Server Version#: 1.26.0.5715
I recently upgraded my home theater from 5.1 to 7.1. I have 11 movies that I ripped from BluRay that have either a Dolby True HD or DTS-HD audio track. I have an Onkyo TX-NR5100 receiver.
At first I had the Roku Streaming Stick 4k+ and it would require that Dolby True HD 7.1 and DTS-HD audio tracks to be transcoded into EAC 7.1. My receiver showed a DD 7.1 input in both cases.
Yesterday I bought a Roku Ultra to see if it provided better support. At first I was thrilled because in the Audio settings I had the option for Audio Passthrough of Dolby Atmos and DTS-HD. This option was missing on the Streaming Stick 4k+. I played a movie with TrueHD 7.1 and my receiver displayed an Atmos input and a Dolby Atmos 7.1 output! And Plex showed that the audio was NOT being trancoded. Woot!
I then tried DTS-HD but rather than passing it through, the input was DTS 5.1 and the output was DTS 7.1. Plex was transcoding the audio even though the Allow DTS-HD option was enabled and the source was DTS-HD.
But what is odd is that EVERY input that is NOT DTS shows as Atmos on my receiver. I was watching a TV show in 2 channel stereo and Plex showed the audio as 2 channel stereo but the receiver showed it as an Atmos input and a Dolby Atmos 7.1 output.
I don’t know why the Roku Ultra outputs everything as Atmos even the stuff that isn’t.