Issue with Exporting file

Hello, I was working on a segment and went to export the video as a movie. However, I can’t seem to get it to work? I think I am doing everything write, but when I hit okay, it doesn’t do anything (I attacked the image of the Export pot window) and I can’t find the video file for it

Did you install Quicktime?

Also may be relevant:

Okay, that was the issue.
I got a new computer a few months back and Didn’t think to down load Quick time.

thank you for the help.