Audio drops when using native player

[Deihmos 169]

Player version 2.0.2 (5)

Server 4.91.90

I am experiencing an issue where the audio will randomly drop out momentarily on my Apple TV 4K when avkit is used as the player. It does not happen with the mpv player. The videos are remuxed to mp4 for compatibility.

I know that it’s related to Emby, as the issue doesn’t occur when I play the videos using the native Apple TV player or Infuse. I am not sure if the Emby logs would pick this up.

 

 

Edited November 30, 2025 by Deihmos

[Luke 42077]

 

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

 

[Deihmos 169]

On 11/30/2025 at 9:47 PM, Luke said:

 

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

 

I am not sure if there is anything useful in the server logs. Started playing The Lost Bus at 2025-12-01 22:55. After a few minutes sound was lost for about 30 seconds then it came back

embyserver-3.txt

[visproduction 315]

Relevant?  Suspect some damaged issue in the media or extreme bitrate with multiple codecs, subtitles and media size maxing out streaming thoughput?  Just a guess.

Logtext line 19190

Quote

2025-12-01 19:30:04.504 Info PlaystateService-0HNHH720FHT6U:00000001: http/1.1 Response 204 to host1. Time: 13ms. POST http://192.168.1.10:8096/emby/Sessions/Playing/Stopped?X-Emby-Client=Emby for Apple TV&X-Emby-Device-Name=Apple TV&X-Emby-Device-Id=21132F86-4996-4711-B6E9-F64CA1BD7D52&X-Emby-Client-Version=2.0.2 (5)&X-Emby-Token=x_secret3_x&reqformat=json. 
2025-12-01 19:30:04.511 Error SessionManager: Error in event handler
    *** Error Report ***
    Version: 4.9.1.90
    Command line: /opt/emby-server/system/EmbyServer.dll -programdata /home/debian/.config/Emby -ffdetect /opt/emby-server/bin/ffdetect -ffmpeg /opt/emby-server/bin/ffmpeg -ffprobe /opt/emby-server/bin/ffprobe -restartexitcode 3 -updatepackage emby-server-deb_{version}_amd64.deb
    Operating system: Linux version 6.12.57+deb13-amd64 (debian-kernel@lists.debian.org) (x86_64-linux-gnu-gcc-14 (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian
    OS/Process: x64/x64
    Framework: .NET 8.0.11
    Runtime: opt/emby-server/system/System.Private.CoreLib.dll
    Processor count: 8
    Data path: /home/debian/.config/Emby
    Application path: /opt/emby-server/system
    System.InvalidOperationException: System.InvalidOperationException: Nullable object must have a value.
       at System.Nullable`1.get_Value()
       at EmbyScripterX.EventManagers.ScripterXSessionManager._sessionManager_PlaybackProgress(Object sender, PlaybackProgressEventArgs e)
       at MediaBrowser.Common.Events.EventHelper.TriggerAll[T](EventHandler`1 mainHandler, Object sender, T args, ILogger logger)
    Source: System.Private.CoreLib
    TargetSite: Void ThrowInvalidOperationException_InvalidOperation_NoValue()
    
2025-12-01 19:30:04.511 Info PlaystateService-0HNHH720FHT70:00000001: http/1.1 Response 204 to host1. Time: 10ms. POST http://192.168.1.10:8096/emby/Sessions/Playing/Progress?X-Emby-Client=Emby for Apple TV&X-Emby-Device-Name=Apple TV&X-Emby-Device-Id=21132F86-4996-4711-B6E9-F64CA1BD7D52&X-Emby-Client-Version=2.0.2 (5)&X-Emby-Token=x_secret3_x&reqformat=json. 
2025-12-01 19:30:04.511 Info Trakt: Item Not fully played. Tell trakt.tv we are no longer watching but don't scrobble

Related?
Found with search: Debian "System.InvalidOperationException: Nullable object must have a value"

 https://stackoverflow.com/questions/59864065/how-to-debug-and-fix-nullable-object-must-have-a-value-within-entity-framework

[Deihmos 169]

Something changed in Apple TV 26 because I did not have this issue before playing mp4 files. It happens with all of them. 

Edited December 3, 2025 by Deihmos

[Luke 42077]

OK yes it does appear to be a problem with the player.