void text (PlayerText, TextType, boost::optional<DCPTextTrack>, dcpomatic::DCPTimePeriod);
void atmos (std::shared_ptr<const dcp::AtmosFrame>, dcpomatic::DCPTime, AtmosMetadata metadata);
void text (PlayerText, TextType, boost::optional<DCPTextTrack>, dcpomatic::DCPTimePeriod);
void atmos (std::shared_ptr<const dcp::AtmosFrame>, dcpomatic::DCPTime, AtmosMetadata metadata);