b the entire desktop using <code>ffmpeg</code>:
</p><div class="example">
<pre class="example">ffmpeg -f gdigrab -framerate 6 -i desktop out.mpg
</pre></div>

<p>Grab a 640x480 region at position <code>10,20</code>:
</p><div class="example">
<pre class="example">ffmpeg -f gdigrab -framerate 6 -offset_x 10 -offset_y 20 -video_size vga -i desktop out.mpg
</pre></div>

<p>Grab the contents of the window named &quot;Calculator&quot;
</p><div class="example">
<pre class="example">ffmpeg -f gdigrab -framerate 6 -