- screen_kdms = film->make_kdms (
- _screens->screens(), _cpl->cpl(), _timing->from(), _timing->until(), _output->formulation(),
- !_output->forensic_mark_video(), _output->forensic_mark_audio() ? boost::optional<int>() : 0
- );
-
+ for (auto i: _screens->screens()) {
+ KDMWithMetadataPtr p = kdm_for_screen (film, _cpl->cpl(), i, _timing->from(), _timing->until(), _output->formulation(), !_output->forensic_mark_video(), for_audio);
+ if (p) {
+ kdms.push_back (p);
+ }
+ }
+ } catch (dcp::BadKDMDateError& e) {
+ if (e.starts_too_early()) {
+ error_dialog (this, _("The KDM start period is before (or close to) the start of the signing certificate's validity period. Use a later start time for this KDM."));
+ } else {
+ error_dialog (this, _("The KDM end period is after (or close to) the end of the signing certficates' validity period. Either use an earlier end time for this KDM or re-create your signing certificates in the DCP-o-matic preferences window."));
+ }
+ return;