From 407c716f82da25fa5ffe30a819ea1adb5c6873ab Mon Sep 17 00:00:00 2001
From: Shadowghost <Ghost_of_Stone@web.de>
Date: Mon, 2 Jan 2023 22:26:54 +0100
Subject: Add stereo downmix algorithm selection.

---
 Jellyfin.Api/Controllers/DynamicHlsController.cs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'Jellyfin.Api/Controllers/DynamicHlsController.cs')

diff --git a/Jellyfin.Api/Controllers/DynamicHlsController.cs b/Jellyfin.Api/Controllers/DynamicHlsController.cs
index af43bb578..e0c5bcc84 100644
--- a/Jellyfin.Api/Controllers/DynamicHlsController.cs
+++ b/Jellyfin.Api/Controllers/DynamicHlsController.cs
@@ -22,6 +22,7 @@ using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.MediaEncoding;
 using MediaBrowser.Model.Configuration;
 using MediaBrowser.Model.Dlna;
+using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.IO;
 using MediaBrowser.Model.Net;
 using Microsoft.AspNetCore.Authorization;
@@ -1731,7 +1732,12 @@ namespace Jellyfin.Api.Controllers
 
             var channels = state.OutputAudioChannels;
 
-            if (channels.HasValue)
+            if (channels.HasValue
+                && (channels.Value != 2
+                    || (state.AudioStream is not null
+                        && state.AudioStream.Channels.HasValue
+                        && state.AudioStream.Channels.Value > 5
+                        && _encodingOptions.DownMixStereoAlgorithm == DownMixStereoAlgorithms.None)))
             {
                 args += " -ac " + channels.Value;
             }
-- 
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