3GP Converter for Mac OS X
3GP Converter for Mac is such a powerful Converter for Mac users which can convert audio and video between various formats including AVI, MPEG, VOB, 3GP, MOV, MP4, M4V, WAV, WMA, M4A, AAC, MP3, MP2, 3G2, AC3. With it, you can also set output settings like frame rate, encoder,sample rate, channel, and bitrate. Customize video effects, preview your video files before conversion are supported by 3GP Converter for Mac as well.
Step by step of how to convert 3GP videos for Mac OS X:
Step1.Download and install 3GP Converter for Mac
Step2.
You can load 3GP videos by clicking 
button. You will see the interface like this
Step 3. Output formats and Settings
From the “Format” drop-down list you can find one format that meets your requirement, such as to MP4 for iPod Touch,iPod Nano,iPhone, Zune, PSP, Creative Zen,Apple TV etc.
You can also select destination folder :
To have your own video settings you can click “settings” button.
After doing the above steps, you can click 
button to start conversion.
With 3GP Converter for Mac, converting 3GP videos is not a problem any more! You can enjoy 3GP videos at home or on the go !