- void process_video (boost::shared_ptr<Image> i, bool, boost::shared_ptr<Subtitle> s);
- void process_video_b (boost::shared_ptr<Image> i, bool, boost::shared_ptr<Subtitle> s);
+ void process_video (boost::shared_ptr<const Image> i, bool, Time);
+ void process_video_b (boost::shared_ptr<const Image> i, bool, Time);