evice,
using a packet buffer of 100000 packets if the source is HDV.
<div class="example">
<pre class="example">ffmpeg -f iec61883 -i auto -hdvbuffer 100000 out.mpg
</pre></div>

</li></ul>

<a name="jack"></a>
<h2 class="section"><a href="ffmpeg-devices.html#toc-jack">3.12 jack</a></h2>

<p>JACK input device.
</p>
<p>To enable this input device during configuration you need libjack
installed on your system.
</p>
<p>A JACK input device creates one or more JACK writable clients, one for
each audio channel, w