Looks like Google switched to a new JS compiler that includes dollar signs in function names.

2015-01-15 10:23:05 -08:00 · 2015-01-15 10:23:05 -08:00 · a9b6b5cd15
parent a45c0a5d67
commit a9b6b5cd15
1 changed files with 1 additions and 1 deletions
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@ -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)