title: How to convert stereo sound to mono with FFmpeg?
body: <p>I use the FFmpeg library for a personnal project and I need help about one thing. I have a music file in stereo sound and I want to convert this stereo sound to mono sound ? Is it possible with this library ? Is there a function inside to do this job ? My project is in C/C++.</p>
  
  <p>I searched on the Doxygen documentation on the FFmpeg website and on this forum but I didn't find something interesting.</p>
  
  <p>Thanks for reading !</p>