1)   Xilisoft 3GP Video Converter 7.3.40.1121b
It is a powerful 3GP and 3G2 Converter, which can convert video formats including MOV, RM, AVI, MPEG, WMV, MPEG to 3GP, 3G2, MPEG4, RM, Xvid, and also convert audio-only 3GP file to MP3, WAV, RA, AAC, M4A and vice versa. .
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 2)   Magicbyte 3GP Video Converter 4.3.42.0401
A powerful 3GP, 3G2 Converter, which can convert from 3GP and manage video formats including MOV, RM, AVI, MPEG, WMV, MPEG to 3GP, 3G2, MPEG4, RM, Xvid, and also convert audio from 3GP, AVI, MPEG file and encode to MP3 or WAV.It has various settings.
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