How to convert WMV to 3GP on MAC OS
This is a step by step guide show you how to convert .wmv to .3GP on Mac OS X.
1. What's 3GP
3GP is a multimedia container format defined by the Third Generation Partnership Project (3GPP) for use on 3G mobile phones but can also be played on some 2G and 4G phones. The 3GP file format is structurally based on the ISO base media file format defined in ISO/IEC 14496-12 - MPEG-4 Part 12. 3GP is a container format very similar to MPEG-4 Part 14 (MP4), designed to decrease storage and bandwidth requirements in order to accommodate mobile phones. It stores video streams as MPEG-4 Part 2 or H.263 or MPEG-4 Part 10 (AVC/H.264), and audio streams as AMR-NB, AMR-WB, AMR-WB+, AAC-LC or HE-AAC.
2. How to convert WMV to 3GP on Mac
Free Download WMV to 3GP Converter for Mac:
To install it, simply mount the .dmg archive by double-clicking it, and copy the application to your applications folder (or wherever you want).
Step 1, Add WMV video files to Mac WMV to 3GP Converter
Click the "Add Files" button to add WMV video files to the wmv to 3GP mac converter. This WMV video converter for Mac supports drag-drop and batch conversion, so you can import and convert several multimedia files at a time.

Step 2, Select output format as 3GP
Use the “format” on the bottom of the window to control the output format. Click on the toggle to the right of the "Format" label to get format drop-down menu. Select "Mobile Phone Video-3GP" as the output format.

Step 3, Change 3GP Video and audio Settings
You can change the Resolution, Encoder, Bit rate and Frame rate of the 3GP video and Sample Rate, Channels, Encoder and Bit Rate of the 3GP Audio. The size of the 3GP file depends a lot on these settings.
Step 4, Select output directory
Expand the "Output" panel. Use the "Browse" button to select an output directory.
Step 5, Click 'Start' to convert WMV to 3GP on Mac
After all the settings, just click 'Start' to convert .wmv to .3GP file on Mac OS X. If you want to trim, crop and more editing, please go to how to trim, crop and merge 3GP videos on Mac.

