1)   Im~TOO_3GP Video Converter 3.1.8.0828b
ImTOO 3GP Video Converter v3.1 is a professional mobile phone tool. It supports converting various popular formats including RM, RA, 3GP, 3G2, WAV, MP3, AAC, WMA, MPG, M4A, AVI, MP4, MOV, WMV, MPEG, CUE, APE, CDA and AVI to 3GP,RA, RM,AAC, M4A,XviD.
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 2)   Magicbyte 3GP Video Converter 1.2.11.07
Convert and manage 3GP video to all popular video formats which taken from your phones. Convert AVI, MPEG1, MPEG2, MPEG4, RM, MP4, MOV, WMV to 3GP.It has various settings.Can extract audio from 3GP, AVI, MPEG file and encode to MP3 or WAV.
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