class AcademicEarthCourseIE(InfoExtractor):
- _VALID_URL = r'^https?://(?:www\.)?academicearth\.org/courses/(?P<id>[^?#/]+)'
+ _VALID_URL = r'^https?://(?:www\.)?academicearth\.org/(?:courses|playlists)/(?P<id>[^?#/]+)'
IE_NAME = u'AcademicEarth:Course'
def _real_extract(self, url):