Convert MP3 to AMR,WAV and AAC
// this script will convert MP3 format to AMR,WAV and AAC
#!/bin/sh
#strip file extension
name=`echo "$1"|cut -d'.' -f1`
#encode to AAC format
ffmpeg -i $1 -ar 22050 -ac 1 -ab 96k $name.aac
#encode to AMR format
ffmpeg -i $1 -ar 8000 -ac 1 -ab 12.2k $name.amr
#the last thing is WAV format
ffmpeg -i $1 -ar 8000 -ac 1 $name.wav