film->set_interop (false);
BOOST_CHECK_EQUAL (film->isdcf_name(false), "MyNiceFilmWith_TLR-2_S_DE-fr_US-R_MOS_4K_DI_20140704_PPF_SMPTE_OV");
film->set_interop (false);
BOOST_CHECK_EQUAL (film->isdcf_name(false), "MyNiceFilmWith_TLR-2_S_DE-fr_US-R_MOS_4K_DI_20140704_PPF_SMPTE_OV");