a name="Options-20"></a>
<h3 class="subsection"><a href="ffmpeg-devices.html#toc-Options-20">3.17.1 Options</a></h3>

<dl compact="compact">
<dt>&lsquo;<samp>sample_rate</samp>&rsquo;</dt>
<dd><p>Set the sample rate in Hz. Default is 48000.
</p>
</dd>
<dt>&lsquo;<samp>channels</samp>&rsquo;</dt>
<dd><p>Set the number of channels. Default is 2.
</p>
</dd>
</dl>


<a name="pulse"></a>
<h2 class="section"><a href="ffmpeg-devices.html#toc-pulse">3.18 pulse</a></h2>

<p>PulseAudio input device.
</p>
<p>To enable