film_content_changed (SubtitleContentProperty::SUBTITLE_X_OFFSET);
film_content_changed (SubtitleContentProperty::SUBTITLE_Y_OFFSET);
film_content_changed (SubtitleContentProperty::SUBTITLE_SCALE);
film_content_changed (SubtitleContentProperty::SUBTITLE_X_OFFSET);
film_content_changed (SubtitleContentProperty::SUBTITLE_Y_OFFSET);
film_content_changed (SubtitleContentProperty::SUBTITLE_SCALE);