+void
+Film::set_subtitle_language (dcp::LanguageTag language)
+{
+ vector<dcp::LanguageTag> lang;
+ lang.push_back (language);
+ set_subtitle_languages (lang);
+}
+
+
+void
+Film::unset_subtitle_language ()
+{
+ ChangeSignaller<Film> ch (this, SUBTITLE_LANGUAGES);
+ _subtitle_languages.clear();
+}
+
+
+void
+Film::set_subtitle_languages (vector<dcp::LanguageTag> languages)
+{
+ ChangeSignaller<Film> ch (this, SUBTITLE_LANGUAGES);
+ _subtitle_languages = languages;
+}
+
+