ou
need to configure with the appropriate <code>--extra-cflags</code>
and <code>--extra-ldflags</code>.
On Windows, you need to run the IDL files through <code>widl</code>.
</p>
<p>DeckLink is very picky about the formats it supports. Pixel format is always
uyvy422, framerate, field order and video size must be determined for your
device with <code>-list_formats 1</code>. Audio sample rate is always 48 kHz.
</p>
<a name="Options-21"></a>
<h3 class="subsection"><a href="ffmpeg-devices.html#toc-Options-21">4.