void text (PlayerText pt, TextType type, boost::optional<DCPTextTrack> track, DCPTimePeriod period);
bool should_run () const;
void prepare (boost::weak_ptr<PlayerVideo> video) const;
void text (PlayerText pt, TextType type, boost::optional<DCPTextTrack> track, DCPTimePeriod period);
bool should_run () const;
void prepare (boost::weak_ptr<PlayerVideo> video) const;