I had some great support yesterday about setting up my LG C1 new TV with my Arc soundbar. Apple TV now plays Atmos content and my app shows that the Arc is receiving Dolby Atmos. So far so good.
My problem now is that when trying to play a film, that I know has an Atmos soundtrack, from my Mac mini M1, using VLC ( tried various other programs also), the soundtrack only comes through as Stereo PCM.
I have set the TV for eArc support and Pass through.
All help appreciated.