2 files changed, 9 insertions, 2 deletions
diff --git a/MediaBrowser.MediaEncoding/MediaBrowser.MediaEncoding.csproj b/MediaBrowser.MediaEncoding/MediaBrowser.MediaEncoding.csproj
index c0f92ac4a..fdb20477f 100644
--- a/MediaBrowser.MediaEncoding/MediaBrowser.MediaEncoding.csproj
+++ b/MediaBrowser.MediaEncoding/MediaBrowser.MediaEncoding.csproj
@@ -3,6 +3,7 @@
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
+    <GenerateDocumentationFile>true</GenerateDocumentationFile>
   </PropertyGroup>
 
   <ItemGroup>
@@ -18,7 +19,7 @@
 
   <ItemGroup>
     <PackageReference Include="System.Text.Encoding.CodePages" Version="4.5.1" />
-    <PackageReference Include="UTF.Unknown" Version="1.0.0" />
+    <PackageReference Include="UTF.Unknown" Version="2.0.0" />
   </ItemGroup>
 
 </Project>
diff --git a/MediaBrowser.MediaEncoding/Subtitles/SubtitleEncoder.cs b/MediaBrowser.MediaEncoding/Subtitles/SubtitleEncoder.cs
index 8677b363f..9ddfb9b01 100644
--- a/MediaBrowser.MediaEncoding/Subtitles/SubtitleEncoder.cs
+++ b/MediaBrowser.MediaEncoding/Subtitles/SubtitleEncoder.cs
@@ -425,7 +425,13 @@ namespace MediaBrowser.MediaEncoding.Subtitles
 
             var encodingParam = await GetSubtitleFileCharacterSet(inputPath, language, inputProtocol, cancellationToken).ConfigureAwait(false);
 
-            if (!string.IsNullOrEmpty(encodingParam))
+            // FFmpeg automatically convert character encoding when it is UTF-16
+            // If we specify character encoding, it rejects with "do not specify a character encoding" and "Unable to recode subtitle event"
+            if ((inputPath.EndsWith(".smi") || inputPath.EndsWith(".sami")) && (encodingParam == "UTF-16BE" || encodingParam == "UTF-16LE"))
+            {
+                encodingParam = "";
+            }
+            else if (!string.IsNullOrEmpty(encodingParam))
             {
                 encodingParam = " -sub_charenc " + encodingParam;
             }