Streaming from Decklink Duo 2

I have now managed to get an image on the server side of my setup. My config file looks like this:

<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<configuration>
  <paths>
    <media-path>media/</media-path>
    <log-path>log/</log-path>
    <data-path>data/</data-path>
    <template-path>template/</template-path>
    <thumbnails-path>thumbnails\</thumbnails-path>
  </paths>
  <thumbnails>
    <video-mode>1080p3000</video-mode>
  </thumbnails>
  <channels>
    <channel>
      <video-mode>1080p3000</video-mode>
      <consumers>
        <screen>
          <device>1</device>
          <name>test</name>
        </screen>
        <stream>
          <path>udp://@224.5.5.0:5004</path>
          <args>-vcodec libx264 -tune zerolatency -preset ultrafast -crf 25 -format mpegts -vf scale=1920:1080</args>
        </stream>
      </consumers>
    </channel>
  </channels>
  <osc>
    <default-port>5250</default-port>
  </osc>
  <controllers>
    <tcp>
      <port>5250</port>
      <protocol>AMCP</protocol>
    </tcp>
  </controllers>
</configuration>

Now I can start the stream with the following command in the console of the server:

PLAY 1-1 DECKLINK 2 FORMAT 1080p3000

(the SDI Input on the card comes through port 3)

Unfortunately, I can’t get the stream to work in VLC using udp://@224.5.5.0:5004 (broadcast IP of the network). Any ideas what I am doing wrong?

Many thanks in advance,

Lorenz