Fixed: MediaInfo.AudioChannels for some eac3 and mp3 files

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

@@ -20,6 +20,7 @@ namespace NzbDrone.Core.MediaFiles.MediaInfo
         public int AudioStreamCount { get; set; }
         public int AudioChannels { get; set; }
         public string AudioChannelPositions { get; set; }
+        public string AudioChannelPositionsText { get; set; }
         public string AudioProfile { get; set; }
         public decimal VideoFps { get; set; }
         public string AudioLanguages { get; set; }
@@ -34,7 +35,17 @@ namespace NzbDrone.Core.MediaFiles.MediaInfo
             {
                 if (AudioChannelPositions.IsNullOrWhiteSpace())
                 {
-                    return 0;
+                    if (AudioChannelPositionsText.IsNullOrWhiteSpace())
+                    {
+                        if (SchemaRevision >= 3)
+                        {
+                            return AudioChannels;
+                        }
+
+                        return 0;
+                    }
+
+                    return AudioChannelPositionsText.ContainsIgnoreCase("LFE") ? AudioChannels - 1 + 0.1m : AudioChannels;
                 }
 
                 return AudioChannelPositions.Split('/').Sum(s => decimal.Parse(s, CultureInfo.InvariantCulture));

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

@@ -18,7 +18,7 @@ namespace NzbDrone.Core.MediaFiles.MediaInfo
         private readonly IConfigService _configService;
         private readonly Logger _logger;
 
-        private const int CURRENT_MEDIA_INFO_SCHEMA_REVISION = 2;
+        private const int CURRENT_MEDIA_INFO_SCHEMA_REVISION = 3;
 
         public UpdateMediaInfoService(IDiskProvider diskProvider,
                                 IMediaFileService mediaFileService,

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

@@ -30,7 +30,9 @@ namespace NzbDrone.Core.MediaFiles.MediaInfo
         public MediaInfoModel GetMediaInfo(string filename)
         {
             if (!_diskProvider.FileExists(filename))
+            {
                 throw new FileNotFoundException("Media file does not exist: " + filename);
+            }
 
             MediaInfo mediaInfo = null;
 
@@ -124,6 +126,7 @@ namespace NzbDrone.Core.MediaFiles.MediaInfo
                     }
 
                     var audioChannelPositions = mediaInfo.Get(StreamKind.Audio, 0, "ChannelPositions/String2");
+                    var audioChannelPositionsText = mediaInfo.Get(StreamKind.Audio, 0, "ChannelPositions");
 
                     string audioLanguages = mediaInfo.Get(StreamKind.General, 0, "Audio_Language_List");
                     string audioProfile = mediaInfo.Get(StreamKind.Audio, 0, "Format_Profile");
@@ -149,6 +152,7 @@ namespace NzbDrone.Core.MediaFiles.MediaInfo
                                                     AudioStreamCount = streamCount,
                                                     AudioChannels = audioChannels,
                                                     AudioChannelPositions = audioChannelPositions,
+                                                    AudioChannelPositionsText = audioChannelPositionsText,
                                                     AudioProfile = audioProfile.Trim(),
                                                     VideoFps = videoFrameRate,
                                                     AudioLanguages = audioLanguages,