Tvheadend works, the Plex Channel doesn't

[rix1337]

I have just set up Tvheadend 4.0.7 through docker on my unRAID server.
My PCTV 290e is passed through to Tvheadend and live TV does indeed work.

The one thing not working though is this Channel.

Seems to me that no transcoding on Plex's side is done, since clicking play does result in the error below immediately

I have set "pass" as the default in Tvheadend.

Is there anything I need to do to get this Channel working?

[mariosemes]

A year later and I have the same problem :)

TvHeadEnd ver: 4.0.9
Plex: Version 1.2.7.2987

[jaarsa]

Try adding to line 163:
video_resolution=1080,
video_codec=VideoCodec.H264,
#audio_codec=AudioCodec.AAC,

Outcomment the audio part if you have no sound.

Also look here for pic. http://prnt.sc/cisgci