Apple tv suports only stereo pcm 2.0
Hello, i just bought the new apple tv 4k, ei connected to my tv and sound bar(sonos beam 2gen) and when i watch something on youtube it only supports stereo PCM and the same content play on the tv interface webos it show in the sonos app is dolby digital 5.1 and it s sound richer also, but in movies it support dolby atmos, what can i do to have dolby digital 5.1 on youtube?