Merge pull request #10062 from lonebyte/m4a-metadata-probing-fix

MediaBrowser.Providers/MediaInfo/AudioFileProber.cs

@@ -223,30 +223,39 @@ namespace MediaBrowser.Providers.MediaInfo
                     var albumArtists = tags.AlbumArtists;
                     foreach (var albumArtist in albumArtists)
                     {
-                        PeopleHelper.AddPerson(people, new PersonInfo
+                        if (!string.IsNullOrEmpty(albumArtist))
                         {
-                            Name = albumArtist,
-                            Type = PersonKind.AlbumArtist
-                        });
+                            PeopleHelper.AddPerson(people, new PersonInfo
+                            {
+                                Name = albumArtist,
+                                Type = PersonKind.AlbumArtist
+                            });
+                        }
                     }
 
                     var performers = tags.Performers;
                     foreach (var performer in performers)
                     {
-                        PeopleHelper.AddPerson(people, new PersonInfo
+                        if (!string.IsNullOrEmpty(performer))
                         {
-                            Name = performer,
-                            Type = PersonKind.Artist
-                        });
+                            PeopleHelper.AddPerson(people, new PersonInfo
+                            {
+                                Name = performer,
+                                Type = PersonKind.Artist
+                            });
+                        }
                     }
 
                     foreach (var composer in tags.Composers)
                     {
-                        PeopleHelper.AddPerson(people, new PersonInfo
+                        if (!string.IsNullOrEmpty(composer))
                         {
-                            Name = composer,
-                            Type = PersonKind.Composer
-                        });
+                            PeopleHelper.AddPerson(people, new PersonInfo
+                            {
+                                Name = composer,
+                                Type = PersonKind.Composer
+                            });
+                        }
                     }
 
                     _libraryManager.UpdatePeople(audio, people);