I’m using a FireTV Cube 2nd gen with Echo Studio in Amazon’s Home theater mode. I know that the Echo Studio only supports DD and DD+ Atmos, not DolbyTrueHD Atmos.
In fact, if I try to play a video with DolbyTrueHD, Plex will say it’s not supported by the device and automatically transcode it.
When I play a video with DTS audio, Plex will direct play. This is odd because the Studio doesn’t supposedly support DTS. But it wouldn’t be the first thing that the Studio doesn’t support that it really does (ethernet for example).
I do have the FireTV Plex client set to audio Passthrough with HDMI. Since Amazon’s Home Theater mode uses WiFi/ethernet to move the audio rather than HDMI or Optical, I’m not quite sure if audio Passthrough works properly. When I play DD and DD+ videos through Plex I’m pretty sure they are being passed through.
The problem with the Studio is that it’s difficult to know what the Studio is actually decoding because there is no readout like a regular receiver. So I can’t tell if the DTS audio is being downmixed or transcoded either by the Fire Cube or the Studio itself.
My first question is just whether it’s known that Plex audio Passthrough works with Home theater mode?
Does anyone know how audio is handled by the firetv in Home theater mode once it exists the source app? Is the FireTV actually transmitting the untainted stream to the studio for decoding? Or is all the audio transcoded to some container format that the studio can handle?
