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diff --git a/src/lib/examine_content_job.h b/src/lib/examine_content_job.h
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+++ b/src/lib/examine_content_job.h
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+/*
+    Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+/** @file  src/examine_content_job.h
+ *  @brief A class to run through content at high speed to find its length.
+ */
+
+#include "job.h"
+
+class Decoder;
+
+/** @class ExamineContentJob
+ *  @brief A class to run through content at high speed to find its length.
+ */
+class ExamineContentJob : public Job
+{
+public:
+	ExamineContentJob (boost::shared_ptr<const FilmState>, Log *);
+	~ExamineContentJob ();
+
+	std::string name () const;
+	void run ();
+
+	int last_video_frame () const;
+
+private:
+	boost::shared_ptr<Decoder> _decoder;
+};
+