Excellent audio and video transcoder.
Convert AMR files to WAV and vice versa.
Portable version of VidCoder. Free video transcoding software that allows you to quickly convert videos into a variety of different formats.
Video converter with support for a wide variety of formats.
3GP/3G2 Converter supports all mobile media formats.
Efficient Android app to convert and edit audio and video files with support for a wide range of formats.