title: Change FPS when creating gif from pictures with ffmpeg
body: <p>I'm trying to create a gif from a set of pictures with ffmpeg; currently i'm using:</p>
  
  <pre><code>ffmpeg -i &lt;input images&gt; &lt;output-file&gt;.gif
  </code></pre>
  
  <p>Which works perfect, but i would like to know how can i change the frame ratio of the created gif? (meaning, how much time for the delay between two frames)</p>
  
  <p>Thanks in advance!</p>