hoose the first port connected.
</p>
<a name="Options-14"></a>
<h3 class="subsection"><a href="ffmpeg-devices.html#toc-Options-14">3.11.1 Options</a></h3>

<dl compact="compact">
<dt>&lsquo;<samp>dvtype</samp>&rsquo;</dt>
<dd><p>Override autodetection of DV/HDV. This should only be used if auto
detection does not work, or if usage of a different device type
should be prohibited. Treating a DV device as HDV (or vice versa) will
not work and result in undefined behavior.
The values &lsquo;<samp>auto</samp>&rs