Sound out of sync

[gluk147 4]

Hi everyone.
Any ideas what the problem might be?
Emby Server version 4.10.20.
For playback, I tried the Emby Android and Emby for Android TV apps—the latest versions from the Google Play Store.

I tested about six different movies; all used the AV1 video codec and Dolby Atmos TrueHD audio.
In all cases, the streaming boxes were connected directly to a Samsung HW-930F soundbar.

The boxes I tested were the Xiaomi Mi Box 3, Ugoos SK-01, and Homatics Box 4R; the problem was the same on all of them. Between the 55- and 65-minute mark, a severe audio-video desync occurs (a lag of about 2 seconds).
If I watch the same movies on the Google TV Streamer, there are no such issues—though that device doesn't output TrueHD audio.

The problem only occurs in the Emby apps; everything works perfectly via Vimu and Kodi.

I checked the server logs, but there are no errors.

[Luke 42888]

 

Hi there, let's look at an example. Please attach the information requested in how to report a media playback issue. Thanks!

 

[gluk147 4]

To clear the logs, I restarted the server at 20:00 before the test.
I started playing the movie at 20:01.
The audio began to lag at approximately 21:00 (around the 58–59 minute mark).
Device: Xiaomi Mi Box 3.
I am attaching the server logs and information about the video file.

2026-07-28 21:00:29.440 Info SessionManager: Playback progress (Pause)
I stopped playback myself at that point, after the lag had started.

embyserver.txt hardware_detection-63920865587.txt Супермен 2025 (TrueHD Atmos).mkv.MediaInfo.txt

Edited July 28 by gluk147

[Luke 42888]

OK we'll take a look at it. Thanks.