std::list<PositionImage> transform_image_subtitles (std::list<ImageSubtitle>) const;
void update_subtitle_from_text ();
Frame dcp_to_content_video (boost::shared_ptr<const Piece> piece, DCPTime t) const;
DCPTime content_video_to_dcp (boost::shared_ptr<const Piece> piece, Frame f) const;
std::list<PositionImage> transform_image_subtitles (std::list<ImageSubtitle>) const;
void update_subtitle_from_text ();
Frame dcp_to_content_video (boost::shared_ptr<const Piece> piece, DCPTime t) const;
DCPTime content_video_to_dcp (boost::shared_ptr<const Piece> piece, Frame f) const;