

Roku and FireTV and AppleTV etc all have various levels of playback support but most focus on streaming support, not local file playback so AppleTV, for example, only supports Atmos in DD+ audio format not TrueHD audio format (streaming audio support not Bluray audio support). You can use other devices besides the Shield Pro, it’s just that the Shield Pro covers the broadest native playback of files. Plex doesn’t really know what the other audio tracks are even if there was a DD+ track with the DTSMA track - but if it has multiple tracks, you can select a different track than the default and it will remember your choice. I am not familiar with the LG smart platform and Plex on it so someone with more experience there can likely give you specifics there. It’s not a heavy lift to do audio like that so if you have files with those higher quality codecs and you’ve been hearing audio then most likely that’s already been happening. If your file has DTSMA audio codec, Plex, I believe, should see that your TV doesn’t support DTSMA passthrough and will transcode the audio to AC3\EAC3 (DD\DD+) on the fly. Is there a way I can “force” this on the Plex Media Server or is it completely dependent on what the soundtrack the movie comes with?
