Check videoRotation in video stream copy

Signed-off-by: nyanmisaka <nst799610810@gmail.com>

MediaBrowser.Controller/MediaEncoding/BaseEncodingJobOptions.cs

@@ -91,6 +91,12 @@ namespace MediaBrowser.Controller.MediaEncoding
         /// <value>The codec tag.</value>
         public string CodecTag { get; set; }
 
+        /// <summary>
+        /// Gets or sets the rotation.
+        /// </summary>
+        /// <value>The video rotation angle, usually 0 or +-90/180.</value>
+        public string Rotation { get; set; }
+
         /// <summary>
         /// Gets or sets the framerate.
         /// </summary>