[JonnyVee]

Are you using a 3Dlut?

I just installed a 3Dlut and I'm now getting a black screen with audio. No issues when 3dlut is disabled, or when playing via MPC & MadVR with 3Dlut enabled.

If i can't work this out, then I may go back to an external player.

Anyone else have advice?

No, i don't use 3Dlut...

Is the same as with you, in dvbviewer and MPC-HC madvr works very well
In kodi 17 AND 16.1 (DSPlayer version) madvr does not work.
As with you black screen and sometimes sound.
I also need a tip

Cleaninstall form Kodi, no result

Problem solved:

I test an older version from lav (nightly) 0.68.1.35 an it works for me. In DSPlayer set "Internal Filters"

I tried the new 0.69 lav filters and still no-go with 3Dlut, yet MPC-HC as an external player does. I'd flip back to the external player, but nextPVR with MadVR looks too nice. Plus, I was getting some audio skips on live TV with Kodi's internal player that are now gone with DSPlayer/MadVR