diff --git a/src/YouTubeVideoUrl.py b/src/YouTubeVideoUrl.py
index d9ec948..6b078a1 100644
--- a/src/YouTubeVideoUrl.py
+++ b/src/YouTubeVideoUrl.py
@@ -372,8 +372,10 @@ def _extract_signature_timestamp(self):
 
 	def _extract_visitor_id(self, video_id):
 		webpage = self._download_webpage('https://www.youtube.com/watch?v=%s&bpctr=9999999999&has_verified=1' % video_id)
+		print('[YouTubeVideoUrl] extract_visitor_id')
 		if webpage:
-			ytcfg = search(r'ytcfg\.set\s*\(\s*({[^}]+})\s*\)\s*;', webpage)
+			print('[YouTubeVideoUrl] search webpage')
+			ytcfg = search(r'ytcfg\.set\s*\(\s*({.+?})\s*\)\s*;', webpage)
 			if ytcfg:
 				data = loads(ytcfg.group(1))
 				print('[YouTubeVideoUrl] visitor data0', data.get('VISITOR_DATA'))