+
+shared_ptr<Content>
+FFmpegContent::clone () const
+{
+ return shared_ptr<Content> (new FFmpegContent (*this));
+}
+
+Time
+FFmpegContent::length () const
+{
+ shared_ptr<const Film> film = _film.lock ();
+ assert (film);
+
+ FrameRateConversion frc (video_frame_rate (), film->dcp_video_frame_rate ());
+ return video_length() * frc.factor() * TIME_HZ / film->dcp_video_frame_rate ();
+}
+
+AudioMapping
+FFmpegContent::audio_mapping () const
+{
+ boost::mutex::scoped_lock lm (_mutex);
+
+ if (!_audio_stream) {
+ return AudioMapping ();
+ }
+
+ return _audio_stream->mapping;
+}
+
+void
+FFmpegContent::set_filters (vector<Filter const *> const & filters)
+{
+ {
+ boost::mutex::scoped_lock lm (_mutex);
+ _filters = filters;
+ }
+
+ signal_changed (FFmpegContentProperty::FILTERS);
+}
+
+void
+FFmpegContent::set_audio_mapping (AudioMapping m)
+{
+ audio_stream()->mapping = m;
+ signal_changed (AudioContentProperty::AUDIO_MAPPING);
+}
+
+string
+FFmpegContent::identifier () const
+{
+ stringstream s;
+
+ s << VideoContent::identifier();
+
+ boost::mutex::scoped_lock lm (_mutex);
+
+ if (_subtitle_stream) {
+ s << "_" << _subtitle_stream->id;
+ }
+
+ for (vector<Filter const *>::const_iterator i = _filters.begin(); i != _filters.end(); ++i) {
+ s << "_" << (*i)->id ();
+ }
+
+ return s.str ();
+}