update recording encoder

MediaBrowser.Controller/MediaEncoding/IMediaEncoder.cs

@@ -135,5 +135,8 @@ namespace MediaBrowser.Controller.MediaEncoding
         Task UpdateEncoderPath(string path, string pathType);
         bool SupportsEncoder(string encoder);
         bool IsDefaultEncoderPath { get; }
+
+        void SetLogFilename(string name);
+        void ClearLogFilename();
     }
 }