the rotate buttons.

To restore the movie to its original appearance, click Reset.

I opened a sample video to show where they mean:

Note that the name of the video is Yosemite.mov, which is what is first highlighted when I open the video. You cannot perform the changes you want while that is the highlighted line. I clicked on the Video Track and then had the options to scale and/or rotate the video.

As I noted above, you need to click on the line labeled Video Track before you get the rotate options.

Thanks so much! This is what finally worked for me. I have had my QT registration key since 2005 or so on a 2004 Mac G5 running OS9 (I believe), and tried other suggestions here but this one finally worked! My G5 died 2 weeks ago and I am now using a MacBook Air running Mountain Lion, OS 10.8.2

- SFJonesy.