Apple Resources - ffmpeg (media file converter)
http://edu-observatory.org/olli/Manage/ffmpeg.html

1. Download and Install Homebrew
   https://github.com/Homebrew/brew/releases
  
2. Install ffmpeg (using Homebrew) from the Mac Terminal 
   /opt/homebrew/bin/brew install ffmpeg 
  
3. Using ffmpeg  
   Man page for ffmpeg
   man ffmpeg
   Quick help
   ffmpeg -h
   ffmpeg -i 'input.webm' -q:a 0 -map a output.mp3


  
  

 
    sam.wormley@icloud.com