Hardware: FRITZ!Box 6490 cabel
Local-IP http://192.168.178.1
Provider: Vodafone (Kabel-Deutschland)

Insatlled
vlc:  3.0.17.3-bp154.1.49
vlc-codecs: 3.0.17.3-pm154.2.3
vlc-codec-gstreamer:  3.0.17.3-bp154.1.49

The vlc Player shows only a red hat (sound  works)
if the vlc is called :

vlc
rtsp://192.168.178.1:554/?avm=1&freq=330&bw=8&msys=dvbc&mtype=256qam&sr=6900&specinv=1&pids=0,16,17,18,20,5100,5101,1170,1176,2171,2172,5102,5103,5104,5105

(ARD-HD) on cabel

vlc works fine, using SD-quality

vlc  http://192.168.178.1/dvb/m3u/12200_53601.m3u?sid=58397d19db75f259
(RTL-SD) 


The PC runs in dualboot Leap15.3 or Leap15.4 
In Leap15.3  all TV-Stations can be shown