diff --git a/Emby.Server.Implementations/Localization/LocalizationManager.cs b/Emby.Server.Implementations/Localization/LocalizationManager.cs
index bc80c2b405..6fca5bc1ba 100644
--- a/Emby.Server.Implementations/Localization/LocalizationManager.cs
+++ b/Emby.Server.Implementations/Localization/LocalizationManager.cs
@@ -138,7 +138,7 @@ namespace Emby.Server.Implementations.Localization
                     string twoCharName = parts[2];
                     if (string.IsNullOrWhiteSpace(twoCharName))
                     {
-                        continue;
+                        twoCharName = string.Empty;
                     }
                     else if (twoCharName.Contains('-', StringComparison.OrdinalIgnoreCase))
                     {
diff --git a/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs b/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs
index d3e7b52315..203e72de36 100644
--- a/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs
+++ b/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs
@@ -729,6 +729,9 @@ namespace MediaBrowser.MediaEncoding.Probing
                 stream.Type = MediaStreamType.Audio;
                 stream.LocalizedDefault = _localization.GetLocalizedString("Default");
                 stream.LocalizedExternal = _localization.GetLocalizedString("External");
+                stream.LocalizedLanguage = !string.IsNullOrEmpty(stream.Language)
+                    ? _localization.FindLanguageInfo(stream.Language)?.DisplayName
+                    : null;
 
                 stream.Channels = streamInfo.Channels;
 
@@ -767,6 +770,9 @@ namespace MediaBrowser.MediaEncoding.Probing
                 stream.LocalizedForced = _localization.GetLocalizedString("Forced");
                 stream.LocalizedExternal = _localization.GetLocalizedString("External");
                 stream.LocalizedHearingImpaired = _localization.GetLocalizedString("HearingImpaired");
+                stream.LocalizedLanguage = !string.IsNullOrEmpty(stream.Language)
+                    ? _localization.FindLanguageInfo(stream.Language)?.DisplayName
+                    : null;
 
                 if (string.IsNullOrEmpty(stream.Title))
                 {
diff --git a/MediaBrowser.Model/Entities/MediaStream.cs b/MediaBrowser.Model/Entities/MediaStream.cs
index 11f81ff7d8..4491fb5ace 100644
--- a/MediaBrowser.Model/Entities/MediaStream.cs
+++ b/MediaBrowser.Model/Entities/MediaStream.cs
@@ -5,7 +5,6 @@ using System;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Globalization;
-using System.Linq;
 using System.Text;
 using System.Text.Json.Serialization;
 using Jellyfin.Data.Enums;
diff --git a/tests/Jellyfin.Server.Implementations.Tests/Localization/LocalizationManagerTests.cs b/tests/Jellyfin.Server.Implementations.Tests/Localization/LocalizationManagerTests.cs
index e60522bf78..700ac5dced 100644
--- a/tests/Jellyfin.Server.Implementations.Tests/Localization/LocalizationManagerTests.cs
+++ b/tests/Jellyfin.Server.Implementations.Tests/Localization/LocalizationManagerTests.cs
@@ -41,7 +41,7 @@ namespace Jellyfin.Server.Implementations.Tests.Localization
             await localizationManager.LoadAll();
             var cultures = localizationManager.GetCultures().ToList();
 
-            Assert.Equal(194, cultures.Count);
+            Assert.Equal(496, cultures.Count);
 
             var germany = cultures.FirstOrDefault(x => x.TwoLetterISOLanguageName.Equals("de", StringComparison.Ordinal));
             Assert.NotNull(germany);
@@ -99,6 +99,25 @@ namespace Jellyfin.Server.Implementations.Tests.Localization
             Assert.Contains("ger", germany.ThreeLetterISOLanguageNames);
         }
 
+        [Theory]
+        [InlineData("mul", "Multiple languages")]
+        [InlineData("und", "Undetermined")]
+        [InlineData("mis", "Uncoded languages")]
+        [InlineData("zxx", "No linguistic content; Not applicable")]
+        public async Task FindLanguageInfo_ISO6392Only_Success(string code, string expectedDisplayName)
+        {
+            var localizationManager = Setup(new ServerConfiguration
+            {
+                UICulture = "en-US"
+            });
+            await localizationManager.LoadAll();
+
+            var culture = localizationManager.FindLanguageInfo(code);
+            Assert.NotNull(culture);
+            Assert.Equal(expectedDisplayName, culture.DisplayName);
+            Assert.Equal(code, culture.ThreeLetterISOLanguageName);
+        }
+
         [Fact]
         public async Task GetParentalRatings_Default_Success()
         {