- boost::shared_ptr<PlayerVideoFrame> black_player_video_frame () const;
- boost::shared_ptr<PlayerVideoFrame> content_to_player_video_frame (
- boost::shared_ptr<VideoContent> content,
- ContentVideo content_video,
- std::list<boost::shared_ptr<Piece> > subs,
- DCPTime time,
- dcp::Size image_size
- ) const;