Default to filename if there is no SceneName. And added Opus and MPEG-4 Visual.

src/NzbDrone.Core/Extras/Metadata/Consumers/Xbmc/XbmcMetadata.cs

@@ -242,13 +242,15 @@ namespace NzbDrone.Core.Extras.Metadata.Consumers.Xbmc
 
                     if (episodeFile.MediaInfo != null)
                     {
+                        var sceneName = episodeFile.GetSceneOrFileName();
+
                         var fileInfo = new XElement("fileinfo");
                         var streamDetails = new XElement("streamdetails");
 
                         var video = new XElement("video");
                         video.Add(new XElement("aspect", (float)episodeFile.MediaInfo.Width / (float)episodeFile.MediaInfo.Height));
                         video.Add(new XElement("bitrate", episodeFile.MediaInfo.VideoBitrate));
-                        video.Add(new XElement("codec", MediaInfoFormatter.FormatVideoCodec(episodeFile.MediaInfo, episodeFile.SceneName)));
+                        video.Add(new XElement("codec", MediaInfoFormatter.FormatVideoCodec(episodeFile.MediaInfo, sceneName)));
                         video.Add(new XElement("framerate", episodeFile.MediaInfo.VideoFps));
                         video.Add(new XElement("height", episodeFile.MediaInfo.Height));
                         video.Add(new XElement("scantype", episodeFile.MediaInfo.ScanType));
@@ -265,7 +267,7 @@ namespace NzbDrone.Core.Extras.Metadata.Consumers.Xbmc
                         var audio = new XElement("audio");
                         audio.Add(new XElement("bitrate", episodeFile.MediaInfo.AudioBitrate));
                         audio.Add(new XElement("channels", episodeFile.MediaInfo.AudioChannels));
-                        audio.Add(new XElement("codec", MediaInfoFormatter.FormatAudioCodec(episodeFile.MediaInfo, episodeFile.SceneName)));
+                        audio.Add(new XElement("codec", MediaInfoFormatter.FormatAudioCodec(episodeFile.MediaInfo, sceneName)));
                         audio.Add(new XElement("language", episodeFile.MediaInfo.AudioLanguages));
                         streamDetails.Add(audio);
 

src/NzbDrone.Core/MediaFiles/EpisodeFile.cs

@@ -5,6 +5,7 @@ using NzbDrone.Core.Datastore;
 using NzbDrone.Core.Qualities;
 using NzbDrone.Core.Tv;
 using NzbDrone.Core.MediaFiles.MediaInfo;
+using NzbDrone.Common.Extensions;
 
 namespace NzbDrone.Core.MediaFiles
 {
@@ -27,5 +28,20 @@ namespace NzbDrone.Core.MediaFiles
         {
             return string.Format("[{0}] {1}", Id, RelativePath);
         }
+
+        public string GetSceneOrFileName()
+        {
+            if (SceneName.IsNotNullOrWhiteSpace())
+            {
+                return SceneName;
+            }
+
+            if (RelativePath.IsNotNullOrWhiteSpace())
+            {
+                return System.IO.Path.GetFileName(RelativePath);
+            }
+
+            return string.Empty;
+        }
     }
 }

src/NzbDrone.Core/MediaFiles/MediaInfo/MediaInfoFormatter.cs

@@ -84,6 +84,11 @@ namespace NzbDrone.Core.MediaFiles.MediaInfo
                 return "Vorbis";
             }
 
+            if (audioFormat.Equals("Opus", StringComparison.OrdinalIgnoreCase))
+            {
+                return "Opus";
+            }
+
             Logger.Error(new UnknownCodecException(audioFormat, sceneName), "Unknown audio format: {0} in '{1}'. Please notify Sonarr developers.", audioFormat, sceneName);
             return audioFormat;
         }
@@ -106,7 +111,7 @@ namespace NzbDrone.Core.MediaFiles.MediaInfo
 
             if (videoCodec == "V_MPEGH/ISO/HEVC" || videoCodec == "HEVC")
             {
-                return sceneName.IsNotNullOrWhiteSpace() && Path.GetFileNameWithoutExtension(sceneName).Contains("h265")
+                return sceneName.IsNotNullOrWhiteSpace() && Path.GetFileNameWithoutExtension(sceneName).ContainsIgnoreCase("h265")
                     ? "h265"
                     : "x265";
             }
@@ -116,6 +121,13 @@ namespace NzbDrone.Core.MediaFiles.MediaInfo
                 return "MPEG2";
             }
 
+            if (videoCodec == "MPEG-4 Visual")
+            {
+                return sceneName.IsNotNullOrWhiteSpace() && Path.GetFileNameWithoutExtension(sceneName).ContainsIgnoreCase("DivX")
+                    ? "DivX"
+                    : "XviD";
+            }
+
             if (videoCodec.StartsWith("XviD", StringComparison.OrdinalIgnoreCase))
             {
                 return "XviD";

src/NzbDrone.Core/Organizer/FileNameBuilder.cs

@@ -454,8 +454,10 @@ namespace NzbDrone.Core.Organizer
         {
             if (episodeFile.MediaInfo == null) return;
 
-            var videoCodec =  MediaInfoFormatter.FormatVideoCodec(episodeFile.MediaInfo, episodeFile.SceneName);
-            var audioCodec =  MediaInfoFormatter.FormatAudioCodec(episodeFile.MediaInfo, episodeFile.SceneName);
+            var sceneName = episodeFile.GetSceneOrFileName();
+
+            var videoCodec =  MediaInfoFormatter.FormatVideoCodec(episodeFile.MediaInfo, sceneName);
+            var audioCodec =  MediaInfoFormatter.FormatAudioCodec(episodeFile.MediaInfo, sceneName);
             var audioChannels = MediaInfoFormatter.FormatAudioChannels(episodeFile.MediaInfo);
 
             var mediaInfoAudioLanguages = GetLanguagesToken(episodeFile.MediaInfo.AudioLanguages);