Step 1, Double click the "Aiseesoft MP4 Converter for Mac" icon on your desktop to run it.
Step 2, Click "Add file" button on the left top of the main window to select video file(s) you would to convert to MP4, they can be 3GP, WMV, MOV, ASF … format.
Step 3, Select output format and choose output directory
Use the "Profile" to control the output format and select "MPEG-4 Video" as the output format.
Use the "Browse" to select an output folder for saving converted MP4 videos.
Step 4, After all the preparations, just click "Start" to convert 3GP to MP4 on Mac.
Tip: If you want to try more editing, press