AVCodecContext* _subtitle_codec_context; ///< may be 0 if there is no subtitle
AVCodec* _subtitle_codec; ///< may be 0 if there is no subtitle
std::list<boost::shared_ptr<FilterGraph> > _filter_graphs;
boost::mutex _filter_graphs_mutex;
AVCodecContext* _subtitle_codec_context; ///< may be 0 if there is no subtitle
AVCodec* _subtitle_codec; ///< may be 0 if there is no subtitle
std::list<boost::shared_ptr<FilterGraph> > _filter_graphs;
boost::mutex _filter_graphs_mutex;