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How do I manually convert Asterisk WAV files to MP3

To convert an Asterisk *.wav file to *.mp3 on your linux server you first need to install the lame MP3 encoder.  Assuming CentOS 6 
cd /usr/src
wget http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el6.rf.i686.rpm
rpm -ivh rpmforge-release-0.5.3-1.el6.rf.i686.rpm
yum install lame


Assuming we are in the folder where the file is and assuming the file we want to convert is called test.wav 
lame -f -o "-b 16 -m m -q 9 --resample 8" test.wav
That command will create a file in the same folder called test.mp3.
  • wav, mp3, convert

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