Merge branch 'yt-dlp:master' into pr/live-sections

2025-12-13 19:55:25 +00:00 · 2025-05-04 12:43:50 -05:00
parent 64785adec3 0feec6dc13
commit 59dcadefdb
187 changed files with 12020 additions and 7917 deletions
--- a/test/helper.py
+++ b/test/helper.py
@@ -101,87 +101,109 @@ def getwebpagetestcases():
 md5 = lambda s: hashlib.md5(s.encode()).hexdigest()


-def expect_value(self, got, expected, field):
-    if isinstance(expected, str) and expected.startswith('re:'):
-        match_str = expected[len('re:'):]
-        match_rex = re.compile(match_str)
+def _iter_differences(got, expected, field):
+    if isinstance(expected, str):
+        op, _, val = expected.partition(':')
+        if op in ('mincount', 'maxcount', 'count'):
+            if not isinstance(got, (list, dict)):
+                yield field, f'expected either {list.__name__} or {dict.__name__}, got {type(got).__name__}'
+                return

-        self.assertTrue(
-            isinstance(got, str),
-            f'Expected a {str.__name__} object, but got {type(got).__name__} for field {field}')
-        self.assertTrue(
-            match_rex.match(got),
-            f'field {field} (value: {got!r}) should match {match_str!r}')
-    elif isinstance(expected, str) and expected.startswith('startswith:'):
-        start_str = expected[len('startswith:'):]
-        self.assertTrue(
-            isinstance(got, str),
-            f'Expected a {str.__name__} object, but got {type(got).__name__} for field {field}')
-        self.assertTrue(
-            got.startswith(start_str),
-            f'field {field} (value: {got!r}) should start with {start_str!r}')
-    elif isinstance(expected, str) and expected.startswith('contains:'):
-        contains_str = expected[len('contains:'):]
-        self.assertTrue(
-            isinstance(got, str),
-            f'Expected a {str.__name__} object, but got {type(got).__name__} for field {field}')
-        self.assertTrue(
-            contains_str in got,
-            f'field {field} (value: {got!r}) should contain {contains_str!r}')
-    elif isinstance(expected, type):
-        self.assertTrue(
-            isinstance(got, expected),
-            f'Expected type {expected!r} for field {field}, but got value {got!r} of type {type(got)!r}')
-    elif isinstance(expected, dict) and isinstance(got, dict):
-        expect_dict(self, got, expected)
-    elif isinstance(expected, list) and isinstance(got, list):
-        self.assertEqual(
-            len(expected), len(got),
-            f'Expect a list of length {len(expected)}, but got a list of length {len(got)} for field {field}')
-        for index, (item_got, item_expected) in enumerate(zip(got, expected)):
-            type_got = type(item_got)
-            type_expected = type(item_expected)
-            self.assertEqual(
-                type_expected, type_got,
-                f'Type mismatch for list item at index {index} for field {field}, '
-                f'expected {type_expected!r}, got {type_got!r}')
-            expect_value(self, item_got, item_expected, field)
-    else:
-        if isinstance(expected, str) and expected.startswith('md5:'):
-            self.assertTrue(
-                isinstance(got, str),
-                f'Expected field {field} to be a unicode object, but got value {got!r} of type {type(got)!r}')
-            got = 'md5:' + md5(got)
-        elif isinstance(expected, str) and re.match(r'^(?:min|max)?count:\d+', expected):
-            self.assertTrue(
-                isinstance(got, (list, dict)),
-                f'Expected field {field} to be a list or a dict, but it is of type {type(got).__name__}')
-            op, _, expected_num = expected.partition(':')
-            expected_num = int(expected_num)
+            expected_num = int(val)
+            got_num = len(got)
            if op == 'mincount':
-                assert_func = assertGreaterEqual
-                msg_tmpl = 'Expected %d items in field %s, but only got %d'
-            elif op == 'maxcount':
-                assert_func = assertLessEqual
-                msg_tmpl = 'Expected maximum %d items in field %s, but got %d'
-            elif op == 'count':
-                assert_func = assertEqual
-                msg_tmpl = 'Expected exactly %d items in field %s, but got %d'
-            else:
-                assert False
-            assert_func(
-                self, len(got), expected_num,
-                msg_tmpl % (expected_num, field, len(got)))
+                if got_num < expected_num:
+                    yield field, f'expected at least {val} items, got {got_num}'
+                return
+
+            if op == 'maxcount':
+                if got_num > expected_num:
+                    yield field, f'expected at most {val} items, got {got_num}'
+                return
+
+            assert op == 'count'
+            if got_num != expected_num:
+                yield field, f'expected exactly {val} items, got {got_num}'
            return
-        self.assertEqual(
-            expected, got,
-            f'Invalid value for field {field}, expected {expected!r}, got {got!r}')
+
+        if not isinstance(got, str):
+            yield field, f'expected {str.__name__}, got {type(got).__name__}'
+            return
+
+        if op == 're':
+            if not re.match(val, got):
+                yield field, f'should match {val!r}, got {got!r}'
+            return
+
+        if op == 'startswith':
+            if not got.startswith(val):
+                yield field, f'should start with {val!r}, got {got!r}'
+            return
+
+        if op == 'contains':
+            if not val.startswith(got):
+                yield field, f'should contain {val!r}, got {got!r}'
+            return
+
+        if op == 'md5':
+            hash_val = md5(got)
+            if hash_val != val:
+                yield field, f'expected hash {val}, got {hash_val}'
+            return
+
+        if got != expected:
+            yield field, f'expected {expected!r}, got {got!r}'
+        return
+
+    if isinstance(expected, dict) and isinstance(got, dict):
+        for key, expected_val in expected.items():
+            if key not in got:
+                yield field, f'missing key: {key!r}'
+                continue
+
+            field_name = key if field is None else f'{field}.{key}'
+            yield from _iter_differences(got[key], expected_val, field_name)
+        return
+
+    if isinstance(expected, type):
+        if not isinstance(got, expected):
+            yield field, f'expected {expected.__name__}, got {type(got).__name__}'
+        return
+
+    if isinstance(expected, list) and isinstance(got, list):
+        # TODO: clever diffing algorithm lmao
+        if len(expected) != len(got):
+            yield field, f'expected length of {len(expected)}, got {len(got)}'
+            return
+
+        for index, (got_val, expected_val) in enumerate(zip(got, expected)):
+            field_name = str(index) if field is None else f'{field}.{index}'
+            yield from _iter_differences(got_val, expected_val, field_name)
+        return
+
+    if got != expected:
+        yield field, f'expected {expected!r}, got {got!r}'
+
+
+def _expect_value(message, got, expected, field):
+    mismatches = list(_iter_differences(got, expected, field))
+    if not mismatches:
+        return
+
+    fields = [field for field, _ in mismatches if field is not None]
+    return ''.join((
+        message, f' ({", ".join(fields)})' if fields else '',
+        *(f'\n\t{field}: {message}' for field, message in mismatches)))
+
+
+def expect_value(self, got, expected, field):
+    if message := _expect_value('values differ', got, expected, field):
+        self.fail(message)


 def expect_dict(self, got_dict, expected_dict):
-    for info_field, expected in expected_dict.items():
-        got = got_dict.get(info_field)
-        expect_value(self, got, expected, info_field)
+    if message := _expect_value('dictionaries differ', got_dict, expected_dict, None):
+        self.fail(message)


 def sanitize_got_info_dict(got_dict):
@@ -237,6 +259,20 @@ def sanitize_got_info_dict(got_dict):


 def expect_info_dict(self, got_dict, expected_dict):
+    ALLOWED_KEYS_SORT_ORDER = (
+        # NB: Keep in sync with the docstring of extractor/common.py
+        'id', 'ext', 'direct', 'display_id', 'title', 'alt_title', 'description', 'media_type',
+        'uploader', 'uploader_id', 'uploader_url', 'channel', 'channel_id', 'channel_url', 'channel_is_verified',
+        'channel_follower_count', 'comment_count', 'view_count', 'concurrent_view_count',
+        'like_count', 'dislike_count', 'repost_count', 'average_rating', 'age_limit', 'duration', 'thumbnail', 'heatmap',
+        'chapters', 'chapter', 'chapter_number', 'chapter_id', 'start_time', 'end_time', 'section_start', 'section_end',
+        'categories', 'tags', 'cast', 'composers', 'artists', 'album_artists', 'creators', 'genres',
+        'track', 'track_number', 'track_id', 'album', 'album_type', 'disc_number',
+        'series', 'series_id', 'season', 'season_number', 'season_id', 'episode', 'episode_number', 'episode_id',
+        'timestamp', 'upload_date', 'release_timestamp', 'release_date', 'release_year', 'modified_timestamp', 'modified_date',
+        'playable_in_embed', 'availability', 'live_status', 'location', 'license', '_old_archive_ids',
+    )
+
    expect_dict(self, got_dict, expected_dict)
    # Check for the presence of mandatory fields
    if got_dict.get('_type') not in ('playlist', 'multi_video'):
@@ -252,7 +288,13 @@ def expect_info_dict(self, got_dict, expected_dict):

    test_info_dict = sanitize_got_info_dict(got_dict)

-    missing_keys = set(test_info_dict.keys()) - set(expected_dict.keys())
+    # Check for invalid/misspelled field names being returned by the extractor
+    invalid_keys = sorted(test_info_dict.keys() - ALLOWED_KEYS_SORT_ORDER)
+    self.assertFalse(invalid_keys, f'Invalid fields returned by the extractor: {", ".join(invalid_keys)}')
+
+    missing_keys = sorted(
+        test_info_dict.keys() - expected_dict.keys(),
+        key=lambda x: ALLOWED_KEYS_SORT_ORDER.index(x))
    if missing_keys:
        def _repr(v):
            if isinstance(v, str):
--- a/test/test_InfoExtractor.py
+++ b/test/test_InfoExtractor.py
@@ -638,6 +638,7 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                'img_bipbop_adv_example_fmp4',
                'https://devstreaming-cdn.apple.com/videos/streaming/examples/img_bipbop_adv_example_fmp4/master.m3u8',
                [{
+                    # 60kbps (bitrate not provided in m3u8); sorted as worst because it's grouped with lowest bitrate video track
                    'format_id': 'aud1-English',
                    'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/img_bipbop_adv_example_fmp4/a1/prog_index.m3u8',
                    'manifest_url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/img_bipbop_adv_example_fmp4/master.m3u8',
@@ -645,15 +646,9 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                    'ext': 'mp4',
                    'protocol': 'm3u8_native',
                    'audio_ext': 'mp4',
+                    'source_preference': 0,
                }, {
-                    'format_id': 'aud2-English',
-                    'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/img_bipbop_adv_example_fmp4/a2/prog_index.m3u8',
-                    'manifest_url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/img_bipbop_adv_example_fmp4/master.m3u8',
-                    'language': 'en',
-                    'ext': 'mp4',
-                    'protocol': 'm3u8_native',
-                    'audio_ext': 'mp4',
-                }, {
+                    # 192kbps (bitrate not provided in m3u8)
                    'format_id': 'aud3-English',
                    'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/img_bipbop_adv_example_fmp4/a3/prog_index.m3u8',
                    'manifest_url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/img_bipbop_adv_example_fmp4/master.m3u8',
@@ -661,6 +656,17 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
                    'ext': 'mp4',
                    'protocol': 'm3u8_native',
                    'audio_ext': 'mp4',
+                    'source_preference': 1,
+                }, {
+                    # 384kbps (bitrate not provided in m3u8); sorted as best because it's grouped with the highest bitrate video track
+                    'format_id': 'aud2-English',
+                    'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/img_bipbop_adv_example_fmp4/a2/prog_index.m3u8',
+                    'manifest_url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/img_bipbop_adv_example_fmp4/master.m3u8',
+                    'language': 'en',
+                    'ext': 'mp4',
+                    'protocol': 'm3u8_native',
+                    'audio_ext': 'mp4',
+                    'source_preference': 2,
                }, {
                    'format_id': '530',
                    'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/img_bipbop_adv_example_fmp4/v2/prog_index.m3u8',
--- a/test/test_YoutubeDL.py
+++ b/test/test_YoutubeDL.py
@@ -6,6 +6,8 @@ import sys
 import unittest
 from unittest.mock import patch

+from yt_dlp.globals import all_plugins_loaded
+
 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))


@@ -1427,6 +1429,12 @@ class TestYoutubeDL(unittest.TestCase):
        self.assertFalse(result.get('cookies'), msg='Cookies set in cookies field for wrong domain')
        self.assertFalse(ydl.cookiejar.get_cookie_header(fmt['url']), msg='Cookies set in cookiejar for wrong domain')

+    def test_load_plugins_compat(self):
+        # Should try to reload plugins if they haven't already been loaded
+        all_plugins_loaded.value = False
+        FakeYDL().close()
+        assert all_plugins_loaded.value
+

 if __name__ == '__main__':
    unittest.main()
--- a/test/test_http_proxy.py
+++ b/test/test_http_proxy.py
@@ -331,10 +331,6 @@ class TestHTTPConnectProxy:
                assert proxy_info['proxy'] == server_address
                assert 'Proxy-Authorization' in proxy_info['headers']

-    @pytest.mark.skip_handler(
-        'Requests',
-        'bug in urllib3 causes unclosed socket: https://github.com/urllib3/urllib3/issues/3374',
-    )
    def test_http_connect_bad_auth(self, handler, ctx):
        with ctx.http_server(HTTPConnectProxyHandler, username='test', password='test') as server_address:
            with handler(verify=False, proxies={ctx.REQUEST_PROTO: f'http://test:bad@{server_address}'}) as rh:
--- a/test/test_jsinterp.py
+++ b/test/test_jsinterp.py
@@ -9,7 +9,7 @@ sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

 import math

-from yt_dlp.jsinterp import JS_Undefined, JSInterpreter
+from yt_dlp.jsinterp import JS_Undefined, JSInterpreter, js_number_to_string


 class NaN:
@@ -93,6 +93,16 @@ class TestJSInterpreter(unittest.TestCase):
        self._test('function f(){return 0 ?? 42;}', 0)
        self._test('function f(){return "life, the universe and everything" < 42;}', False)
        self._test('function f(){return 0  - 7 * - 6;}', 42)
+        self._test('function f(){return true << "5";}', 32)
+        self._test('function f(){return true << true;}', 2)
+        self._test('function f(){return "19" & "21.9";}', 17)
+        self._test('function f(){return "19" & false;}', 0)
+        self._test('function f(){return "11.0" >> "2.1";}', 2)
+        self._test('function f(){return 5 ^ 9;}', 12)
+        self._test('function f(){return 0.0 << NaN}', 0)
+        self._test('function f(){return null << undefined}', 0)
+        # TODO: Does not work due to number too large
+        # self._test('function f(){return 21 << 4294967297}', 42)

    def test_array_access(self):
        self._test('function f(){var x = [1,2,3]; x[0] = 4; x[0] = 5; x[2.0] = 7; return x;}', [5, 2, 7])
@@ -108,6 +118,7 @@ class TestJSInterpreter(unittest.TestCase):
        self._test('function f(){var x = 20; x = 30 + 1; return x;}', 31)
        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)
+        self._test('function f(){var x = 2; var y = ["a", "b"]; y[x%y["length"]]="z"; return y}', ['z', 'b'])

    @unittest.skip('Not implemented')
    def test_comments(self):
@@ -374,7 +385,7 @@ class TestJSInterpreter(unittest.TestCase):
    @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('|')))
+        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('|')))  # noqa: SIM905

    def test_join(self):
        test_input = list('test')
@@ -393,6 +404,8 @@ class TestJSInterpreter(unittest.TestCase):
        test_result = list('test')
        tests = [
            'function f(a, b){return a.split(b)}',
+            'function f(a, b){return a["split"](b)}',
+            'function f(a, b){let x = ["split"]; return a[x[0]](b)}',
            'function f(a, b){return String.prototype.split.call(a, b)}',
            'function f(a, b){return String.prototype.split.apply(a, [b])}',
        ]
@@ -431,6 +444,40 @@ class TestJSInterpreter(unittest.TestCase):
        self._test('function f(){return "012345678".slice(-1, 1)}', '')
        self._test('function f(){return "012345678".slice(-3, -1)}', '67')

+    def test_splice(self):
+        self._test('function f(){var T = ["0", "1", "2"]; T["splice"](2, 1, "0")[0]; return T }', ['0', '1', '0'])
+
+    def test_js_number_to_string(self):
+        for test, radix, expected in [
+            (0, None, '0'),
+            (-0, None, '0'),
+            (0.0, None, '0'),
+            (-0.0, None, '0'),
+            (math.nan, None, 'NaN'),
+            (-math.nan, None, 'NaN'),
+            (math.inf, None, 'Infinity'),
+            (-math.inf, None, '-Infinity'),
+            (10 ** 21.5, 8, '526665530627250154000000'),
+            (6, 2, '110'),
+            (254, 16, 'fe'),
+            (-10, 2, '-1010'),
+            (-0xff, 2, '-11111111'),
+            (0.1 + 0.2, 16, '0.4cccccccccccd'),
+            (1234.1234, 10, '1234.1234'),
+            # (1000000000000000128, 10, '1000000000000000100')
+        ]:
+            assert js_number_to_string(test, radix) == expected
+
+    def test_extract_function(self):
+        jsi = JSInterpreter('function a(b) { return b + 1; }')
+        func = jsi.extract_function('a')
+        self.assertEqual(func([2]), 3)
+
+    def test_extract_function_with_global_stack(self):
+        jsi = JSInterpreter('function c(d) { return d + e + f + g; }')
+        func = jsi.extract_function('c', {'e': 10}, {'f': 100, 'g': 1000})
+        self.assertEqual(func([1]), 1111)
+

 if __name__ == '__main__':
    unittest.main()
--- a/test/test_networking.py
+++ b/test/test_networking.py
@@ -39,6 +39,7 @@ from yt_dlp.cookies import YoutubeDLCookieJar
 from yt_dlp.dependencies import brotli, curl_cffi, requests, urllib3
 from yt_dlp.networking import (
    HEADRequest,
+    PATCHRequest,
    PUTRequest,
    Request,
    RequestDirector,
@@ -614,7 +615,6 @@ class TestHTTPRequestHandler(TestRequestHandlerBase):
                rh, Request(f'http://127.0.0.1:{self.http_port}/source_address')).read().decode()
            assert source_address == data

-    # Not supported by CurlCFFI
    @pytest.mark.skip_handler('CurlCFFI', 'not supported by curl-cffi')
    def test_gzip_trailing_garbage(self, handler):
        with handler() as rh:
@@ -720,6 +720,15 @@ class TestHTTPRequestHandler(TestRequestHandlerBase):
                    rh, Request(
                        f'http://127.0.0.1:{self.http_port}/headers', proxies={'all': 'http://10.255.255.255'})).close()

+    @pytest.mark.skip_handlers_if(lambda _, handler: handler not in ['Urllib', 'CurlCFFI'], 'handler does not support keep_header_casing')
+    def test_keep_header_casing(self, handler):
+        with handler() as rh:
+            res = validate_and_send(
+                rh, Request(
+                    f'http://127.0.0.1:{self.http_port}/headers', headers={'X-test-heaDer': 'test'}, extensions={'keep_header_casing': True})).read().decode()
+
+            assert 'X-test-heaDer: test' in res
+

@pytest.mark.parametrize('handler', ['Urllib', 'Requests', 'CurlCFFI'], indirect=True)
 class TestClientCertificate:
@@ -1289,6 +1298,7 @@ class TestRequestHandlerValidation:
            ({'legacy_ssl': False}, False),
            ({'legacy_ssl': True}, False),
            ({'legacy_ssl': 'notabool'}, AssertionError),
+            ({'keep_header_casing': True}, UnsupportedRequest),
        ]),
        ('Requests', 'http', [
            ({'cookiejar': 'notacookiejar'}, AssertionError),
@@ -1299,6 +1309,9 @@ class TestRequestHandlerValidation:
            ({'legacy_ssl': False}, False),
            ({'legacy_ssl': True}, False),
            ({'legacy_ssl': 'notabool'}, AssertionError),
+            ({'keep_header_casing': False}, False),
+            ({'keep_header_casing': True}, False),
+            ({'keep_header_casing': 'notabool'}, AssertionError),
        ]),
        ('CurlCFFI', 'http', [
            ({'cookiejar': 'notacookiejar'}, AssertionError),
@@ -1844,6 +1857,7 @@ class TestRequest:

    def test_request_helpers(self):
        assert HEADRequest('http://example.com').method == 'HEAD'
+        assert PATCHRequest('http://example.com').method == 'PATCH'
        assert PUTRequest('http://example.com').method == 'PUT'

    def test_headers(self):
--- a/test/test_plugins.py
+++ b/test/test_plugins.py
@@ -10,22 +10,71 @@ TEST_DATA_DIR = Path(os.path.dirname(os.path.abspath(__file__)), 'testdata')
 sys.path.append(str(TEST_DATA_DIR))
 importlib.invalidate_caches()

-from yt_dlp.utils import Config
-from yt_dlp.plugins import PACKAGE_NAME, directories, load_plugins
+from yt_dlp.plugins import (
+    PACKAGE_NAME,
+    PluginSpec,
+    directories,
+    load_plugins,
+    load_all_plugins,
+    register_plugin_spec,
+)
+
+from yt_dlp.globals import (
+    extractors,
+    postprocessors,
+    plugin_dirs,
+    plugin_ies,
+    plugin_pps,
+    all_plugins_loaded,
+    plugin_specs,
+)
+
+
+EXTRACTOR_PLUGIN_SPEC = PluginSpec(
+    module_name='extractor',
+    suffix='IE',
+    destination=extractors,
+    plugin_destination=plugin_ies,
+)
+
+POSTPROCESSOR_PLUGIN_SPEC = PluginSpec(
+    module_name='postprocessor',
+    suffix='PP',
+    destination=postprocessors,
+    plugin_destination=plugin_pps,
+)
+
+
+def reset_plugins():
+    plugin_ies.value = {}
+    plugin_pps.value = {}
+    plugin_dirs.value = ['default']
+    plugin_specs.value = {}
+    all_plugins_loaded.value = False
+    # Clearing override plugins is probably difficult
+    for module_name in tuple(sys.modules):
+        for plugin_type in ('extractor', 'postprocessor'):
+            if module_name.startswith(f'{PACKAGE_NAME}.{plugin_type}.'):
+                del sys.modules[module_name]
+
+    importlib.invalidate_caches()


 class TestPlugins(unittest.TestCase):

    TEST_PLUGIN_DIR = TEST_DATA_DIR / PACKAGE_NAME

+    def setUp(self):
+        reset_plugins()
+
+    def tearDown(self):
+        reset_plugins()
+
    def test_directories_containing_plugins(self):
        self.assertIn(self.TEST_PLUGIN_DIR, map(Path, directories()))

    def test_extractor_classes(self):
-        for module_name in tuple(sys.modules):
-            if module_name.startswith(f'{PACKAGE_NAME}.extractor'):
-                del sys.modules[module_name]
-        plugins_ie = load_plugins('extractor', 'IE')
+        plugins_ie = load_plugins(EXTRACTOR_PLUGIN_SPEC)

        self.assertIn(f'{PACKAGE_NAME}.extractor.normal', sys.modules.keys())
        self.assertIn('NormalPluginIE', plugins_ie.keys())
@@ -35,17 +84,29 @@ class TestPlugins(unittest.TestCase):
            f'{PACKAGE_NAME}.extractor._ignore' in sys.modules,
            'loaded module beginning with underscore')
        self.assertNotIn('IgnorePluginIE', plugins_ie.keys())
+        self.assertNotIn('IgnorePluginIE', plugin_ies.value)

        # Don't load extractors with underscore prefix
        self.assertNotIn('_IgnoreUnderscorePluginIE', plugins_ie.keys())
+        self.assertNotIn('_IgnoreUnderscorePluginIE', plugin_ies.value)

        # Don't load extractors not specified in __all__ (if supplied)
        self.assertNotIn('IgnoreNotInAllPluginIE', plugins_ie.keys())
+        self.assertNotIn('IgnoreNotInAllPluginIE', plugin_ies.value)
        self.assertIn('InAllPluginIE', plugins_ie.keys())
+        self.assertIn('InAllPluginIE', plugin_ies.value)
+
+        # Don't load override extractors
+        self.assertNotIn('OverrideGenericIE', plugins_ie.keys())
+        self.assertNotIn('OverrideGenericIE', plugin_ies.value)
+        self.assertNotIn('_UnderscoreOverrideGenericIE', plugins_ie.keys())
+        self.assertNotIn('_UnderscoreOverrideGenericIE', plugin_ies.value)

    def test_postprocessor_classes(self):
-        plugins_pp = load_plugins('postprocessor', 'PP')
+        plugins_pp = load_plugins(POSTPROCESSOR_PLUGIN_SPEC)
        self.assertIn('NormalPluginPP', plugins_pp.keys())
+        self.assertIn(f'{PACKAGE_NAME}.postprocessor.normal', sys.modules.keys())
+        self.assertIn('NormalPluginPP', plugin_pps.value)

    def test_importing_zipped_module(self):
        zip_path = TEST_DATA_DIR / 'zipped_plugins.zip'
@@ -58,10 +119,10 @@ class TestPlugins(unittest.TestCase):
                package = importlib.import_module(f'{PACKAGE_NAME}.{plugin_type}')
                self.assertIn(zip_path / PACKAGE_NAME / plugin_type, map(Path, package.__path__))

-            plugins_ie = load_plugins('extractor', 'IE')
+            plugins_ie = load_plugins(EXTRACTOR_PLUGIN_SPEC)
            self.assertIn('ZippedPluginIE', plugins_ie.keys())

-            plugins_pp = load_plugins('postprocessor', 'PP')
+            plugins_pp = load_plugins(POSTPROCESSOR_PLUGIN_SPEC)
            self.assertIn('ZippedPluginPP', plugins_pp.keys())

        finally:
@@ -69,23 +130,116 @@ class TestPlugins(unittest.TestCase):
            os.remove(zip_path)
            importlib.invalidate_caches()  # reset the import caches

-    def test_plugin_dirs(self):
-        # Internal plugin dirs hack for CLI --plugin-dirs
-        # To be replaced with proper system later
-        custom_plugin_dir = TEST_DATA_DIR / 'plugin_packages'
-        Config._plugin_dirs = [str(custom_plugin_dir)]
-        importlib.invalidate_caches()  # reset the import caches
+    def test_reloading_plugins(self):
+        reload_plugins_path = TEST_DATA_DIR / 'reload_plugins'
+        load_plugins(EXTRACTOR_PLUGIN_SPEC)
+        load_plugins(POSTPROCESSOR_PLUGIN_SPEC)

+        # Remove default folder and add reload_plugin path
+        sys.path.remove(str(TEST_DATA_DIR))
+        sys.path.append(str(reload_plugins_path))
+        importlib.invalidate_caches()
        try:
-            package = importlib.import_module(f'{PACKAGE_NAME}.extractor')
-            self.assertIn(custom_plugin_dir / 'testpackage' / PACKAGE_NAME / 'extractor', map(Path, package.__path__))
+            for plugin_type in ('extractor', 'postprocessor'):
+                package = importlib.import_module(f'{PACKAGE_NAME}.{plugin_type}')
+                self.assertIn(reload_plugins_path / PACKAGE_NAME / plugin_type, map(Path, package.__path__))

-            plugins_ie = load_plugins('extractor', 'IE')
-            self.assertIn('PackagePluginIE', plugins_ie.keys())
+            plugins_ie = load_plugins(EXTRACTOR_PLUGIN_SPEC)
+            self.assertIn('NormalPluginIE', plugins_ie.keys())
+            self.assertTrue(
+                plugins_ie['NormalPluginIE'].REPLACED,
+                msg='Reloading has not replaced original extractor plugin')
+            self.assertTrue(
+                extractors.value['NormalPluginIE'].REPLACED,
+                msg='Reloading has not replaced original extractor plugin globally')
+
+            plugins_pp = load_plugins(POSTPROCESSOR_PLUGIN_SPEC)
+            self.assertIn('NormalPluginPP', plugins_pp.keys())
+            self.assertTrue(plugins_pp['NormalPluginPP'].REPLACED,
+                            msg='Reloading has not replaced original postprocessor plugin')
+            self.assertTrue(
+                postprocessors.value['NormalPluginPP'].REPLACED,
+                msg='Reloading has not replaced original postprocessor plugin globally')

        finally:
-            Config._plugin_dirs = []
-            importlib.invalidate_caches()  # reset the import caches
+            sys.path.remove(str(reload_plugins_path))
+            sys.path.append(str(TEST_DATA_DIR))
+            importlib.invalidate_caches()
+
+    def test_extractor_override_plugin(self):
+        load_plugins(EXTRACTOR_PLUGIN_SPEC)
+
+        from yt_dlp.extractor.generic import GenericIE
+
+        self.assertEqual(GenericIE.TEST_FIELD, 'override')
+        self.assertEqual(GenericIE.SECONDARY_TEST_FIELD, 'underscore-override')
+
+        self.assertEqual(GenericIE.IE_NAME, 'generic+override+underscore-override')
+        importlib.invalidate_caches()
+        #  test that loading a second time doesn't wrap a second time
+        load_plugins(EXTRACTOR_PLUGIN_SPEC)
+        from yt_dlp.extractor.generic import GenericIE
+        self.assertEqual(GenericIE.IE_NAME, 'generic+override+underscore-override')
+
+    def test_load_all_plugin_types(self):
+
+        # no plugin specs registered
+        load_all_plugins()
+
+        self.assertNotIn(f'{PACKAGE_NAME}.extractor.normal', sys.modules.keys())
+        self.assertNotIn(f'{PACKAGE_NAME}.postprocessor.normal', sys.modules.keys())
+
+        register_plugin_spec(EXTRACTOR_PLUGIN_SPEC)
+        register_plugin_spec(POSTPROCESSOR_PLUGIN_SPEC)
+        load_all_plugins()
+        self.assertTrue(all_plugins_loaded.value)
+
+        self.assertIn(f'{PACKAGE_NAME}.extractor.normal', sys.modules.keys())
+        self.assertIn(f'{PACKAGE_NAME}.postprocessor.normal', sys.modules.keys())
+
+    def test_no_plugin_dirs(self):
+        register_plugin_spec(EXTRACTOR_PLUGIN_SPEC)
+        register_plugin_spec(POSTPROCESSOR_PLUGIN_SPEC)
+
+        plugin_dirs.value = []
+        load_all_plugins()
+
+        self.assertNotIn(f'{PACKAGE_NAME}.extractor.normal', sys.modules.keys())
+        self.assertNotIn(f'{PACKAGE_NAME}.postprocessor.normal', sys.modules.keys())
+
+    def test_set_plugin_dirs(self):
+        custom_plugin_dir = str(TEST_DATA_DIR / 'plugin_packages')
+        plugin_dirs.value = [custom_plugin_dir]
+
+        load_plugins(EXTRACTOR_PLUGIN_SPEC)
+
+        self.assertIn(f'{PACKAGE_NAME}.extractor.package', sys.modules.keys())
+        self.assertIn('PackagePluginIE', plugin_ies.value)
+
+    def test_invalid_plugin_dir(self):
+        plugin_dirs.value = ['invalid_dir']
+        with self.assertRaises(ValueError):
+            load_plugins(EXTRACTOR_PLUGIN_SPEC)
+
+    def test_append_plugin_dirs(self):
+        custom_plugin_dir = str(TEST_DATA_DIR / 'plugin_packages')
+
+        self.assertEqual(plugin_dirs.value, ['default'])
+        plugin_dirs.value.append(custom_plugin_dir)
+        self.assertEqual(plugin_dirs.value, ['default', custom_plugin_dir])
+
+        load_plugins(EXTRACTOR_PLUGIN_SPEC)
+
+        self.assertIn(f'{PACKAGE_NAME}.extractor.package', sys.modules.keys())
+        self.assertIn('PackagePluginIE', plugin_ies.value)
+
+    def test_get_plugin_spec(self):
+        register_plugin_spec(EXTRACTOR_PLUGIN_SPEC)
+        register_plugin_spec(POSTPROCESSOR_PLUGIN_SPEC)
+
+        self.assertEqual(plugin_specs.value.get('extractor'), EXTRACTOR_PLUGIN_SPEC)
+        self.assertEqual(plugin_specs.value.get('postprocessor'), POSTPROCESSOR_PLUGIN_SPEC)
+        self.assertIsNone(plugin_specs.value.get('invalid'))


 if __name__ == '__main__':
--- a/test/test_subtitles.py
+++ b/test/test_subtitles.py
@@ -23,7 +23,6 @@ from yt_dlp.extractor import (
    TedTalkIE,
    ThePlatformFeedIE,
    ThePlatformIE,
-    VikiIE,
    VimeoIE,
    WallaIE,
    YoutubeIE,
@@ -331,20 +330,6 @@ class TestRaiPlaySubtitles(BaseTestSubtitles):
        self.assertEqual(md5(subtitles['it']), '4b3264186fbb103508abe5311cfcb9cd')


-@is_download_test
-@unittest.skip('IE broken - DRM only')
-class TestVikiSubtitles(BaseTestSubtitles):
-    url = 'http://www.viki.com/videos/1060846v-punch-episode-18'
-    IE = VikiIE
-
-    def test_allsubtitles(self):
-        self.DL.params['writesubtitles'] = True
-        self.DL.params['allsubtitles'] = True
-        subtitles = self.getSubtitles()
-        self.assertEqual(set(subtitles.keys()), {'en'})
-        self.assertEqual(md5(subtitles['en']), '53cb083a5914b2d84ef1ab67b880d18a')
-
-
@is_download_test
 class TestThePlatformSubtitles(BaseTestSubtitles):
    # from http://www.3playmedia.com/services-features/tools/integrations/theplatform/
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -3,19 +3,20 @@
 # Allow direct execution
 import os
 import sys
-import unittest
-import unittest.mock
-import warnings
-import datetime as dt

 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))


 import contextlib
+import datetime as dt
 import io
 import itertools
 import json
+import pickle
 import subprocess
+import unittest
+import unittest.mock
+import warnings
 import xml.etree.ElementTree

 from yt_dlp.compat import (
@@ -218,11 +219,8 @@ class TestUtil(unittest.TestCase):
        self.assertEqual(sanitize_filename('_BD_eEpuzXw', is_id=True), '_BD_eEpuzXw')
        self.assertEqual(sanitize_filename('N0Y__7-UOdI', is_id=True), 'N0Y__7-UOdI')

+    @unittest.mock.patch('sys.platform', 'win32')
    def test_sanitize_path(self):
-        with unittest.mock.patch('sys.platform', 'win32'):
-            self._test_sanitize_path()
-
-    def _test_sanitize_path(self):
        self.assertEqual(sanitize_path('abc'), 'abc')
        self.assertEqual(sanitize_path('abc/def'), 'abc\\def')
        self.assertEqual(sanitize_path('abc\\def'), 'abc\\def')
@@ -253,10 +251,8 @@ class TestUtil(unittest.TestCase):

        # Check with nt._path_normpath if available
        try:
-            import nt
-
-            nt_path_normpath = getattr(nt, '_path_normpath', None)
-        except Exception:
+            from nt import _path_normpath as nt_path_normpath
+        except ImportError:
            nt_path_normpath = None

        for test, expected in [
@@ -668,6 +664,8 @@ class TestUtil(unittest.TestCase):
        self.assertEqual(url_or_none('mms://foo.de'), 'mms://foo.de')
        self.assertEqual(url_or_none('rtspu://foo.de'), 'rtspu://foo.de')
        self.assertEqual(url_or_none('ftps://foo.de'), 'ftps://foo.de')
+        self.assertEqual(url_or_none('ws://foo.de'), 'ws://foo.de')
+        self.assertEqual(url_or_none('wss://foo.de'), 'wss://foo.de')

    def test_parse_age_limit(self):
        self.assertEqual(parse_age_limit(None), None)
@@ -1269,6 +1267,7 @@ class TestUtil(unittest.TestCase):
    def test_js_to_json_malformed(self):
        self.assertEqual(js_to_json('42a1'), '42"a1"')
        self.assertEqual(js_to_json('42a-1'), '42"a"-1')
+        self.assertEqual(js_to_json('{a: `${e("")}`}'), '{"a": "\\"e\\"(\\"\\")"}')

    def test_js_to_json_template_literal(self):
        self.assertEqual(js_to_json('`Hello ${name}`', {'name': '"world"'}), '"Hello world"')
@@ -2092,21 +2091,26 @@ Line 1
        headers = HTTPHeaderDict()
        headers['ytdl-test'] = b'0'
        self.assertEqual(list(headers.items()), [('Ytdl-Test', '0')])
+        self.assertEqual(list(headers.sensitive().items()), [('ytdl-test', '0')])
        headers['ytdl-test'] = 1
        self.assertEqual(list(headers.items()), [('Ytdl-Test', '1')])
+        self.assertEqual(list(headers.sensitive().items()), [('ytdl-test', '1')])
        headers['Ytdl-test'] = '2'
        self.assertEqual(list(headers.items()), [('Ytdl-Test', '2')])
+        self.assertEqual(list(headers.sensitive().items()), [('Ytdl-test', '2')])
        self.assertTrue('ytDl-Test' in headers)
        self.assertEqual(str(headers), str(dict(headers)))
        self.assertEqual(repr(headers), str(dict(headers)))

        headers.update({'X-dlp': 'data'})
        self.assertEqual(set(headers.items()), {('Ytdl-Test', '2'), ('X-Dlp', 'data')})
+        self.assertEqual(set(headers.sensitive().items()), {('Ytdl-test', '2'), ('X-dlp', 'data')})
        self.assertEqual(dict(headers), {'Ytdl-Test': '2', 'X-Dlp': 'data'})
        self.assertEqual(len(headers), 2)
        self.assertEqual(headers.copy(), headers)
-        headers2 = HTTPHeaderDict({'X-dlp': 'data3'}, **headers, **{'X-dlp': 'data2'})
+        headers2 = HTTPHeaderDict({'X-dlp': 'data3'}, headers, **{'X-dlP': 'data2'})
        self.assertEqual(set(headers2.items()), {('Ytdl-Test', '2'), ('X-Dlp', 'data2')})
+        self.assertEqual(set(headers2.sensitive().items()), {('Ytdl-test', '2'), ('X-dlP', 'data2')})
        self.assertEqual(len(headers2), 2)
        headers2.clear()
        self.assertEqual(len(headers2), 0)
@@ -2114,16 +2118,23 @@ Line 1
        # ensure we prefer latter headers
        headers3 = HTTPHeaderDict({'Ytdl-TeSt': 1}, {'Ytdl-test': 2})
        self.assertEqual(set(headers3.items()), {('Ytdl-Test', '2')})
+        self.assertEqual(set(headers3.sensitive().items()), {('Ytdl-test', '2')})
        del headers3['ytdl-tesT']
        self.assertEqual(dict(headers3), {})

        headers4 = HTTPHeaderDict({'ytdl-test': 'data;'})
        self.assertEqual(set(headers4.items()), {('Ytdl-Test', 'data;')})
+        self.assertEqual(set(headers4.sensitive().items()), {('ytdl-test', 'data;')})

        # common mistake: strip whitespace from values
        # https://github.com/yt-dlp/yt-dlp/issues/8729
        headers5 = HTTPHeaderDict({'ytdl-test': ' data; '})
        self.assertEqual(set(headers5.items()), {('Ytdl-Test', 'data;')})
+        self.assertEqual(set(headers5.sensitive().items()), {('ytdl-test', 'data;')})
+
+        # test if picklable
+        headers6 = HTTPHeaderDict(a=1, b=2)
+        self.assertEqual(pickle.loads(pickle.dumps(headers6)), headers6)

    def test_extract_basic_auth(self):
        assert extract_basic_auth('http://:foo.bar') == ('http://:foo.bar', None)
--- a/test/test_websockets.py
+++ b/test/test_websockets.py
@@ -44,7 +44,7 @@ def websocket_handler(websocket):
                return websocket.send('2')
        elif isinstance(message, str):
            if message == 'headers':
-                return websocket.send(json.dumps(dict(websocket.request.headers)))
+                return websocket.send(json.dumps(dict(websocket.request.headers.raw_items())))
            elif message == 'path':
                return websocket.send(websocket.request.path)
            elif message == 'source_address':
@@ -266,18 +266,18 @@ class TestWebsSocketRequestHandlerConformance:
        with handler(cookiejar=cookiejar) as rh:
            ws = ws_validate_and_send(rh, Request(self.ws_base_url))
            ws.send('headers')
-            assert json.loads(ws.recv())['cookie'] == 'test=ytdlp'
+            assert HTTPHeaderDict(json.loads(ws.recv()))['cookie'] == 'test=ytdlp'
            ws.close()

        with handler() as rh:
            ws = ws_validate_and_send(rh, Request(self.ws_base_url))
            ws.send('headers')
-            assert 'cookie' not in json.loads(ws.recv())
+            assert 'cookie' not in HTTPHeaderDict(json.loads(ws.recv()))
            ws.close()

            ws = ws_validate_and_send(rh, Request(self.ws_base_url, extensions={'cookiejar': cookiejar}))
            ws.send('headers')
-            assert json.loads(ws.recv())['cookie'] == 'test=ytdlp'
+            assert HTTPHeaderDict(json.loads(ws.recv()))['cookie'] == 'test=ytdlp'
            ws.close()

    @pytest.mark.skip_handler('Websockets', 'Set-Cookie not supported by websockets')
@@ -287,7 +287,7 @@ class TestWebsSocketRequestHandlerConformance:
            ws_validate_and_send(rh, Request(f'{self.ws_base_url}/get_cookie', extensions={'cookiejar': YoutubeDLCookieJar()}))
            ws = ws_validate_and_send(rh, Request(self.ws_base_url, extensions={'cookiejar': YoutubeDLCookieJar()}))
            ws.send('headers')
-            assert 'cookie' not in json.loads(ws.recv())
+            assert 'cookie' not in HTTPHeaderDict(json.loads(ws.recv()))
            ws.close()

    @pytest.mark.skip_handler('Websockets', 'Set-Cookie not supported by websockets')
@@ -298,12 +298,12 @@ class TestWebsSocketRequestHandlerConformance:
            ws_validate_and_send(rh, Request(f'{self.ws_base_url}/get_cookie'))
            ws = ws_validate_and_send(rh, Request(self.ws_base_url))
            ws.send('headers')
-            assert json.loads(ws.recv())['cookie'] == 'test=ytdlp'
+            assert HTTPHeaderDict(json.loads(ws.recv()))['cookie'] == 'test=ytdlp'
            ws.close()
            cookiejar.clear_session_cookies()
            ws = ws_validate_and_send(rh, Request(self.ws_base_url))
            ws.send('headers')
-            assert 'cookie' not in json.loads(ws.recv())
+            assert 'cookie' not in HTTPHeaderDict(json.loads(ws.recv()))
            ws.close()

    def test_source_address(self, handler):
@@ -341,6 +341,14 @@ class TestWebsSocketRequestHandlerConformance:
            assert headers['test3'] == 'test3'
            ws.close()

+    def test_keep_header_casing(self, handler):
+        with handler(headers=HTTPHeaderDict({'x-TeSt1': 'test'})) as rh:
+            ws = ws_validate_and_send(rh, Request(self.ws_base_url, headers={'x-TeSt2': 'test'}, extensions={'keep_header_casing': True}))
+            ws.send('headers')
+            headers = json.loads(ws.recv())
+            assert 'x-TeSt1' in headers
+            assert 'x-TeSt2' in headers
+
    @pytest.mark.parametrize('client_cert', (
        {'client_certificate': os.path.join(MTLS_CERT_DIR, 'clientwithkey.crt')},
        {
--- a/test/test_youtube_signature.py
+++ b/test/test_youtube_signature.py
@@ -78,6 +78,61 @@ _SIG_TESTS = [
        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
        '0QJ8wRAIgXmPlOPSBkkUs1bYFYlJCfe29xxAj7v1pDL0QwbdV96sCIEzpWqMGkFR20CFOg51Tp-7vj_EMu-m37KtXJ2OySqa0q',
    ),
+    (
+        'https://www.youtube.com/s/player/643afba4/tv-player-ias.vflset/tv-player-ias.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        'AAOAOq0QJ8wRAIgXmPlOPSBkkUs1bYFYlJCfe29xx8j7vgpDL0QwbdV06sCIEzpWqMGkFR20CFOS21Tp-7vj_EMu-m37KtXJoOy1',
+    ),
+    (
+        'https://www.youtube.com/s/player/363db69b/player_ias.vflset/en_US/base.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        '0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpz2ICs6EVdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+    ),
+    (
+        'https://www.youtube.com/s/player/363db69b/player_ias_tce.vflset/en_US/base.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        '0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpz2ICs6EVdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+    ),
+    (
+        'https://www.youtube.com/s/player/4fcd6e4a/player_ias.vflset/en_US/base.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        'wAOAOq0QJ8ARAIgXmPlOPSBkkUs1bYFYlJCfe29xx8q7v1pDL0QwbdV96sCIEzpWqMGkFR20CFOg51Tp-7vj_EMu-m37KtXJoOySqa0',
+    ),
+    (
+        'https://www.youtube.com/s/player/4fcd6e4a/player_ias_tce.vflset/en_US/base.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        'wAOAOq0QJ8ARAIgXmPlOPSBkkUs1bYFYlJCfe29xx8q7v1pDL0QwbdV96sCIEzpWqMGkFR20CFOg51Tp-7vj_EMu-m37KtXJoOySqa0',
+    ),
+    (
+        'https://www.youtube.com/s/player/20830619/player_ias.vflset/en_US/base.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        '7AOq0QJ8wRAIgXmPlOPSBkkAs1bYFYlJCfe29xx8jOv1pDL0Q2bdV96sCIEzpWqMGkFR20CFOg51Tp-7vj_EMu-m37KtXJoOySqa0qaw',
+    ),
+    (
+        'https://www.youtube.com/s/player/20830619/player_ias_tce.vflset/en_US/base.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        '7AOq0QJ8wRAIgXmPlOPSBkkAs1bYFYlJCfe29xx8jOv1pDL0Q2bdV96sCIEzpWqMGkFR20CFOg51Tp-7vj_EMu-m37KtXJoOySqa0qaw',
+    ),
+    (
+        'https://www.youtube.com/s/player/20830619/player-plasma-ias-phone-en_US.vflset/base.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        '7AOq0QJ8wRAIgXmPlOPSBkkAs1bYFYlJCfe29xx8jOv1pDL0Q2bdV96sCIEzpWqMGkFR20CFOg51Tp-7vj_EMu-m37KtXJoOySqa0qaw',
+    ),
+    (
+        'https://www.youtube.com/s/player/20830619/player-plasma-ias-tablet-en_US.vflset/base.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        '7AOq0QJ8wRAIgXmPlOPSBkkAs1bYFYlJCfe29xx8jOv1pDL0Q2bdV96sCIEzpWqMGkFR20CFOg51Tp-7vj_EMu-m37KtXJoOySqa0qaw',
+    ),
+    (
+        'https://www.youtube.com/s/player/8a8ac953/player_ias_tce.vflset/en_US/base.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        'IAOAOq0QJ8wRAAgXmPlOPSBkkUs1bYFYlJCfe29xx8j7v1pDL0QwbdV96sCIEzpWqMGkFR20CFOg51Tp-7vj_E2u-m37KtXJoOySqa0',
+    ),
+    (
+        'https://www.youtube.com/s/player/8a8ac953/tv-player-es6.vflset/tv-player-es6.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        'IAOAOq0QJ8wRAAgXmPlOPSBkkUs1bYFYlJCfe29xx8j7v1pDL0QwbdV96sCIEzpWqMGkFR20CFOg51Tp-7vj_E2u-m37KtXJoOySqa0',
+    ),
 ]

 _NSIG_TESTS = [
@@ -201,6 +256,66 @@ _NSIG_TESTS = [
        'https://www.youtube.com/s/player/2f1832d2/player_ias.vflset/en_US/base.js',
        'YWt1qdbe8SAfkoPHW5d', 'RrRjWQOJmBiP',
    ),
+    (
+        'https://www.youtube.com/s/player/9c6dfc4a/player_ias.vflset/en_US/base.js',
+        'jbu7ylIosQHyJyJV', 'uwI0ESiynAmhNg',
+    ),
+    (
+        'https://www.youtube.com/s/player/e7567ecf/player_ias_tce.vflset/en_US/base.js',
+        'Sy4aDGc0VpYRR9ew_', '5UPOT1VhoZxNLQ',
+    ),
+    (
+        'https://www.youtube.com/s/player/d50f54ef/player_ias_tce.vflset/en_US/base.js',
+        'Ha7507LzRmH3Utygtj', 'XFTb2HoeOE5MHg',
+    ),
+    (
+        'https://www.youtube.com/s/player/074a8365/player_ias_tce.vflset/en_US/base.js',
+        'Ha7507LzRmH3Utygtj', 'ufTsrE0IVYrkl8v',
+    ),
+    (
+        'https://www.youtube.com/s/player/643afba4/player_ias.vflset/en_US/base.js',
+        'N5uAlLqm0eg1GyHO', 'dCBQOejdq5s-ww',
+    ),
+    (
+        'https://www.youtube.com/s/player/69f581a5/tv-player-ias.vflset/tv-player-ias.js',
+        '-qIP447rVlTTwaZjY', 'KNcGOksBAvwqQg',
+    ),
+    (
+        'https://www.youtube.com/s/player/643afba4/tv-player-ias.vflset/tv-player-ias.js',
+        'ir9-V6cdbCiyKxhr', '2PL7ZDYAALMfmA',
+    ),
+    (
+        'https://www.youtube.com/s/player/363db69b/player_ias.vflset/en_US/base.js',
+        'eWYu5d5YeY_4LyEDc', 'XJQqf-N7Xra3gg',
+    ),
+    (
+        'https://www.youtube.com/s/player/4fcd6e4a/player_ias.vflset/en_US/base.js',
+        'o_L251jm8yhZkWtBW', 'lXoxI3XvToqn6A',
+    ),
+    (
+        'https://www.youtube.com/s/player/4fcd6e4a/player_ias_tce.vflset/en_US/base.js',
+        'o_L251jm8yhZkWtBW', 'lXoxI3XvToqn6A',
+    ),
+    (
+        'https://www.youtube.com/s/player/20830619/tv-player-ias.vflset/tv-player-ias.js',
+        'ir9-V6cdbCiyKxhr', '9YE85kNjZiS4',
+    ),
+    (
+        'https://www.youtube.com/s/player/20830619/player-plasma-ias-phone-en_US.vflset/base.js',
+        'ir9-V6cdbCiyKxhr', '9YE85kNjZiS4',
+    ),
+    (
+        'https://www.youtube.com/s/player/20830619/player-plasma-ias-tablet-en_US.vflset/base.js',
+        'ir9-V6cdbCiyKxhr', '9YE85kNjZiS4',
+    ),
+    (
+        'https://www.youtube.com/s/player/8a8ac953/player_ias_tce.vflset/en_US/base.js',
+        'MiBYeXx_vRREbiCCmh', 'RtZYMVvmkE0JE',
+    ),
+    (
+        'https://www.youtube.com/s/player/8a8ac953/tv-player-es6.vflset/tv-player-es6.js',
+        'MiBYeXx_vRREbiCCmh', 'RtZYMVvmkE0JE',
+    ),
 ]


@@ -214,6 +329,8 @@ class TestPlayerInfo(unittest.TestCase):
            ('https://www.youtube.com/s/player/64dddad9/player-plasma-ias-phone-en_US.vflset/base.js', '64dddad9'),
            ('https://www.youtube.com/s/player/64dddad9/player-plasma-ias-phone-de_DE.vflset/base.js', '64dddad9'),
            ('https://www.youtube.com/s/player/64dddad9/player-plasma-ias-tablet-en_US.vflset/base.js', '64dddad9'),
+            ('https://www.youtube.com/s/player/e7567ecf/player_ias_tce.vflset/en_US/base.js', 'e7567ecf'),
+            ('https://www.youtube.com/s/player/643afba4/tv-player-ias.vflset/tv-player-ias.js', '643afba4'),
            # obsolete
            ('https://www.youtube.com/yts/jsbin/player_ias-vfle4-e03/en_US/base.js', 'vfle4-e03'),
            ('https://www.youtube.com/yts/jsbin/player_ias-vfl49f_g4/en_US/base.js', 'vfl49f_g4'),
@@ -246,46 +363,51 @@ def t_factory(name, sig_func, url_pattern):
    def make_tfunc(url, sig_input, expected_sig):
        m = url_pattern.match(url)
        assert m, f'{url!r} should follow URL format'
-        test_id = m.group('id')
+        test_id = re.sub(r'[/.-]', '_', m.group('id') or m.group('compat_id'))

        def test_func(self):
-            basename = f'player-{name}-{test_id}.js'
+            basename = f'player-{test_id}.js'
            fn = os.path.join(self.TESTDATA_DIR, basename)

            if not os.path.exists(fn):
                urllib.request.urlretrieve(url, fn)
            with open(fn, encoding='utf-8') as testf:
                jscode = testf.read()
-            self.assertEqual(sig_func(jscode, sig_input), expected_sig)
+            self.assertEqual(sig_func(jscode, sig_input, url), expected_sig)

        test_func.__name__ = f'test_{name}_js_{test_id}'
        setattr(TestSignature, test_func.__name__, test_func)
    return make_tfunc


-def signature(jscode, sig_input):
-    func = YoutubeIE(FakeYDL())._parse_sig_js(jscode)
+def signature(jscode, sig_input, player_url):
+    func = YoutubeIE(FakeYDL())._parse_sig_js(jscode, player_url)
    src_sig = (
        str(string.printable[:sig_input])
        if isinstance(sig_input, int) else sig_input)
    return func(src_sig)


-def n_sig(jscode, sig_input):
+def n_sig(jscode, sig_input, player_url):
    ie = YoutubeIE(FakeYDL())
-    funcname = ie._extract_n_function_name(jscode)
+    funcname = ie._extract_n_function_name(jscode, player_url=player_url)
    jsi = JSInterpreter(jscode)
-    func = jsi.extract_function_from_code(*ie._fixup_n_function_code(*jsi.extract_function_code(funcname)))
+    func = jsi.extract_function_from_code(*ie._fixup_n_function_code(*jsi.extract_function_code(funcname), jscode, player_url))
    return func([sig_input])


 make_sig_test = t_factory(
-    'signature', signature, re.compile(r'.*(?:-|/player/)(?P<id>[a-zA-Z0-9_-]+)(?:/.+\.js|(?:/watch_as3|/html5player)?\.[a-z]+)$'))
+    'signature', signature,
+    re.compile(r'''(?x)
+        .+(?:
+            /player/(?P<id>[a-zA-Z0-9_/.-]+)|
+            /html5player-(?:en_US-)?(?P<compat_id>[a-zA-Z0-9_-]+)(?:/watch_as3|/html5player)?
+        )\.js$'''))
 for test_spec in _SIG_TESTS:
    make_sig_test(*test_spec)

 make_nsig_test = t_factory(
-    'nsig', n_sig, re.compile(r'.+/player/(?P<id>[a-zA-Z0-9_-]+)/.+.js$'))
+    'nsig', n_sig, re.compile(r'.+/player/(?P<id>[a-zA-Z0-9_/.-]+)\.js$'))
 for test_spec in _NSIG_TESTS:
    make_nsig_test(*test_spec)

--- a/test/testdata/plugin_packages/testpackage/yt_dlp_plugins/extractor/package.py
+++ b/test/testdata/plugin_packages/testpackage/yt_dlp_plugins/extractor/package.py
@@ -2,4 +2,5 @@ from yt_dlp.extractor.common import InfoExtractor


 class PackagePluginIE(InfoExtractor):
+    _VALID_URL = 'package'
    pass
--- a/test/testdata/reload_plugins/yt_dlp_plugins/extractor/normal.py
+++ b/test/testdata/reload_plugins/yt_dlp_plugins/extractor/normal.py
@@ -0,0 +1,10 @@
+from yt_dlp.extractor.common import InfoExtractor
+
+
+class NormalPluginIE(InfoExtractor):
+    _VALID_URL = 'normal'
+    REPLACED = True
+
+
+class _IgnoreUnderscorePluginIE(InfoExtractor):
+    pass
--- a/test/testdata/reload_plugins/yt_dlp_plugins/postprocessor/normal.py
+++ b/test/testdata/reload_plugins/yt_dlp_plugins/postprocessor/normal.py
@@ -0,0 +1,5 @@
+from yt_dlp.postprocessor.common import PostProcessor
+
+
+class NormalPluginPP(PostProcessor):
+    REPLACED = True
--- a/test/testdata/yt_dlp_plugins/extractor/ignore.py
+++ b/test/testdata/yt_dlp_plugins/extractor/ignore.py
@@ -6,6 +6,7 @@ class IgnoreNotInAllPluginIE(InfoExtractor):


 class InAllPluginIE(InfoExtractor):
+    _VALID_URL = 'inallpluginie'
    pass


--- a/test/testdata/yt_dlp_plugins/extractor/normal.py
+++ b/test/testdata/yt_dlp_plugins/extractor/normal.py
@@ -2,8 +2,10 @@ from yt_dlp.extractor.common import InfoExtractor


 class NormalPluginIE(InfoExtractor):
-    pass
+    _VALID_URL = 'normalpluginie'
+    REPLACED = False


 class _IgnoreUnderscorePluginIE(InfoExtractor):
+    _VALID_URL = 'ignoreunderscorepluginie'
    pass
--- a/test/testdata/yt_dlp_plugins/extractor/override.py
+++ b/test/testdata/yt_dlp_plugins/extractor/override.py
@@ -0,0 +1,5 @@
+from yt_dlp.extractor.generic import GenericIE
+
+
+class OverrideGenericIE(GenericIE, plugin_name='override'):
+    TEST_FIELD = 'override'
--- a/test/testdata/yt_dlp_plugins/extractor/overridetwo.py
+++ b/test/testdata/yt_dlp_plugins/extractor/overridetwo.py
@@ -0,0 +1,5 @@
+from yt_dlp.extractor.generic import GenericIE
+
+
+class _UnderscoreOverrideGenericIE(GenericIE, plugin_name='underscore-override'):
+    SECONDARY_TEST_FIELD = 'underscore-override'
--- a/test/testdata/yt_dlp_plugins/postprocessor/normal.py
+++ b/test/testdata/yt_dlp_plugins/postprocessor/normal.py
@@ -2,4 +2,4 @@ from yt_dlp.postprocessor.common import PostProcessor


 class NormalPluginPP(PostProcessor):
-    pass
+    REPLACED = False
--- a/test/testdata/zipped_plugins/yt_dlp_plugins/extractor/zipped.py
+++ b/test/testdata/zipped_plugins/yt_dlp_plugins/extractor/zipped.py
@@ -2,4 +2,5 @@ from yt_dlp.extractor.common import InfoExtractor


 class ZippedPluginIE(InfoExtractor):
+    _VALID_URL = 'zippedpluginie'
    pass