diff --git a/test/test_jsinterp.py b/test/test_jsinterp.py
index 444909b84..96274116b 100644
--- a/test/test_jsinterp.py
+++ b/test/test_jsinterp.py
@@ -66,9 +66,8 @@ class TestJSInterpreter(unittest.TestCase):
         self._test('function f(){var x = 20; x += 30 + 1; return x;}', 51)
         self._test('function f(){var x = 20; x -= 30 + 1; return x;}', -11)
 
+    @unittest.skip('Not implemented')
     def test_comments(self):
-        'Skipping: Not yet fully implemented'
-        return
         self._test('''
             function f() {
                 var x = /* 1 + */ 2;
@@ -100,10 +99,13 @@ class TestJSInterpreter(unittest.TestCase):
         jsi = JSInterpreter('function f() { return NaN }')
         self.assertTrue(math.isnan(jsi.call_function('f')))
 
-        self._test('function f() { return new Date("Wednesday 31 December 1969 18:01:26 MDT") - 0; }',
-                   86000)
-        self._test('function f(dt) { return new Date(dt) - 0; }',
-                   86000, args=['Wednesday 31 December 1969 18:01:26 MDT'])
+    def test_date(self):
+        self._test('function f() { return new Date("Wednesday 31 December 1969 18:01:26 MDT") - 0; }', 86000)
+
+        jsi = JSInterpreter('function f(dt) { return new Date(dt) - 0; }')
+        self.assertEqual(jsi.call_function('f', 'Wednesday 31 December 1969 18:01:26 MDT'), 86000)
+        self.assertEqual(jsi.call_function('f', '12/31/1969 18:01:26 MDT'), 86000)  # m/d/y
+        self.assertEqual(jsi.call_function('f', '1 January 1970 00:00:00 UTC'), 0)
 
     def test_call(self):
         jsi = JSInterpreter('''
@@ -286,6 +288,19 @@ class TestJSInterpreter(unittest.TestCase):
         jsi = JSInterpreter(R'function f() { let a=[/[)\\]/]; return a[0]; }')
         self.assertEqual(jsi.call_function('f').pattern, r'[)\\]')
 
+    @unittest.skip('Not implemented')
+    def test_replace(self):
+        self._test('function f() { let a="data-name".replace("data-", ""); return a }',
+                   'name')
+        self._test('function f() { let a="data-name".replace(new RegExp("^.+-"), ""); return a; }',
+                   'name')
+        self._test('function f() { let a="data-name".replace(/^.+-/, ""); return a; }',
+                   'name')
+        self._test('function f() { let a="data-name".replace(/a/g, "o"); return a; }',
+                   'doto-nome')
+        self._test('function f() { let a="data-name".replaceAll("a", "o"); return a; }',
+                   'doto-nome')
+
     def test_char_code_at(self):
         jsi = JSInterpreter('function f(i){return "test".charCodeAt(i)}')
         self.assertEqual(jsi.call_function('f', 0), 116)
@@ -311,6 +326,11 @@ class TestJSInterpreter(unittest.TestCase):
         self._test('function f(){return 2    -    + + - -2;}', 0)
         self._test('function f(){return 2    +    - + - -2;}', 0)
 
+    @unittest.skip('Not implemented')
+    def test_packed(self):
+        jsi = JSInterpreter('''function f(p,a,c,k,e,d){while(c--)if(k[c])p=p.replace(new RegExp('\\b'+c.toString(a)+'\\b','g'),k[c]);return p}''')
+        self.assertEqual(jsi.call_function('f', '''h 7=g("1j");7.7h({7g:[{33:"w://7f-7e-7d-7c.v.7b/7a/79/78/77/76.74?t=73&s=2s&e=72&f=2t&71=70.0.0.1&6z=6y&6x=6w"}],6v:"w://32.v.u/6u.31",16:"r%",15:"r%",6t:"6s",6r:"",6q:"l",6p:"l",6o:"6n",6m:\'6l\',6k:"6j",9:[{33:"/2u?b=6i&n=50&6h=w://32.v.u/6g.31",6f:"6e"}],1y:{6d:1,6c:\'#6b\',6a:\'#69\',68:"67",66:30,65:r,},"64":{63:"%62 2m%m%61%5z%5y%5x.u%5w%5v%5u.2y%22 2k%m%1o%22 5t%m%1o%22 5s%m%1o%22 2j%m%5r%22 16%m%5q%22 15%m%5p%22 5o%2z%5n%5m%2z",5l:"w://v.u/d/1k/5k.2y",5j:[]},\'5i\':{"5h":"5g"},5f:"5e",5d:"w://v.u",5c:{},5b:l,1x:[0.25,0.50,0.75,1,1.25,1.5,2]});h 1m,1n,5a;h 59=0,58=0;h 7=g("1j");h 2x=0,57=0,56=0;$.55({54:{\'53-52\':\'2i-51\'}});7.j(\'4z\',6(x){c(5>0&&x.1l>=5&&1n!=1){1n=1;$(\'q.4y\').4x(\'4w\')}});7.j(\'13\',6(x){2x=x.1l});7.j(\'2g\',6(x){2w(x)});7.j(\'4v\',6(){$(\'q.2v\').4u()});6 2w(x){$(\'q.2v\').4t();c(1m)19;1m=1;17=0;c(4s.4r===l){17=1}$.4q(\'/2u?b=4p&2l=1k&4o=2t-4n-4m-2s-4l&4k=&4j=&4i=&17=\'+17,6(2r){$(\'#4h\').4g(2r)});$(\'.3-8-4f-4e:4d("4c")\').2h(6(e){2q();g().4b(0);g().4a(l)});6 2q(){h $14=$("<q />").2p({1l:"49",16:"r%",15:"r%",48:0,2n:0,2o:47,46:"45(10%, 10%, 10%, 0.4)","44-43":"42"});$("<41 />").2p({16:"60%",15:"60%",2o:40,"3z-2n":"3y"}).3x({\'2m\':\'/?b=3w&2l=1k\',\'2k\':\'0\',\'2j\':\'2i\'}).2f($14);$14.2h(6(){$(3v).3u();g().2g()});$14.2f($(\'#1j\'))}g().13(0);}6 3t(){h 9=7.1b(2e);2d.2c(9);c(9.n>1){1r(i=0;i<9.n;i++){c(9[i].1a==2e){2d.2c(\'!!=\'+i);7.1p(i)}}}}7.j(\'3s\',6(){g().1h("/2a/3r.29","3q 10 28",6(){g().13(g().27()+10)},"2b");$("q[26=2b]").23().21(\'.3-20-1z\');g().1h("/2a/3p.29","3o 10 28",6(){h 12=g().27()-10;c(12<0)12=0;g().13(12)},"24");$("q[26=24]").23().21(\'.3-20-1z\');});6 1i(){}7.j(\'3n\',6(){1i()});7.j(\'3m\',6(){1i()});7.j("k",6(y){h 9=7.1b();c(9.n<2)19;$(\'.3-8-3l-3k\').3j(6(){$(\'#3-8-a-k\').1e(\'3-8-a-z\');$(\'.3-a-k\').p(\'o-1f\',\'11\')});7.1h("/3i/3h.3g","3f 3e",6(){$(\'.3-1w\').3d(\'3-8-1v\');$(\'.3-8-1y, .3-8-1x\').p(\'o-1g\',\'11\');c($(\'.3-1w\').3c(\'3-8-1v\')){$(\'.3-a-k\').p(\'o-1g\',\'l\');$(\'.3-a-k\').p(\'o-1f\',\'l\');$(\'.3-8-a\').1e(\'3-8-a-z\');$(\'.3-8-a:1u\').3b(\'3-8-a-z\')}3a{$(\'.3-a-k\').p(\'o-1g\',\'11\');$(\'.3-a-k\').p(\'o-1f\',\'11\');$(\'.3-8-a:1u\').1e(\'3-8-a-z\')}},"39");7.j("38",6(y){1d.37(\'1c\',y.9[y.36].1a)});c(1d.1t(\'1c\')){35("1s(1d.1t(\'1c\'));",34)}});h 18;6 1s(1q){h 9=7.1b();c(9.n>1){1r(i=0;i<9.n;i++){c(9[i].1a==1q){c(i==18){19}18=i;7.1p(i)}}}}',36,270,'|||jw|||function|player|settings|tracks|submenu||if||||jwplayer|var||on|audioTracks|true|3D|length|aria|attr|div|100|||sx|filemoon|https||event|active||false|tt|seek|dd|height|width|adb|current_audio|return|name|getAudioTracks|default_audio|localStorage|removeClass|expanded|checked|addButton|callMeMaybe|vplayer|0fxcyc2ajhp1|position|vvplay|vvad|220|setCurrentAudioTrack|audio_name|for|audio_set|getItem|last|open|controls|playbackRates|captions|rewind|icon|insertAfter||detach|ff00||button|getPosition|sec|png|player8|ff11|log|console|track_name|appendTo|play|click|no|scrolling|frameborder|file_code|src|top|zIndex|css|showCCform|data|1662367683|383371|dl|video_ad|doPlay|prevt|mp4|3E||jpg|thumbs|file|300|setTimeout|currentTrack|setItem|audioTrackChanged|dualSound|else|addClass|hasClass|toggleClass|Track|Audio|svg|dualy|images|mousedown|buttons|topbar|playAttemptFailed|beforePlay|Rewind|fr|Forward|ff|ready|set_audio_track|remove|this|upload_srt|prop|50px|margin|1000001|iframe|center|align|text|rgba|background|1000000|left|absolute|pause|setCurrentCaptions|Upload|contains|item|content|html|fviews|referer|prem|embed|3e57249ef633e0d03bf76ceb8d8a4b65|216|83|hash|view|get|TokenZir|window|hide|show|complete|slow|fadeIn|video_ad_fadein|time||cache|Cache|Content|headers|ajaxSetup|v2done|tott|vastdone2|vastdone1|vvbefore|playbackRateControls|cast|aboutlink|FileMoon|abouttext|UHD|1870|qualityLabels|sites|GNOME_POWER|link|2Fiframe|3C|allowfullscreen|22360|22640|22no|marginheight|marginwidth|2FGNOME_POWER|2F0fxcyc2ajhp1|2Fe|2Ffilemoon|2F|3A||22https|3Ciframe|code|sharing|fontOpacity|backgroundOpacity|Tahoma|fontFamily|303030|backgroundColor|FFFFFF|color|userFontScale|thumbnails|kind|0fxcyc2ajhp10000|url|get_slides|start|startparam|none|preload|html5|primary|hlshtml|androidhls|duration|uniform|stretching|0fxcyc2ajhp1_xt|image|2048|sp|6871|asn|127|srv|43200|_g3XlBcu2lmD9oDexD2NLWSmah2Nu3XcDrl93m9PwXY|m3u8||master|0fxcyc2ajhp1_x|00076|01|hls2|to|s01|delivery|storage|moon|sources|setup'''.split('|')))
+
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/test/test_utils.py b/test/test_utils.py
index e1bf6ac20..a22f25d73 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -5,6 +5,7 @@ import os
 import re
 import sys
 import unittest
+import warnings
 
 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
@@ -112,6 +113,7 @@ from yt_dlp.utils import (
     subtitles_filename,
     timeconvert,
     traverse_obj,
+    try_call,
     unescapeHTML,
     unified_strdate,
     unified_timestamp,
@@ -123,6 +125,7 @@ from yt_dlp.utils import (
     urlencode_postdata,
     urljoin,
     urshift,
+    variadic,
     version_tuple,
     xpath_attr,
     xpath_element,
@@ -1974,6 +1977,35 @@ Line 1
         self.assertEqual(get_compatible_ext(
             vcodecs=['av1'], acodecs=['mp4a'], vexts=['webm'], aexts=['m4a'], preferences=('webm', 'mkv')), 'mkv')
 
+    def test_try_call(self):
+        def total(*x, **kwargs):
+            return sum(x) + sum(kwargs.values())
+
+        self.assertEqual(try_call(None), None,
+                         msg='not a fn should give None')
+        self.assertEqual(try_call(lambda: 1), 1,
+                         msg='int fn with no expected_type should give int')
+        self.assertEqual(try_call(lambda: 1, expected_type=int), 1,
+                         msg='int fn with expected_type int should give int')
+        self.assertEqual(try_call(lambda: 1, expected_type=dict), None,
+                         msg='int fn with wrong expected_type should give None')
+        self.assertEqual(try_call(total, args=(0, 1, 0, ), expected_type=int), 1,
+                         msg='fn should accept arglist')
+        self.assertEqual(try_call(total, kwargs={'a': 0, 'b': 1, 'c': 0}, expected_type=int), 1,
+                         msg='fn should accept kwargs')
+        self.assertEqual(try_call(lambda: 1, expected_type=dict), None,
+                         msg='int fn with no expected_type should give None')
+        self.assertEqual(try_call(lambda x: {}, total, args=(42, ), expected_type=int), 42,
+                         msg='expect first int result with expected_type int')
+
+    def test_variadic(self):
+        self.assertEqual(variadic(None), (None, ))
+        self.assertEqual(variadic('spam'), ('spam', ))
+        self.assertEqual(variadic('spam', allowed_types=dict), 'spam')
+        with warnings.catch_warnings():
+            warnings.simplefilter('ignore')
+            self.assertEqual(variadic('spam', allowed_types=[dict]), 'spam')
+
     def test_traverse_obj(self):
         _TEST_DATA = {
             100: 100,
diff --git a/yt_dlp/downloader/common.py b/yt_dlp/downloader/common.py
index 8f9bc05d6..c48a2ff8a 100644
--- a/yt_dlp/downloader/common.py
+++ b/yt_dlp/downloader/common.py
@@ -139,17 +139,21 @@ class FileDownloader:
     def format_percent(percent):
         return '  N/A%' if percent is None else f'{percent:>5.1f}%'
 
-    @staticmethod
-    def calc_eta(start, now, total, current):
+    @classmethod
+    def calc_eta(cls, start_or_rate, now_or_remaining, total=NO_DEFAULT, current=NO_DEFAULT):
+        if total is NO_DEFAULT:
+            rate, remaining = start_or_rate, now_or_remaining
+            if None in (rate, remaining):
+                return None
+            return int(float(remaining) / rate)
+
+        start, now = start_or_rate, now_or_remaining
         if total is None:
             return None
         if now is None:
             now = time.time()
-        dif = now - start
-        if current == 0 or dif < 0.001:  # One millisecond
-            return None
-        rate = float(current) / dif
-        return int((float(total) - float(current)) / rate)
+        rate = cls.calc_speed(start, now, current)
+        return rate and int((float(total) - float(current)) / rate)
 
     @staticmethod
     def calc_speed(start, now, bytes):
@@ -166,6 +170,12 @@ class FileDownloader:
     def format_retries(retries):
         return 'inf' if retries == float('inf') else int(retries)
 
+    @staticmethod
+    def filesize_or_none(unencoded_filename):
+        if os.path.isfile(unencoded_filename):
+            return os.path.getsize(unencoded_filename)
+        return 0
+
     @staticmethod
     def best_block_size(elapsed_time, bytes):
         new_min = max(bytes / 2.0, 1.0)
diff --git a/yt_dlp/downloader/fragment.py b/yt_dlp/downloader/fragment.py
index 8abf7760b..6770815ab 100644
--- a/yt_dlp/downloader/fragment.py
+++ b/yt_dlp/downloader/fragment.py
@@ -121,6 +121,11 @@ class FragmentFD(FileDownloader):
             'request_data': request_data,
             'ctx_id': ctx.get('ctx_id'),
         }
+        frag_resume_len = 0
+        if ctx['dl'].params.get('continuedl', True):
+            frag_resume_len = self.filesize_or_none(self.temp_name(fragment_filename))
+        fragment_info_dict['frag_resume_len'] = ctx['frag_resume_len'] = frag_resume_len
+
         success, _ = ctx['dl'].download(fragment_filename, fragment_info_dict)
         if not success:
             return False
@@ -155,9 +160,7 @@ class FragmentFD(FileDownloader):
             del ctx['fragment_filename_sanitized']
 
     def _prepare_frag_download(self, ctx):
-        if 'live' not in ctx:
-            ctx['live'] = False
-        if not ctx['live']:
+        if not ctx.setdefault('live', False):
             total_frags_str = '%d' % ctx['total_frags']
             ad_frags = ctx.get('ad_frags', 0)
             if ad_frags:
@@ -173,12 +176,11 @@ class FragmentFD(FileDownloader):
         })
         tmpfilename = self.temp_name(ctx['filename'])
         open_mode = 'wb'
-        resume_len = 0
 
         # Establish possible resume length
-        if os.path.isfile(encodeFilename(tmpfilename)):
+        resume_len = self.filesize_or_none(tmpfilename)
+        if resume_len > 0:
             open_mode = 'ab'
-            resume_len = os.path.getsize(encodeFilename(tmpfilename))
 
         # Should be initialized before ytdl file check
         ctx.update({
@@ -187,7 +189,9 @@ class FragmentFD(FileDownloader):
         })
 
         if self.__do_ytdl_file(ctx):
-            if os.path.isfile(encodeFilename(self.ytdl_filename(ctx['filename']))):
+            ytdl_file_exists = os.path.isfile(encodeFilename(self.ytdl_filename(ctx['filename'])))
+            continuedl = self.params.get('continuedl', True)
+            if continuedl and ytdl_file_exists:
                 self._read_ytdl_file(ctx)
                 is_corrupt = ctx.get('ytdl_corrupt') is True
                 is_inconsistent = ctx['fragment_index'] > 0 and resume_len == 0
@@ -201,7 +205,12 @@ class FragmentFD(FileDownloader):
                     if 'ytdl_corrupt' in ctx:
                         del ctx['ytdl_corrupt']
                     self._write_ytdl_file(ctx)
+
             else:
+                if not continuedl:
+                    if ytdl_file_exists:
+                        self._read_ytdl_file(ctx)
+                    ctx['fragment_index'] = resume_len = 0
                 self._write_ytdl_file(ctx)
                 assert ctx['fragment_index'] == 0
 
@@ -274,12 +283,10 @@ class FragmentFD(FileDownloader):
             else:
                 frag_downloaded_bytes = s['downloaded_bytes']
                 state['downloaded_bytes'] += frag_downloaded_bytes - ctx['prev_frag_downloaded_bytes']
-                if not ctx['live']:
-                    state['eta'] = self.calc_eta(
-                        start, time_now, estimated_size - resume_len,
-                        state['downloaded_bytes'] - resume_len)
                 ctx['speed'] = state['speed'] = self.calc_speed(
-                    ctx['fragment_started'], time_now, frag_downloaded_bytes)
+                    ctx['fragment_started'], time_now, frag_downloaded_bytes - ctx['frag_resume_len'])
+                if not ctx['live']:
+                    state['eta'] = self.calc_eta(state['speed'], estimated_size - state['downloaded_bytes'])
                 ctx['prev_frag_downloaded_bytes'] = frag_downloaded_bytes
             self._hook_progress(state, info_dict)
 
@@ -297,7 +304,7 @@ class FragmentFD(FileDownloader):
 
         to_file = ctx['tmpfilename'] != '-'
         if to_file:
-            downloaded_bytes = os.path.getsize(encodeFilename(ctx['tmpfilename']))
+            downloaded_bytes = self.filesize_or_none(ctx['filename'])
         else:
             downloaded_bytes = ctx['complete_frags_downloaded_bytes']
 
diff --git a/yt_dlp/downloader/http.py b/yt_dlp/downloader/http.py
index 79f69b5d0..e785f0d4e 100644
--- a/yt_dlp/downloader/http.py
+++ b/yt_dlp/downloader/http.py
@@ -150,7 +150,8 @@ class HttpFD(FileDownloader):
                     # Content-Range is either not present or invalid. Assuming remote webserver is
                     # trying to send the whole file, resume is not possible, so wiping the local file
                     # and performing entire redownload
-                    self.report_unable_to_resume()
+                    elif range_start > 0:
+                        self.report_unable_to_resume()
                     ctx.resume_len = 0
                     ctx.open_mode = 'wb'
                 ctx.data_len = ctx.content_len = int_or_none(ctx.data.info().get('Content-length', None))
diff --git a/yt_dlp/extractor/aenetworks.py b/yt_dlp/extractor/aenetworks.py
index d7c401016..f049a0fb3 100644
--- a/yt_dlp/extractor/aenetworks.py
+++ b/yt_dlp/extractor/aenetworks.py
@@ -3,6 +3,8 @@ from ..utils import (
     ExtractorError,
     GeoRestrictedError,
     int_or_none,
+    remove_start,
+    traverse_obj,
     update_url_query,
     urlencode_postdata,
 )
@@ -72,7 +74,14 @@ class AENetworksBaseIE(ThePlatformIE):  # XXX: Do not subclass from concrete IE
         requestor_id, brand = self._DOMAIN_MAP[domain]
         result = self._download_json(
             'https://feeds.video.aetnd.com/api/v2/%s/videos' % brand,
-            filter_value, query={'filter[%s]' % filter_key: filter_value})['results'][0]
+            filter_value, query={'filter[%s]' % filter_key: filter_value})
+        result = traverse_obj(
+            result, ('results',
+                     lambda k, v: k == 0 and v[filter_key] == filter_value),
+            get_all=False)
+        if not result:
+            raise ExtractorError('Show not found in A&E feed (too new?)', expected=True,
+                                 video_id=remove_start(filter_value, '/'))
         title = result['title']
         video_id = result['id']
         media_url = result['publicUrl']
@@ -123,7 +132,7 @@ class AENetworksIE(AENetworksBaseIE):
             'skip_download': True,
         },
         'add_ie': ['ThePlatform'],
-        'skip': 'This video is only available for users of participating TV providers.',
+        'skip': 'Geo-restricted - This content is not available in your location.'
     }, {
         'url': 'http://www.aetv.com/shows/duck-dynasty/season-9/episode-1',
         'info_dict': {
@@ -140,6 +149,7 @@ class AENetworksIE(AENetworksBaseIE):
             'skip_download': True,
         },
         'add_ie': ['ThePlatform'],
+        'skip': 'This video is only available for users of participating TV providers.',
     }, {
         'url': 'http://www.fyi.tv/shows/tiny-house-nation/season-1/episode-8',
         'only_matching': True
@@ -303,6 +313,7 @@ class HistoryTopicIE(AENetworksBaseIE):
 class HistoryPlayerIE(AENetworksBaseIE):
     IE_NAME = 'history:player'
     _VALID_URL = r'https?://(?:www\.)?(?P<domain>(?:history|biography)\.com)/player/(?P<id>\d+)'
+    _TESTS = []
 
     def _real_extract(self, url):
         domain, video_id = self._match_valid_url(url).groups()
diff --git a/yt_dlp/extractor/litv.py b/yt_dlp/extractor/litv.py
index 0b792fb96..19b298ec6 100644
--- a/yt_dlp/extractor/litv.py
+++ b/yt_dlp/extractor/litv.py
@@ -4,8 +4,8 @@ from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
     int_or_none,
-    traverse_obj,
     smuggle_url,
+    traverse_obj,
     unsmuggle_url,
 )
 
diff --git a/yt_dlp/extractor/youtube.py b/yt_dlp/extractor/youtube.py
index bd38900f2..654bf5e6b 100644
--- a/yt_dlp/extractor/youtube.py
+++ b/yt_dlp/extractor/youtube.py
@@ -66,7 +66,6 @@ from ..utils import (
     variadic,
 )
 
-
 STREAMING_DATA_CLIENT_NAME = '__yt_dlp_client'
 # any clients starting with _ cannot be explicitly requested by the user
 INNERTUBE_CLIENTS = {
@@ -2994,17 +2993,14 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
              r'\b[a-zA-Z0-9]+\s*&&\s*[a-zA-Z0-9]+\.set\([^,]+\s*,\s*encodeURIComponent\s*\(\s*(?P<sig>[a-zA-Z0-9$]+)\(',
              r'\bm=(?P<sig>[a-zA-Z0-9$]{2,})\(decodeURIComponent\(h\.s\)\)',
              r'\bc&&\(c=(?P<sig>[a-zA-Z0-9$]{2,})\(decodeURIComponent\(c\)\)',
-             r'(?:\b|[^a-zA-Z0-9$])(?P<sig>[a-zA-Z0-9$]{2,})\s*=\s*function\(\s*a\s*\)\s*{\s*a\s*=\s*a\.split\(\s*""\s*\);[a-zA-Z0-9$]{2}\.[a-zA-Z0-9$]{2}\(a,\d+\)',
-             r'(?:\b|[^a-zA-Z0-9$])(?P<sig>[a-zA-Z0-9$]{2,})\s*=\s*function\(\s*a\s*\)\s*{\s*a\s*=\s*a\.split\(\s*""\s*\)',
+             r'(?:\b|[^a-zA-Z0-9$])(?P<sig>[a-zA-Z0-9$]{2,})\s*=\s*function\(\s*a\s*\)\s*{\s*a\s*=\s*a\.split\(\s*""\s*\)(?:;[a-zA-Z0-9$]{2}\.[a-zA-Z0-9$]{2}\(a,\d+\))?',
              r'(?P<sig>[a-zA-Z0-9$]+)\s*=\s*function\(\s*a\s*\)\s*{\s*a\s*=\s*a\.split\(\s*""\s*\)',
              # Obsolete patterns
-             r'(["\'])signature\1\s*,\s*(?P<sig>[a-zA-Z0-9$]+)\(',
+             r'("|\')signature\1\s*,\s*(?P<sig>[a-zA-Z0-9$]+)\(',
              r'\.sig\|\|(?P<sig>[a-zA-Z0-9$]+)\(',
              r'yt\.akamaized\.net/\)\s*\|\|\s*.*?\s*[cs]\s*&&\s*[adf]\.set\([^,]+\s*,\s*(?:encodeURIComponent\s*\()?\s*(?P<sig>[a-zA-Z0-9$]+)\(',
              r'\b[cs]\s*&&\s*[adf]\.set\([^,]+\s*,\s*(?P<sig>[a-zA-Z0-9$]+)\(',
              r'\b[a-zA-Z0-9]+\s*&&\s*[a-zA-Z0-9]+\.set\([^,]+\s*,\s*(?P<sig>[a-zA-Z0-9$]+)\(',
-             r'\bc\s*&&\s*a\.set\([^,]+\s*,\s*\([^)]*\)\s*\(\s*(?P<sig>[a-zA-Z0-9$]+)\(',
-             r'\bc\s*&&\s*[a-zA-Z0-9]+\.set\([^,]+\s*,\s*\([^)]*\)\s*\(\s*(?P<sig>[a-zA-Z0-9$]+)\(',
              r'\bc\s*&&\s*[a-zA-Z0-9]+\.set\([^,]+\s*,\s*\([^)]*\)\s*\(\s*(?P<sig>[a-zA-Z0-9$]+)\('),
             jscode, 'Initial JS player signature function name', group='sig')
 
@@ -4883,7 +4879,7 @@ class YoutubeTabBaseInfoExtractor(YoutubeBaseInfoExtractor):
         metadata_renderer = traverse_obj(data, ('metadata', 'channelMetadataRenderer'), expected_type=dict)
         if metadata_renderer:
             channel_id = traverse_obj(metadata_renderer, ('externalId', {self.ucid_or_none}),
-                                                         ('channelUrl', {self.ucid_from_url}))
+                                      ('channelUrl', {self.ucid_from_url}))
             info.update({
                 'channel': metadata_renderer.get('title'),
                 'channel_id': channel_id,
diff --git a/yt_dlp/jsinterp.py b/yt_dlp/jsinterp.py
index 82974fb27..1ef1f0823 100644
--- a/yt_dlp/jsinterp.py
+++ b/yt_dlp/jsinterp.py
@@ -443,7 +443,7 @@ class JSInterpreter:
                 err = e
 
             pending = (None, False)
-            m = re.match(r'catch\s*(?P<err>\(\s*{_NAME_RE}\s*\))?\{{'.format(**globals()), expr)
+            m = re.match(fr'catch\s*(?P<err>\(\s*{_NAME_RE}\s*\))?\{{', expr)
             if m:
                 sub_expr, expr = self._separate_at_paren(expr[m.end() - 1:])
                 if err:
diff --git a/yt_dlp/utils/_utils.py b/yt_dlp/utils/_utils.py
index afcb2a164..238b0fe69 100644
--- a/yt_dlp/utils/_utils.py
+++ b/yt_dlp/utils/_utils.py
@@ -130,8 +130,13 @@ USER_AGENTS = {
 }
 
 
-NO_DEFAULT = object()
-IDENTITY = lambda x: x
+class NO_DEFAULT:
+    pass
+
+
+def IDENTITY(x):
+    return x
+
 
 ENGLISH_MONTH_NAMES = [
     'January', 'February', 'March', 'April', 'May', 'June',
@@ -3223,6 +3228,9 @@ def is_iterable_like(x, allowed_types=collections.abc.Iterable, blocked_types=NO
 
 
 def variadic(x, allowed_types=NO_DEFAULT):
+    if not isinstance(allowed_types, (tuple, type)):
+        deprecation_warning('allowed_types should be a tuple or a type')
+        allowed_types = tuple(allowed_types)
     return x if is_iterable_like(x, blocked_types=allowed_types) else (x, )