title: how split audio file in multiple chapters with predefined times
body: <p>how split audio book file with  in 10 chapters easier to listen , with given metadata predefined times
  0.000000, 3472.683000 seconds this ch0</p>
  
  <p>3472.683000, 7642.058000  ch1 </p>
  
  <p>etc..</p>
  
  <p>2 columns the begin and end of each chapter,</p>
  
  <p>i'm dummy but tried and failed with awk to add columns right and left to obtain the command line</p>
  
  <pre><code>    ffmpeg -i output.mp3  -acodec copy -ss  begin -to end  ch'number'.mp3.
  </code></pre>
  
  <p>the problemn with the NF position and then increment numbers of new output files</p>
  
  <p>how to use awk or sed and count new file names ch01 ch02 etc</p>