film->examine_and_add_content (content_a);
shared_ptr<DCPContent> content_b (new DCPContent("test/data/burnt_subtitle_test_dcp"));
film->examine_and_add_content (content_b);
film->examine_and_add_content (content_a);
shared_ptr<DCPContent> content_b (new DCPContent("test/data/burnt_subtitle_test_dcp"));
film->examine_and_add_content (content_b);