aptured video.
</p>
</dd>
<dt>&lsquo;<samp>sample_rate</samp>&rsquo;</dt>
<dd><p>Set the sample rate (in Hz) of the captured audio.
</p>
</dd>
<dt>&lsquo;<samp>sample_size</samp>&rsquo;</dt>
<dd><p>Set the sample size (in bits) of the captured audio.
</p>
</dd>
<dt>&lsquo;<samp>channels</samp>&rsquo;</dt>
<dd><p>Set the number of channels in the captured audio.
</p>
</dd>
<dt>&lsquo;<samp>list_devices</samp>&rsquo;</dt>
<dd><p>If set to &lsquo;<samp>true</samp>&rsquo;, print a list of devices and exit.
</p>