added new cabac value

MediaBrowser.Model/Entities/MediaStream.cs

@@ -175,5 +175,11 @@ namespace MediaBrowser.Model.Entities
         /// </summary>
         /// <value><c>true</c> if this instance is anamorphic; otherwise, <c>false</c>.</value>
         public bool? IsAnamorphic { get; set; }
+
+        /// <summary>
+        /// Gets or sets a value indicating whether this instance is cabac.
+        /// </summary>
+        /// <value><c>null</c> if [is cabac] contains no value, <c>true</c> if [is cabac]; otherwise, <c>false</c>.</value>
+        public bool? IsCabac { get; set; }
     }
 }