t_size</samp>&rsquo;</dt>
<dd><p>Specify the minimal buffering fragment in PulseAudio, it will affect the
audio latency. By default it is unset.
</p>
</dd>
<dt>&lsquo;<samp>wallclock</samp>&rsquo;</dt>
<dd><p>Set the initial PTS using the current time. Default is 1.
</p>
</dd>
</dl>

<a name="Examples-4"></a>
<h3 class="subsection"><a href="ffmpeg-devices.html#toc-Examples-4">3.18.2 Examples</a></h3>
<p>Record a stream from default device:
</p><div class="example">
<pre class="example">ffmpeg -f pulse -i de