Plex Media Server never transcodes when playing videos via Plex HTPC

Plex Media Server
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1

Server Version#: 1.41.9.9961
HTPC Player Version#: 1.7.1.0.334-aaf6bcca

Hi Everyone,

I have setup my gaming PC as a HTPC which has both Plex HTPC and Plex Server running on it.

My setup is PC > LG C1 > Sonos Arc

What I have seen happen recently is that when I set the Audio Device Kind as HDMI, my Plex Server never transcodes DTS or DTS_HD MA Tracks and many old simple AAC and EAC3 tracks.

Everytime I play the video with this setting, I get no audio in my Sonos Arc most likely because DTS-HD is not transcoded and LG C1 will not passthrough DTS content.

If I change the Device Kind to SPDIF, I immediately get audio even though the PMS still shows Direct Stream.

I always choose AC3, EAC3 and Dolby TrueHD but keep DTS and DTS-HD unchecked. I have no issues playing Dolby Digital Plus Atmos, TrueHD Atmos and normal Dolby Digital tracks.

2

I seem to have fixed this by uninstalling Plex HTPC and manually deleting it’s relevant AppData folder files. Post this reinstalling HTPC seems to have fixed the no audio when selecting Device Kind as HDMI.

But even after this, if I don’t choose DTS, PMS still direct plays DTS-HD and then the Sonos soundbar simply plays Multichannel PCM. Changing from HDMI to Optical causes Sonos to play Dolby Digital. In both cases the audio looses channels from 7.1 to 5.1