video streaming to smartphone does not up-/down-mix audio

[beta-tester]

Bug report

i am using Kodi web interface Chorus2 to stream videos to my Andriod 13 smartphone.
but not all video streams play audio. the reason must be the audio format that the stream outputs.
e.g. for a video with DTS-MA 5.1 or AC3 2.1 or DCA 5.1 audio, the streamed audio don't play.
a video with AAC 2.1 or AAC 5.1 audio, the streamed audio does play.

in the Kodi settings for Audio, there is:

• Audio Passthrough is disabled
• Audio channel setting is set to 2.0
• Up-Down-Mixing (to the 2.0 channels) is enabled.

it looks like the web Interface streaming does not up-/down-mixing audio according to the audio settings in Kodi.

Describe the bug

Here is a clear and concise description of what the problem is:

when using the web interface to stream videos with DTS-MA 5.1 audio to my smartphone, the video plays without audio.
when using the web interface to stream videos with AC3 2.1 or 5.1 audio to my smartphone, the video plays without audio.
when using the web interface to stream videos with DCA 5.1 audio to my smartphone, the video plays without audio.
when streaming videos with AAC 2.1 or AAC 5.1 audio to my smartphone, the video plays with audio.

Expected Behavior

Here is a clear and concise description of what was expected to happen:

i expected that the streamed video will have applied the same audio settings as on the TV.
but the audio setting in Kodi don't have an effect to the streamed video.

To Reproduce

Steps to reproduce the behavior:

1. open a browser on Android SmaprtPhone and open kodi web interface
2. navigate to a video (e.g. TV-Shows -> All-Shows -> ... )
3. on a video, press the Streaming button
4. click to the playback button
5. the video plays without audio, in case there is for example a DTS-MA 5.1 audio format.
6. the video plays without audio, in case there is for example a AC3 2.1 or 5.1 audio format.
7. the video plays without audio, in case there is for example a DCA 5.1 audio format.
8. changing the audio settings in Kodi don't have an effect to the streamed audio format.
   • output audio channels: 2.0
   • up-/down-mixing: enabled (to 2.0 see option above)
   • audio pass-through: disabled

Your Environment

Used Operating system:

using Kodi on CoreELEC (official): 21.1.1-Omega on an Amlogic -ng.arm architecture

• web interface - Chorus2; jez500,Team Kodi - 21.x-1.0.1

i tried the following browsers on my Samsung Android 13 smartphone:

• DuckDuckGo 5.211.0
• Firefox 130.0
• Chrome 128.0.6613.99

local player is set to HTML 5
(setting player to VLC web player or DivX web player, results in no video output - just black screen and no audio on smartphone)

note: Once the issue is made we require you to update it with new information or Kodi versions should that be required.
Team Kodi will consider your problem report however, we will not make any promises the problem will be solved.