You can convert QuickTime compatible video files to .mov files using the QuickTime Player.

Here’s how to do it.

Step 1: Launch the QuickTime 10 Player.
Step 2: Open the video file within the QuickTime player.
Step 3: Once the file is open choose File—>Save As.
Step 4: Choose the filename and location that you want the new .mov file to be saved in.
Step 5: In the format drop down box, choose Movie then click Save.

Thats it your all done!!!

quicktime