1 files changed, 36 insertions, 1 deletions
diff --git a/Jellyfin.Api/Controllers/FilterController.cs b/Jellyfin.Api/Controllers/FilterController.cs
index 2f53784db1..cfc8be28ae 100644
--- a/Jellyfin.Api/Controllers/FilterController.cs
+++ b/Jellyfin.Api/Controllers/FilterController.cs
@@ -8,6 +8,8 @@ using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Model.Dto;
+using MediaBrowser.Model.Entities;
+using MediaBrowser.Model.Globalization;
 using MediaBrowser.Model.Querying;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Http;
@@ -24,16 +26,19 @@ public class FilterController : BaseJellyfinApiController
 {
     private readonly ILibraryManager _libraryManager;
     private readonly IUserManager _userManager;
+    private readonly ILocalizationManager _localization;
 
     /// <summary>
     /// Initializes a new instance of the <see cref="FilterController"/> class.
     /// </summary>
     /// <param name="libraryManager">Instance of the <see cref="ILibraryManager"/> interface.</param>
     /// <param name="userManager">Instance of the <see cref="IUserManager"/> interface.</param>
-    public FilterController(ILibraryManager libraryManager, IUserManager userManager)
+    /// <param name="localization">Instance of the <see cref="ILocalizationManager"/> interface.</param>
+    public FilterController(ILibraryManager libraryManager, IUserManager userManager, ILocalizationManager localization)
     {
         _libraryManager = libraryManager;
         _userManager = userManager;
+        _localization = localization;
     }
 
     /// <summary>
@@ -183,6 +188,36 @@ public class FilterController : BaseJellyfinApiController
             }).ToArray();
         }
 
+        if (includeItemTypes.Contains(BaseItemKind.Movie) || includeItemTypes.Contains(BaseItemKind.Series))
+        {
+            filters.AudioLanguages = _libraryManager
+                .GetMediaStreamLanguages(MediaStreamType.Audio)
+                .Select(language =>
+                {
+                    var culture = _localization.FindLanguageInfo(language);
+                    return new NameValuePair
+                    {
+                        Name = culture is null ? language : $"{culture.DisplayName} ({language})",
+                        Value = language
+                    };
+                })
+                .OrderBy(l => l.Name)
+                .ToArray();
+            filters.SubtitleLanguages = _libraryManager
+                .GetMediaStreamLanguages(MediaStreamType.Subtitle)
+                .Select(language =>
+                {
+                    var culture = _localization.FindLanguageInfo(language);
+                    return new NameValuePair
+                    {
+                        Name = culture is null ? language : $"{culture.DisplayName} ({language})",
+                        Value = language
+                    };
+                })
+                .OrderBy(l => l.Name)
+                .ToArray();
+        }
+
         return filters;
     }
 }