My setup:
HDHomeRun Extend dual tuner OTA
NVIDIA Shield KODI v16 using WMC/ServerWMC and it works well but want to get away from Windows
RaspberryPI3 KODI v16 LIbreElec works well with WMC and initially with TVHeadend but not now.
TVHeadend HTSP CLient version 2.2.15
TVHeadend 4.0.9
Just got the RPi3 1.5 weeks ago and initially LibreElec and TVHeadend/backend worked well for a day after one major bone head operator error. NOTE: I have the mpeg2 codec license installed
HDHomerun Extend tuner failed [both systems] and Silicon dust immediately replaced it [great service].
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CURRENT PROBLEM
Now, if I attempt to enable TVHeadend/backend as the PVR and try to watch any channel all I get is a screen which looks like a cross between a moving colored jigsaw puzzle and a screen which looks like someone dragged a screen wide brush through wet paint from top to bottom. Audio is OK.
NOTE: I made sure the Windows server is NOT running on my Win 7 PC.
I followed Ronnie Bailey's you tube videos step by step as they were closer to my version of TVHeadend then the Wiki Page.
It must be something I have set up wrong but at this point, with as complex as TVHeadend's setup is, I don't know where to turn