Can I set the dimensions of a screen capture in QuickTime Player 10

Question

I'm using QuickTime Player 10 on a Mac to create a Screen Recording. Is it possible to set the dimensions of the movie or the location that needs to be captured? I have to create multiple movies using precise screen dimensions and locations.

Answer 1

I haven't found a way, except an iterative workaround.

1. Window -> Show Movie Inspector (⌘I)
2. File -> New Screen Recording
3. Select a rectangle and record one second
4. Inspect size (and throw away the recording)
5. Repeat back to 2, adjust the rectangle until the size is right

It would be much easier if the developers of the Quicktime app would change the rectangular select to behave like the Screenshot app and show the size in a small popup box while you are adjusting the rectangle.