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 of the
input can be set with &lsquo;<samp>raw_format</samp>&rsquo;.
Framerate and video size must be determined for your device with
<code>-list_formats 1</code>. Audio sample rate is always 48 kHz and the number
of channels can be 2, 8 or 16. Note that all audio channels are bundled in one single
audio track.
</p>
<a name="Op