[gregeeh]

Hi Everyone,

Ugoos AM6B Plus, CoreELEC 21.1

I have my Headphones connected to the SPDIF Output and watch TV via the HDMI.

When I select the SPDIF Output, some videos like this one:

Code:

Audio
ID                                       : 2
Format                                   : E-AC-3 JOC
Format/Info                              : Enhanced AC-3 with Joint Object Coding
Commercial name                          : Dolby Digital Plus with Dolby Atmos
Codec ID                                 : A_EAC3
Duration                                 : 37 min 58 s
Bit rate mode                            : Constant
Bit rate                                 : 768 kb/s
Channel(s)                               : 6 channels
Channel layout                           : L R C LFE Ls Rs
Sampling rate                            : 48.0 kHz
Frame rate                               : 31.250 FPS (1536 SPF)
Compression mode                         : Lossy
Stream size                              : 209 MiB (3%)
Language                                 : English
Service kind                             : Complete Main
Default                                  : Yes
Forced                                   : No
Complexity index                         : 16
Number of dynamic objects                : 15
Bed channel count                        : 1 channel
Bed channel configuration                : LFE

Will have audio from both the SPDIF and the HDMI. Why? I didn’t even think it was possible to have audio via both at the same time!
Here are my Audio Setting for using the SPDIF Output:





Here is the debug file when playing the video above.

TIA

[izprtxqkft]

try this https://discourse.coreelec.org/t/mute-hd...-spdif/705

(with appropriate adjustment to match your hardware)

[gregeeh]

try this https://discourse.coreelec.org/t/mute-hd...-spdif/705

(with appropriate adjustment to match your hardware)

Thanks, I will take a look at that.

However, surely there has to be something wrong somewhere if I only get this with some videos?  90% of the videos don't have this issue.

EDIT:  This is interesting.

Setting the SPDIF as the output and before playing the video.

Code:

Ugoos:~ # amixer get 'Audio hdmi-out mute'
Simple mixer control 'Audio hdmi-out mute',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]

After starting to play the video.

Code:

​​​​​​​Ugoos:~ # amixer get 'Audio hdmi-out mute'
Simple mixer control 'Audio hdmi-out mute',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]
Ugoos:~ #

​​​​​​​Seems playing the video is turning OFF the muting of the HDMI output.

[gregeeh]

No ideas anyone?

[sarbes]

Coreelec is not Kodi. And this is not a paid support service where you'll get a guaranteed response in 24h.

[MatteN]

No ideas anyone?

Yeah, read the forum rules:
General conduct 
#6 Be patient. Kodi's user base is global and there are many more forum users asking questions than writing answers. Please wait at least 24 hours before bumping your own post unless you have new information to add.

[gregeeh]

It has now been a couple of months and no reply.

What should my next steps be?

TIA

[fritsch]

Header over to CoreELEC discourse forum, your question is a HW / Driver question. Kodi has no code at all to duplicate audio to two outputs, this happens internally on driver level or even HW level.