Roku Ultra Does Not play DTS-HD MA 7.1

[speechles 2084]

13 hours ago, One2Go said:

Still don't get it why the DTS-HD MA 5.1 gets flaged for transcoding and the DTS-HD MA 7.1 does not.

Think of DTS as either 5.1 or 7.1. The Roku can play DTS. The Roku cannot play lossless streams. It must always use the DTS "core". Even if you have DTS-HD MA in 6 channel, rather than 8, the Roku isn't playing the lossless stream. It is playing the lossy "core" from the DTS stream.

DTS should pass-through. The player just goes hmm.. whatever.. here is the stream. Untouched. Passes it down the wire. Just puts it out on the pass-through audio stream. After that.. it is up to your equipment to decode that or remove the DTS "core" from the stream and play it.

This is why you must both enable pass-through then rather than use "Auto" use "Custom" and choose which codecs to allow. Usually DD5.1 and DTS turned on. Then restart the Roku. After that the Roku now understands you want DTS to pass-through. It is doing this because you hear silence with 8 channel DTS. That must mean the pass-through is working, or it means Roku isn't passing through the DTS to the receiver. But it does mean the Roku is doing it since this shows as Direct Play. 

@ebrDo you have a TV that supports DTS which can connect to a Roku? I do not or I would do this myself to test. Simply disable audio transcoding for a test user. Then play that file with that test user that has DTS-HD MA in 8 channels. Can you hear the lossy DTS "core" playing from the DTS-HD MA track? or do you also hear silence? If you also hear silence this is most certainly a recent Roku firmware bug.

Edited 29 minutes ago by speechles