title: How to convert .raw audio input to .m4a with ffmpeg?
body: <p>I have this ffmpeg command:</p>
  
  <pre><code>ffmpeg -i testing.m4a -acodec pcm_s16le -f rawvideo tentative.raw
  </code></pre>
  
  <p>I'd like to know the command to convert tentative.raw back to testing.m4a.</p>