"0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">



<p style="margin-top: 1em" valign="top"><b>&minus;mt</b></p> </td>
<td width="7%"></td>
<td width="70%">


<p style="margin-top: 1em" valign="top">Use multi-threading
for decoding, if possible.</p></td>
<td width="8%">
</td>
</table>

<p style="margin-left:11%;"><b>&minus;crop</b>
<i>x_position y_position width height</i></p>

<p style="margin-left:22%;">Crop the decoded picture to a
rectangle with top-left corner at coordinates
(<