Movie with DD 5.1 plays as Stereo

[vip5912]

Android TV Sony 65XF9005, Android 9, Optical SPDIF to Reciever Sony AS5300
Player v0.65
Movie DoVi profile 5 mp4 with AC-3 5.1 448 kb/s
mediainfo.txt
Just plays it as 2 ch PCM
Plex & Kodi play the same movie as DD 5.1

[moneytoo]

Please share a media sample.

[vip5912]

https://we.tl/t-mMRWwZSuOJ

[vip5912]

ExoPlayer (Exoplayer_Chapters_Support_03_08_2020_no_debug.apk) also plays it as 2 ch PCM :-(
Emby (Exoplayer) also plays it as 2 ch PCM :-(

[vip5912]

google/ExoPlayer#9671

[vrayv]

Can you post sample again. I want to test with my exoplayer implementation with some sony devices to confirm the issue.

[vip5912]

https://we.tl/t-150NCok3tf

[vip5912]

If you need I can test you exoplayer implementation on my TV Sony 65XF9005

[vrayv]

This corectly outputs dolby atmos to my receiver from Sony A1 oled to Sony st-1080 receiver.

Considering this is dolby atmos does your receiver supports dolby atmos?

[vip5912]

You can test this video with DD 5.1 (Audio 1)
https://we.tl/t-xNsalhOE3P
My receiver supports DD, DD+.

[vip5912]

As I know Exoplayer can play multichannel audio only to ARC/eARC (HDMI), but not to SPDIF for some TVs.

[vrayv]

This is also dolby atmos. If your receiver does not support it it might downgrade for you.

Would ffmpeg extension transcode it in this scenario to 6 channels?

[vip5912]

This is DD 5.1:

Audio #1
ID : 2
Format : AC-3
Format/Info : Audio Coding 3
Commercial name : Dolby Digital
Codec ID : ac-3
Duration : 1 min 1 s
Source duration : 1 min 1 s
Source_Duration_LastFrame : -16 ms
Bit rate mode : Constant
Bit rate : 448 kb/s
Maximum bit rate : 473 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 : 3.28 MiB (2%)
Source stream size : 3.28 MiB (2%)
Service kind : Complete Main

[vip5912]

My receiver supports DD, DD+ and play DD Atmos as DD+.

[vrayv]

My receiver recognizes it as atmos.

How is this stream recognized on your receiver? Can you try connecting your receiver with arc?

[vip5912]

My receiver recognizes it as DD 5.1 and stock TV player plays it as DD 5.1.
My receiver have not ARC/eARC only SPDIF and HDMI inputs.

[vip5912]

This is well-known bug of Exoplayer in Sony TV (and some other): the issue is that the passthough capabilities are not detected

[vrayv]

It seems to works correctly on my Sony Tv (A1 oled from 2017).

[vip5912]

Do you have ARC or SPDIF?
This bug is only for SPDIF.

[vrayv]

ARC. I dont think spdif has bandwith for atmos at all? So this seems as limitation and not a bug.

I dont see how would exoplayer fail to pass the stream through spdif while it can pass it through hdmi. It sounds as a hardware limitation.

[vip5912]

You are wrong:

1. Dolby Atmos (768kbps) is full compatible with Dolby Digital Plus. SPDIF is 1500kbps.
2. Title of this issue: Movie with Dolby Digital 5.1 plays as Stereo!
3. I tried many movies (and not only I) with DD and Just and Exoplayer play they as Stereo

But Plex and Vimu players (based on modified Exoplayer) play they as DD 5.1

[vrayv]

What happens if you use ffmpeg extension with exoplayer?

[vrayv]

I don't use spdif but as you explained it sounds as a bug. Hopefully it will be fixed.

I guess it recognizes the capabilities wrong and probably skips the passthrough and uses ffmpeg extension to downgrade to stereo.

[vip5912]

I made a little modified Exoplayer (dev-v2, modified AudioCapabilities) and build Player (master) with my local Exoplayer.
It is working fine. I have DD 5.1 on my AVR.
I close the issue.

[Learner00100]

@vip5912 can you share what you modified.
The code zip file and modified apk please.

[vip5912]

ExoPlayer-AudioCapabilities.tgz:

1. 0001-AudioCapabilities.patch
2. library-core-release.mod.r2.18.2.aar

Sorry. I don't use Player app long time.
You need build apk yourself. You can build library-core-release.aar in app/libs yourself or use my.