;out7+subcc&quot; and up to &quot;out42&quot;, the
stream #43 is subcc for stream #7 and stream #44 is subcc for stream #19.
</p>
<p>If not specified defaults to the filename specified for the input
device.
</p>
</dd>
<dt>&lsquo;<samp>graph_file</samp>&rsquo;</dt>
<dd><p>Set the filename of the filtergraph to be read and sent to the other
filters. Syntax of the filtergraph is the same as the one specified by
the option <var>graph</var>.
</p>
</dd>
<dt>&lsquo;<samp>dumpgraph</samp>&rsquo;</dt>
<dd><p>Dump gr