Here, I want to share my experience of how to convert MOV video to MPEG and MPG on Mac OS X, and which is the best video converter for Mac with you.
Video Converter for Mac is one of the most popular Mac MOV to MPEG, MPG converter. It not only helps you convert MOV movie to MPEG on Mac, but also convert videos from MPEG, MPG to MOV on Mac, MacBook. Plus, it offers a free download. Give it a try here. If you are using Windows, you can turn to Video Converter Ultimate.
Start up this Mac Video Converter, you will see the main interface as below.

Drag your MOV files to the main interface to load your MOV files. You can check resolution, encoder, frame rate, video bit rate by hitting "Edit".
Select "MPEG" as output format by chick the device icon behind the video file in the video list.

After choosing the format as MPEG, you just need to click "Start" button to convert MOV video to MPEG or MPG on Mac OS X.

Free download MOV to MPEG Converter for Mac: