title: How to crop a mp3 from x to x+n using ffmpeg?
body: <p>Following <a href="https://stackoverflow.com/questions/1386818/how-to-crop-a-mp3-in-asp-net-c">this question</a> I decided to use ffmpeg to crop MP3s. On <a href="https://stackoverflow.com/questions/43890/crop-mp3-to-first-30-seconds">another question</a> I found this way of doing it:</p>
  
  <pre><code>ffmpeg -t 30 -acodec copy -i inputfile.mp3 outputfile.mp3
  </code></pre>
  
  <p>The problem is that I don't want to crop the first 30 seconds, I want to crop from x to x+n, like from 30s to 100s. How would I go and do this?</p>
  
  <p>I'm reading the <a href="http://www.ffmpeg.org/ffmpeg-doc.html" rel="noreferrer">man for ffmpeg</a> but this is not really straightforward, especially since I just discovered about ffmpeg and I'm not familiar with audio/video editing softwares, so any pointers would be appreciated.</p>