title: ffmpeg txt from audio levels
body: <p>Regards community,</p>
  
  <p>I want to use <strong>ffmpeg</strong> to generate a file (txt, csv) from audio values.
  Any idea?</p>
  
  <p>I use this code to generate the audio levels:</p>
  
  <pre><code>ffplay -f lavfi "amovie=input.aac, asplit [a][out1]; [a] showvolume=f=1:b=4:w=800:h=70 [out0]"
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/dpxZl.png" rel="noreferrer"><img src="https://i.stack.imgur.com/dpxZl.png" alt="Show volume"></a></p>
  
  <p>Thank you a lot</p>