<channel>
      <video-mode>1080p5994</video-mode>
 <consumers>
<decklink>
    <device>2</device>
    <embedded-audio>true</embedded-audio>
    <latency>default</latency>
    <keyer>external</keyer>
    <key-only>false</key-only>
    <buffer-depth>3</buffer-depth>
    <key-device>device + 1</key-device>
 </decklink>
 </consumers>
</channel>