diff --git a/test/test_youtube_signature.py b/test/test_youtube_signature.py
index b0f3269e1c..a14bef511e 100644
--- a/test/test_youtube_signature.py
+++ b/test/test_youtube_signature.py
@@ -167,6 +167,10 @@
         'https://www.youtube.com/s/player/590f65a6/player_ias.vflset/en_US/base.js',
         '1tm7-g_A9zsI8_Lay_', 'xI4Vem4Put_rOg',
     ),
+    (
+        'https://www.youtube.com/s/player/b22ef6e7/player_ias.vflset/en_US/base.js',
+        'b6HcntHGkvBLk_FRf', 'kNPW6A7FyP2l8A',
+    ),
 ]
 
 
diff --git a/yt_dlp/extractor/youtube.py b/yt_dlp/extractor/youtube.py
index 18e0ee91c7..bb043afab8 100644
--- a/yt_dlp/extractor/youtube.py
+++ b/yt_dlp/extractor/youtube.py
@@ -3130,7 +3130,8 @@ def _decrypt_nsig(self, s, video_id, player_url):
 
     def _extract_n_function_name(self, jscode):
         funcname, idx = self._search_regex(
-            r'\.get\("n"\)\)&&\(b=(?P<nfunc>[a-zA-Z0-9$]+)(?:\[(?P<idx>\d+)\])?\([a-zA-Z0-9]\)',
+            r'''(?x)(?:\.get\("n"\)\)&&\(b=|b=String\.fromCharCode\(110\),c=a\.get\(b\)\)&&\(c=)
+            (?P<nfunc>[a-zA-Z0-9$]+)(?:\[(?P<idx>\d+)\])?\([a-zA-Z0-9]\)''',
             jscode, 'Initial JS player n function name', group=('nfunc', 'idx'))
         if not idx:
             return funcname