+ if (_film->last_written_by_earlier_than(2, 16, 15)) {
+ for (auto c: content) {
+ if (auto stf = dynamic_pointer_cast<StringTextFileContent>(c)) {
+ stf->check_font_ids();
+ } else if (auto dcp = dynamic_pointer_cast<DCPContent>(c)) {
+ dcp->check_font_ids();
+ }
+ }
+ }
+