diff --git a/MediaBrowser.Api/Playback/BaseStreamingService.cs b/MediaBrowser.Api/Playback/BaseStreamingService.cs
index 73518afe16..e31a112d5a 100644
--- a/MediaBrowser.Api/Playback/BaseStreamingService.cs
+++ b/MediaBrowser.Api/Playback/BaseStreamingService.cs
@@ -256,7 +256,10 @@ namespace MediaBrowser.Api.Playback
 
             if (state.SubtitleStream != null)
             {
-                if (state.SubtitleStream.Codec.IndexOf("srt", StringComparison.OrdinalIgnoreCase) != -1 || state.SubtitleStream.Codec.IndexOf("subrip", StringComparison.OrdinalIgnoreCase) != -1)
+                if (state.SubtitleStream.Codec.IndexOf("srt", StringComparison.OrdinalIgnoreCase) != -1 ||
+                    state.SubtitleStream.Codec.IndexOf("subrip", StringComparison.OrdinalIgnoreCase) != -1 ||
+                    string.Equals(state.SubtitleStream.Codec, "ass", StringComparison.OrdinalIgnoreCase) ||
+                    string.Equals(state.SubtitleStream.Codec, "ssa", StringComparison.OrdinalIgnoreCase))
                 {
                     assSubtitleParam = GetTextSubtitleParam((Video)state.Item, state.SubtitleStream, request.StartTimeTicks, performTextSubtitleConversion);
                 }
diff --git a/MediaBrowser.Controller/Entities/Folder.cs b/MediaBrowser.Controller/Entities/Folder.cs
index 855bbb2058..77cdfa0855 100644
--- a/MediaBrowser.Controller/Entities/Folder.cs
+++ b/MediaBrowser.Controller/Entities/Folder.cs
@@ -951,15 +951,39 @@ namespace MediaBrowser.Controller.Entities
                 return result;
             }
 
-            var children = Children;
+            return GetChildrenList(user, includeLinkedChildren);
+        }
+
+        /// <summary>
+        /// Gets the children list.
+        /// </summary>
+        /// <param name="user">The user.</param>
+        /// <param name="includeLinkedChildren">if set to <c>true</c> [include linked children].</param>
+        /// <returns>List{BaseItem}.</returns>
+        private List<BaseItem> GetChildrenList(User user, bool includeLinkedChildren)
+        {
+            var list = new List<BaseItem>();
+            
+            foreach (var child in Children)
+            {
+                if (child.IsVisible(user))
+                {
+                    list.Add(child);
+                }
+            }
 
             if (includeLinkedChildren)
             {
-                children = children.Concat(GetLinkedChildren());
+                foreach (var child in GetLinkedChildren())
+                {
+                    if (child.IsVisible(user))
+                    {
+                        list.Add(child);
+                    }
+                }
             }
 
-            // If indexed is false or the indexing function is null
-            return children.AsParallel().Where(c => c.IsVisible(user)).AsEnumerable();
+            return list;
         }
 
         /// <summary>
@@ -976,42 +1000,35 @@ namespace MediaBrowser.Controller.Entities
                 throw new ArgumentNullException();
             }
 
-            var children = GetRecursiveChildrenInternal(user, includeLinkedChildren);
+            var list = new List<BaseItem>(10000);
+
+            AddRecursiveChildrenInternal(user, includeLinkedChildren, list);
 
             if (includeLinkedChildren)
             {
-                children = children.Distinct();
+                list = list.Distinct().ToList();
             }
 
-            return children;
+            return list;
         }
 
         /// <summary>
-        /// Gets allowed recursive children of an item
+        /// Adds the recursive children internal.
         /// </summary>
         /// <param name="user">The user.</param>
         /// <param name="includeLinkedChildren">if set to <c>true</c> [include linked children].</param>
-        /// <returns>IEnumerable{BaseItem}.</returns>
-        /// <exception cref="System.ArgumentNullException"></exception>
-        private IEnumerable<BaseItem> GetRecursiveChildrenInternal(User user, bool includeLinkedChildren)
+        /// <param name="list">The list.</param>
+        private void AddRecursiveChildrenInternal(User user, bool includeLinkedChildren, List<BaseItem> list)
         {
-            if (user == null)
+            foreach (var item in GetChildrenList(user, includeLinkedChildren))
             {
-                throw new ArgumentNullException();
-            }
-
-            foreach (var item in GetChildren(user, includeLinkedChildren))
-            {
-                yield return item;
+                list.Add(item);
 
                 var subFolder = item as Folder;
 
                 if (subFolder != null)
                 {
-                    foreach (var subitem in subFolder.GetRecursiveChildrenInternal(user, includeLinkedChildren))
-                    {
-                        yield return subitem;
-                    }
+                    subFolder.AddRecursiveChildrenInternal(user, includeLinkedChildren, list);
                 }
             }
         }
diff --git a/MediaBrowser.Providers/MediaInfo/FFProbeVideoInfoProvider.cs b/MediaBrowser.Providers/MediaInfo/FFProbeVideoInfoProvider.cs
index f39f6bec58..59c3d75e52 100644
--- a/MediaBrowser.Providers/MediaInfo/FFProbeVideoInfoProvider.cs
+++ b/MediaBrowser.Providers/MediaInfo/FFProbeVideoInfoProvider.cs
@@ -482,7 +482,7 @@ namespace MediaBrowser.Providers.MediaInfo
                         Type = MediaStreamType.Subtitle,
                         IsExternal = true,
                         Path = fullName,
-                        Codec = "srt",
+                        Codec = Path.GetExtension(fullName).ToLower().TrimStart('.'),
                         Language = language
                     });
                 }
diff --git a/Nuget/MediaBrowser.Common.Internal.nuspec b/Nuget/MediaBrowser.Common.Internal.nuspec
index 00c31ba5e2..daa03d1cd1 100644
--- a/Nuget/MediaBrowser.Common.Internal.nuspec
+++ b/Nuget/MediaBrowser.Common.Internal.nuspec
@@ -2,7 +2,7 @@
 <package xmlns="http://schemas.microsoft.com/packaging/2011/08/nuspec.xsd">
     <metadata>
         <id>MediaBrowser.Common.Internal</id>
-        <version>3.0.203</version>
+        <version>3.0.204</version>
         <title>MediaBrowser.Common.Internal</title>
         <authors>Luke</authors>
         <owners>ebr,Luke,scottisafool</owners>
@@ -12,7 +12,7 @@
         <description>Contains common components shared by Media Browser Theater and Media Browser Server. Not intended for plugin developer consumption.</description>
         <copyright>Copyright © Media Browser 2013</copyright>
         <dependencies>
-            <dependency id="MediaBrowser.Common" version="3.0.203" />
+            <dependency id="MediaBrowser.Common" version="3.0.204" />
             <dependency id="NLog" version="2.0.1.2" />
             <dependency id="ServiceStack.Text" version="3.9.58" />
             <dependency id="SimpleInjector" version="2.3.2" />
diff --git a/Nuget/MediaBrowser.Common.nuspec b/Nuget/MediaBrowser.Common.nuspec
index 94d3b61312..500f5c84f2 100644
--- a/Nuget/MediaBrowser.Common.nuspec
+++ b/Nuget/MediaBrowser.Common.nuspec
@@ -2,7 +2,7 @@
 <package xmlns="http://schemas.microsoft.com/packaging/2011/08/nuspec.xsd">
     <metadata>
         <id>MediaBrowser.Common</id>
-        <version>3.0.203</version>
+        <version>3.0.204</version>
         <title>MediaBrowser.Common</title>
         <authors>Media Browser Team</authors>
         <owners>ebr,Luke,scottisafool</owners>
diff --git a/Nuget/MediaBrowser.Server.Core.nuspec b/Nuget/MediaBrowser.Server.Core.nuspec
index 72aa871bfb..44f8acd09b 100644
--- a/Nuget/MediaBrowser.Server.Core.nuspec
+++ b/Nuget/MediaBrowser.Server.Core.nuspec
@@ -2,7 +2,7 @@
 <package xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd">
     <metadata>
         <id>MediaBrowser.Server.Core</id>
-        <version>3.0.203</version>
+        <version>3.0.204</version>
         <title>Media Browser.Server.Core</title>
         <authors>Media Browser Team</authors>
         <owners>ebr,Luke,scottisafool</owners>
@@ -12,7 +12,7 @@
         <description>Contains core components required to build plugins for Media Browser Server.</description>
         <copyright>Copyright © Media Browser 2013</copyright>
         <dependencies>
-            <dependency id="MediaBrowser.Common" version="3.0.203" />
+            <dependency id="MediaBrowser.Common" version="3.0.204" />
         </dependencies>
     </metadata>
     <files>