>You can specify this parameter multiple times and cycle through the specified
filtergraphs along with the show modes by pressing the key <tt class="key">w</tt>.
</p>
</dd>
<dt><samp>-af <var>filtergraph</var></samp></dt>
<dd><p><var>filtergraph</var> is a description of the filtergraph to apply to
the input audio.
Use the option &quot;-filters&quot; to show all the available filters (including
sources and sinks).
</p>
</dd>
<dt><samp>-i <var>input_file</var></samp></dt>
<dd><p>Read <var>input_file</var>.
<