Use 3gpConvert to batch converting video and audio file to 3GP and play it on your mobile phone or MP4 player. It has 4 key features the most easy to use. Simple click add file or directory and press start to convert it all; Faster than ever. Complete a converting in 3 minutes (source video length 50 minutes); Hi-quality. It can get better result but less size than other Converters; It supports AVI, WAV, MPG, MP3, MOV, AMR, MP4. Version 3.0 may include unspecified updates, enhancements, or bug fixes.