extract ref frame count using ffprobe

MediaBrowser.MediaEncoding/Probing/InternalMediaInfoResult.cs

@@ -114,6 +114,12 @@ namespace MediaBrowser.MediaEncoding.Probing
         /// <value>The width.</value>
         public int width { get; set; }
 
+        /// <summary>
+        /// Gets or sets the refs.
+        /// </summary>
+        /// <value>The refs.</value>
+        public int refs { get; set; }
+
         /// <summary>
         /// Gets or sets the height.
         /// </summary>

MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs

@@ -130,13 +130,18 @@ namespace MediaBrowser.MediaEncoding.Probing
             var stream = new MediaStream
             {
                 Codec = streamInfo.codec_name,
-                CodecTag = streamInfo.codec_tag_string,
                 Profile = streamInfo.profile,
                 Level = streamInfo.level,
                 Index = streamInfo.index,
                 PixelFormat = streamInfo.pix_fmt
             };
 
+            // Filter out junk
+            if (!string.IsNullOrWhiteSpace(streamInfo.codec_tag_string) && streamInfo.codec_tag_string.IndexOf("[0]", StringComparison.OrdinalIgnoreCase) == -1)
+            {
+                stream.CodecTag = streamInfo.codec_tag_string;
+            }
+
             if (streamInfo.tags != null)
             {
                 stream.Language = GetDictionaryValue(streamInfo.tags, "language");
@@ -184,6 +189,11 @@ namespace MediaBrowser.MediaEncoding.Probing
 
                 // http://stackoverflow.com/questions/17353387/how-to-detect-anamorphic-video-with-ffprobe
                 stream.IsAnamorphic = string.Equals(streamInfo.sample_aspect_ratio, "0:1", StringComparison.OrdinalIgnoreCase);
+
+                if (streamInfo.refs > 0)
+                {
+                    stream.RefFrames = streamInfo.refs;
+                }
             }
             else
             {
@@ -922,9 +932,7 @@ namespace MediaBrowser.MediaEncoding.Probing
 
         private void UpdateFromMediaInfo(MediaSourceInfo video, MediaStream videoStream)
         {
-            if (video.Protocol == MediaProtocol.File)
-            {
-                if (videoStream != null)
+            if (video.Protocol == MediaProtocol.File && videoStream != null)
             {
                 try
                 {
@@ -935,7 +943,11 @@ namespace MediaBrowser.MediaEncoding.Probing
                     videoStream.IsCabac = result.IsCabac ?? videoStream.IsCabac;
                     videoStream.IsInterlaced = result.IsInterlaced ?? videoStream.IsInterlaced;
                     videoStream.BitDepth = result.BitDepth ?? videoStream.BitDepth;
-                        videoStream.RefFrames = result.RefFrames;
+                    videoStream.RefFrames = result.RefFrames ?? videoStream.RefFrames;
+                }
+                catch (TypeLoadException)
+                {
+                    // This is non-essential. Don't spam the log
                 }
                 catch (Exception ex)
                 {
@@ -945,4 +957,3 @@ namespace MediaBrowser.MediaEncoding.Probing
         }
     }
 }
-}