Step 1:Free download Download Daniusoft Quicktime Converter
Step 2 : Launch it and get ready to convert M4V to MPG.

Step 2: Click
to Add M4V files.

Step 3: Click Output Option, choose MPG Format (*.mpg), ofcourse you can set the output folder, quality and other settings while convert m4v to MPG file. (note, you can also use it to convert m4v to MPG 4 (mp4 format))
.
Step 4: Click
to Start Convert M4V.

OK, We have finished the whole conversion of M4V to MPG, Apart from convert M4V to MPG, you can also use it to Convert M4V to other video files, such AVI, WMV, MPG and so on. Just Free download and enjoy it.