+ # titel is too generic in some cases so utilize aflevering_titel as well
+ # when available (e.g. http://tegenlicht.vpro.nl/afleveringen/2014-2015/access-to-africa.html)
+ title = metadata['titel']
+ sub_title = metadata.get('aflevering_titel')
+ if sub_title and sub_title != title:
+ title += ': %s' % sub_title
+