Dolby and DTS playback issues

[branches78]

On my two Android TV devices (Mecool KT1 with Android 10 and Realme 4K Stick with Google TV 11), I'm getting two odd behaviors with the DTS option ON and OFF using Exoplayer or libVLC while they're connected to a AV receiver.

BASICALLY, WHEN THE DTS OPTION IS ON, ALL DTS CODECS SHOULD PASSTHROUGH IF THE DEVICE HAS SUPPORT OR GET TRANSCODED TO DOLBY DIGITAL WHEN IT DOESN'T HAVE SUPPORT, WHEN THE OPTION IS OFF, ALL DTS CODECS SHOULD BE DECODED AS MULTICHANNEL PCM.

It's important to clarify that I have to exit from the app every time I turn the option ON and OFF to operate correctly.

I tested Exoplayer and libVLC with videos using the h264, h265 video codecs and DTS and DTS-HD streams with 48Khz and 96Khz sampling frequencies.

ON THE MECOOL KT1 WITH ANDROID 10:

Media Player: Exoplayer

DTS option ON and OFF:

H264/DTS 5.1 48KHZ = Playback error
H265/DTS 5.1 48KHZ = Playback error
H264/DTS 5.1 96KHZ = Playback error
H265/DTS 5.1 96KHZ = Playback error
H264/DTS-HD MA 5.1 48KHZ = Playback error
H265/DTS-HD MA 5.1 48KHZ = Playback error
H264/DTS-HD MA 7.1 48KHZ = DD
H265/DTS-HD MA 7.1 48KHZ = DD
H264/DTS-HD MA 7.1 96KHZ = Playback error
H265/DTS-HD MA 7.1 96KHZ = DD

Media Player: libVLC:

DTS option ON:

H264/DTS 5.1 48KHZ = DTS
H265/DTS 5.1 48KHZ = DTS
H264/DTS 5.1 96KHZ = DTS
H265/DTS 5.1 96KHZ = DTS
H264/DTS-HD MA 5.1 48KHZ = PCM 7.1
H265/DTS-HD MA 5.1 48KHZ = DTS without sound
H264/DTS-HD MA 7.1 48KHZ = DTS without sound
H265/DTS-HD MA 7.1 48KHZ = DTS without sound
H264/DTS-HD MA 7.1 96KHZ = PCM 7.1
H265/DTS-HD MA 7.1 96KHZ = PCM 7.1

DTS option OFF:

H264/DTS 5.1 48KHZ = DTS
H265/DTS 5.1 48KHZ = DTS
H264/DTS 5.1 96KHZ = DTS
H265/DTS 5.1 96KHZ = DTS
H264/DTS-HD MA 5.1 48KHZ = DTS without sound
H265/DTS-HD MA 5.1 48KHZ = DTS without sound
H264/DTS-HD MA 7.1 48KHZ = DTS without sound
H265/DTS-HD MA 7.1 48KHZ = DTS without sound
H264/DTS-HD MA 7.1 96KHZ = PCM 7.1
H265/DTS-HD MA 7.1 96KHZ = PCM 7.1

ON THE REALME STICK WITH GOOGLE TV 11:

Media Player: Exoplayer

DTS option ON:

H264/DTS 5.1 48KHZ = DTS
H265/DTS 5.1 48KHZ = DTS
H264/DTS 5.1 96KHZ = DTS
H265/DTS 5.1 96KHZ = DTS
H264/DTS-HD MA 5.1 48KHZ = DTS
H265/DTS-HD MA 5.1 48KHZ = DTS
H264/DTS-HD MA 7.1 48KHZ = DD
H265/DTS-HD MA 7.1 48KHZ = DD
H264/DTS-HD MA 7.1 96KHZ = Playback error
H265/DTS-HD MA 7.1 96KHZ = DD

DTS option OFF:

H264/DTS 5.1 48KHZ = DTS
H265/DTS 5.1 48KHZ = DTS
H264/DTS 5.1 96KHZ = DTS
H265/DTS 5.1 96KHZ = DTS
H264/DTS-HD MA 5.1 48KHZ = DTS
H265/DTS-HD MA 5.1 48KHZ = DTS
H264/DTS-HD MA 7.1 48KHZ = DD
H265/DTS-HD MA 7.1 48KHZ = DD
H264/DTS-HD MA 7.1 96KHZ = DD
H265/DTS-HD MA 7.1 96KHZ = DD

Media Player: libVLC:

DTS option ON:

H264/DTS 5.1 48KHZ = PCM 5.1
H265/DTS 5.1 48KHZ = PCM 5.1
H264/DTS 5.1 96KHZ = PCM 5.1
H265/DTS 5.1 96KHZ = PCM 5.1
H264/DTS-HD MA 5.1 48KHZ = PCM 5.1
H265/DTS-HD MA 5.1 48KHZ = PCM 5.1
H264/DTS-HD MA 7.1 48KHZ = PCM 2.0
H265/DTS-HD MA 7.1 48KHZ = PCM 2.0
H264/DTS-HD MA 7.1 96KHZ = PCM 2.0
H265/DTS-HD MA 7.1 96KHZ = PCM 2.0

DTS option OFF:

H264/DTS 5.1 48KHZ = PCM 5.1
H265/DTS 5.1 48KHZ = PCM 5.1
H264/DTS 5.1 96KHZ = PCM 5.1
H265/DTS 5.1 96KHZ = PCM 5.1
H264/DTS-HD MA 5.1 48KHZ = PCM 5.1
H265/DTS-HD MA 5.1 48KHZ = PCM 5.1
H264/DTS-HD MA 7.1 48KHZ = PCM 2.0
H265/DTS-HD MA 7.1 48KHZ = PCM 2.0
H264/DTS-HD MA 7.1 96KHZ = PCM 2.0
H265/DTS-HD MA 7.1 96KHZ = PCM 2.0

Android 9, 10 and 11 have issues decoding multichannel PCM, they are explained here:

https://issuetracker.google.com/issues/235460800

Server System (please complete the following information):

• OS: Windows 11
• Jellyfin Version: 10.7.7 stable
• Hardware settings & device: 11th Gen Intel(R) Core(TM) i3-1115G4 @ 3.00GHz, Intel UHD graphics.
• Reverse proxy: No
• Other hardware notes: None.

Client System (please complete the following information):

• Device: Mecool KT1 and Realme 4K Stick with Google TV
• OS: Android TV 10 and 11
• Client: Latest stable version for Android TV

[tydog98]

I believe I'm having the same issue. Exoplayer wont play anything at all and LibVLC will play without audio. Kodi also plays without audio until I turn off passthrough, then it plays in 2.0 DD+

[branches78]

I believe I'm having the same issue. Exoplayer wont play anything at all and LibVLC will play without audio. Kodi also plays without audio until I turn off passthrough, then it plays in 2.0 DD+

And what is your device?

[tydog98]

Tivo Stream 4K, running latest update with Android 10. Server is on 10.8.0 beta 3.

[branches78]

With the new 10.8.1 server, some are now playing, others still don't while others stopped playing:

ON THE MECOOL KT1 WITH ANDROID 10:

ON THE REALME STICK WITH GOOGLE TV 11:

[tydog98]

With the latest Jellyfin git I can play 2 channel DTS with LibVLC, but 6 channel still doesn't play. (strangely enough everything works perfectly though my TVs media player with DLNA)

[branches78]

With the latest Jellyfin git I can play 2 channel DTS with LibVLC, but 6 channel still doesn't play.

Did you test exoplayer?

[tydog98]

Exoplayer is still not playing anything at all for me.

[branches78]

With the new 0.14.3 version of Jellyfin for Android TV, Android 10 worsen a bit while Android 11 improved a bit as well, take a look at the bold ones and compare them with the above screenshots:

Android 10:

Android 11:

[tydog98]

Was able to fix my audio issues in libVLC by changing my devices audio settings from manually selecting which codecs my device supports to setting it to automatic. It chooses the same exact codecs so I have no idea why that would fix things. Haven't done thorough testing. Exoplayer still does not work though.