class TechTalksIE(InfoExtractor):
- _VALID_URL = r'https?://techtalks\.tv/talks/[^/]*/(?P<id>\d+)/'
+ _VALID_URL = r'https?://techtalks\.tv/talks/(?:[^/]*/)?(?P<id>\d+)/'
_TEST = {
'url': 'http://techtalks.tv/talks/learning-topic-models-going-beyond-svd/57758/',