title: the output movie is too fast how to control it
body: <p>i have 60 images <code>000001.jpeg</code> to <code>000060.jpeg</code> now this is my command:</p>
  
  <blockquote>
    <p><code>"-f image2 -i E:\\REC\\Temp\\%06d.jpeg -r 12 E:\\REC\\Video\\" + label1.Text + ".wmv"</code></p>
  </blockquote>
  
  <p>The output is about 3 second but i expect to get only one minute, so how to set duration for each frame to be one image = one second so 60 image = one minute?</p>