Why menconder fps rate does not work?
<p>I'm using mencoder to create a video out of some .png files. The problem is that the frame rate doesn't change, regardless of the -fps flag. The output video has different time lengths (in their properties), but the video's size and speed are always the same (regardless of the FPS chosen). </p>

<p>I just want to create a shorted video by using higher FPS rates. In short, a "time-lapse" of my original set of images. What am I doing wrong with mencoder? I'm using the following command:</p>

<pre><code>mencoder mf://./IMG/images*.png -mf w=800:h=600:fps=20:type=png -ovc copy -oac copy -o video.avi
</code></pre>