How to convert a video from a Quick Time Movie into a MP4

Converting a video from a QuickTime file to MP4 allows it to be played on more devices but requires downloading free software and going through a few steps. Open the QuickTime file in the software and select "Export" to save it as an MP4, choosing the appropriate export settings for things like resolution and file size. Once exported, the MP4 version can be opened on devices that don't support QuickTime while retaining the video and audio quality.