Fix Youtube encrypted sigs.
@ -588,7 +588,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
def _parse_sig_js(self, jscode):
funcname = self._search_regex(
r'\.sig\|\|([a-zA-Z0-9]+)\(', jscode,
r'\.sig\|\|([a-zA-Z0-9\$]+)\(', jscode,
'Initial JS player signature function name')
jsi = JSInterpreter(jscode)