content->set_position (film, DCPTime::from_seconds(13.9 / 24.0));
BOOST_CHECK (content->position() == DCPTime::from_seconds (14.0 / 24.0));
content->set_position (film, DCPTime::from_seconds(13.9 / 24.0));
BOOST_CHECK (content->position() == DCPTime::from_seconds (14.0 / 24.0));