For free, easy, fast and simple conversion of PC video files to mobile friendly video files use Mobilevideo For 3GP.
    As its name suggests this tool is the simplest way to convert popular video formats to 3GP Video, the format which is most friendly with mobile and cell phones. This tool with a clean and clear interface supports the conversion of AVI to 3GP, MPEG to 3GP, WMV to 3GP, vob to 3GP, DVD to 3GP, 3GP Photo Slideshow. Moreover the indispensable tool provides easy and powerful ways to convert popular audio files which include the; WAV, WMA, MP2, AC3, RA, M4A, OGG, AAC and more to 3GP supported MP3 formats. This smart and quick tool of its kind supports an apprehensive feature to support video files that include AVI, MPEG, WMV, MOV, MP4, RM, RMVB, DivX, ASF, VOB, 3GP, and more. The tool is supported with a simple interface for its easy installation and un-installation.
    This must have tool with its fast and easy to handle capabilities will prove to be the best choice.