film->set_marker(dcp::Marker::FFOC, dcpomatic::DCPTime::from_frames(1, 24));
film->set_marker(dcp::Marker::FFMC, dcpomatic::DCPTime::from_seconds(9.4));
film->set_marker(dcp::Marker::FFOC, dcpomatic::DCPTime::from_frames(1, 24));
film->set_marker(dcp::Marker::FFMC, dcpomatic::DCPTime::from_seconds(9.4));