Posts: 175
Joined: Sep 2013
Reputation:
2
2017-03-01, 20:42
(This post was last modified: 2017-03-01, 20:43 by MadScientist.)
What's doing the decoding? To get Atmos, it must be bitstream to the processor. Kodi can't decode Atmos
Posts: 10,527
Joined: Oct 2011
Reputation:
639
jjd-uk
Team-Kodi Member
Posts: 10,527
2017-03-01, 22:35
(This post was last modified: 2017-03-01, 22:36 by jjd-uk.)
Sounds like the correct mode isn't enabled on the AVR, since if you're seeing TrueHD being received on the AVR then that shows that Kodi is outputting the audio stream in passthrough mode, and we do nothing different between passthrough of TrueHD only streams and TrueHD with Atmos streams.
Posts: 6
Joined: Feb 2017
Reputation:
0
Didn't test with DTS:X but I have exactly the same behavior with Atmos.
NUC6CAYH Apollo Lake with FW 1.61 on LSPCON, Denon AVR X3300W, Windows 10, Kodi 17.0/17.1
If I play the same file with MPC-HC (with bitstream enabled) the receiver states Atmos on the Display.With Kodi only TrueHD.
Sorry, no logfile at the moment. I try solve some issues with my other Kodi machine right now.
Posts: 9
Joined: Jan 2011
Reputation:
0
[emoji1360] what do you mean MPC-HC ?
Sent from my iPhone
Posts: 93
Joined: Jan 2015
Reputation:
0
2017-03-03, 13:55
(This post was last modified: 2017-03-03, 13:56 by laola.)
MPC-HC is a free media player which runs under windows
Posts: 9
Joined: Jan 2011
Reputation:
0
I will test this player next week when I return from vacation.
Sent from my iPhone
Posts: 505
Joined: Feb 2012
Reputation:
9
Isn't Dolby Atmos a part of the upcoming Windows 10 Creators Update? So it isn't supported at this moment on the Production platform, but (maybe) only on some Insiders Builds for Windows 10?
Kodi 19.1 Android/Google(TV) [ Shield TV Pro [64b] / Mi Box S [32b] / Mi Projector / Fire 4k TV stick / CC with Google TV ]
Kodi 19 [3D MVC build] Shuttle DH270 [Kaby Lake i3-7300/HD630 graphics - W10-1903]
Posts: 10,527
Joined: Oct 2011
Reputation:
639
jjd-uk
Team-Kodi Member
Posts: 10,527
Atmos passthrough has worked just fine in Windows since it first appeared as it just appears as a TrueHD stream to the OS.
Posts: 10,527
Joined: Oct 2011
Reputation:
639
jjd-uk
Team-Kodi Member
Posts: 10,527
2017-03-12, 21:33
(This post was last modified: 2017-03-12, 21:34 by jjd-uk.)
When TrueHD was first defined the specification included the ability to add extensions to the TrueHD audio stream, these extensions have been unused until now. When Dolby came to define Atmos, they made use of these TrueHD extensions so an Atmos audio stream is simply a TrueHD stream + extensions, thus any device that supports TrueHD can pass an Atmos stream as it doesn't need to know what is inside those extensions, it simply see's it as TrueHD stream and passes it through as is.
The only device that needs to be aware of what is inside of those TrueHD extensions is the audio decoding device, which is the AVR, this is also why Atmos discs can be played on any existing blu-ray player without needing an update.
Posts: 26
Joined: Jul 2010
Reputation:
0
ameic
Junior Member
Posts: 26
Hi OP, I've having the same problem as you did, thanks for your update as it confirmed what I thought the problem may be, however I am still getting TrueHD and not ATMOS with "Top Middle" selected on the Denon AMP. Did you actually have to connect speakers to get it to display ATMOS? Thanks!
