music lyricist, writer

MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs

@@ -496,6 +496,26 @@ namespace MediaBrowser.MediaEncoding.Probing
                 }
             }
 
+            var lyricist = FFProbeHelpers.GetDictionaryValue(tags, "lyricist");
+
+            if (!string.IsNullOrWhiteSpace(lyricist))
+            {
+                foreach (var person in Split(lyricist, false))
+                {
+                    audio.People.Add(new BaseItemPerson { Name = person, Type = PersonType.Lyricist });
+                }
+            }
+            // Check for writer some music is tagged that way as alternative to composer/lyricist
+            var writer = FFProbeHelpers.GetDictionaryValue(tags, "writer");
+
+            if (!string.IsNullOrWhiteSpace(writer))
+            {
+                foreach (var person in Split(writer, false))
+                {
+                    audio.People.Add(new BaseItemPerson { Name = person, Type = PersonType.Writer });
+                }
+            }
+
             audio.Album = FFProbeHelpers.GetDictionaryValue(tags, "album");
 
             var artists = FFProbeHelpers.GetDictionaryValue(tags, "artists");

MediaBrowser.Model/Entities/PersonType.cs

@@ -34,5 +34,9 @@ namespace MediaBrowser.Model.Entities
         /// The conductor
         /// </summary>
         public const string Conductor = "Conductor";
+        /// <summary>
+        /// The lyricist
+        /// </summary>
+        public const string Lyricist = "Lyricist";
     }
 }