diff --git a/youtube_dl/extractor/tiktok.py b/youtube_dl/extractor/tiktok.py
index 4faa6de54..a1b91520b 100644
--- a/youtube_dl/extractor/tiktok.py
+++ b/youtube_dl/extractor/tiktok.py
@@ -1,11 +1,18 @@
 # coding: utf-8
 from __future__ import unicode_literals
 
+import re
+
 from .common import InfoExtractor
+from .generic import GenericIE
+from ..compat import (
+    compat_kwargs,
+)
 from ..utils import (
-    compat_str,
+    dict_get,
     ExtractorError,
     float_or_none,
+    get_element_by_id,
     int_or_none,
     str_or_none,
     try_get,
@@ -13,12 +20,44 @@ from ..utils import (
 )
 
 
+# decorator enforces UA that TT doesn't block
+def vanilla_UA_request(func):
+
+    vanilla_UA = 'Mozilla/5.0'
+
+    def wrapped(*args, **kwargs):
+        headers = kwargs.get('headers', {})
+        if 'User-Agent' not in headers:
+            headers['User-Agent'] = vanilla_UA
+            kwargs.update({'headers': headers, })
+            kwargs = compat_kwargs(kwargs)
+        return func(*args, **kwargs)
+
+    return wrapped
+
+
 class TikTokBaseIE(InfoExtractor):
+    IE_DESC = 'Abstract base for TikTok extractors'
+    IE_NAME = 'tiktok:base'
+
+    @vanilla_UA_request
+    def _request_webpage(self, *args, **kwargs):
+        return super(TikTokBaseIE, self)._request_webpage(*args, **kwargs)
+
+    def _get_SIGI_STATE(self, video_id, html):
+        state = self._parse_json(
+            get_element_by_id('SIGI_STATE', html)
+            or self._search_regex(
+                r'''(?s)<script\s[^>]*?\bid\s*=\s*(?P<q>"|'|\b)sigi-persisted-data(?P=q)[^>]*>[^=]*=\s*(?P<json>{.+?})\s*(?:;[^<]+)?</script''',
+                html, 'sigi data', default='{}', group='json'), video_id)
+        return state if isinstance(state, dict) else {}
+
     def _extract_video(self, data, video_id=None):
-        video = data['video']
-        description = str_or_none(try_get(data, lambda x: x['desc']))
-        width = int_or_none(try_get(data, lambda x: video['width']))
-        height = int_or_none(try_get(data, lambda x: video['height']))
+        video = try_get(data, lambda x: x['video'], dict)
+        if not video:
+            return
+        width = int_or_none(video.get('width'))
+        height = int_or_none(video.get('height'))
 
         format_urls = set()
         formats = []
@@ -43,30 +82,32 @@ class TikTokBaseIE(InfoExtractor):
         thumbnail = url_or_none(video.get('cover'))
         duration = float_or_none(video.get('duration'))
 
-        uploader = try_get(data, lambda x: x['author']['nickname'], compat_str)
-        uploader_id = try_get(data, lambda x: x['author']['id'], compat_str)
+        author = data.get('author')
+        if isinstance(author, dict):
+            uploader_id = author.get('id')
+        else:
+            uploader_id = data.get('authorId')
+            author = data
+        uploader = str_or_none(author.get('nickname'))
 
         timestamp = int_or_none(data.get('createTime'))
 
-        def stats(key):
-            return int_or_none(try_get(
-                data, lambda x: x['stats']['%sCount' % key]))
-
-        view_count = stats('play')
-        like_count = stats('digg')
-        comment_count = stats('comment')
-        repost_count = stats('share')
+        stats = try_get(data, lambda x: x['stats'], dict)
+        view_count, like_count, comment_count, repost_count = [
+            stats and int_or_none(stats.get('%sCount' % key))
+            for key in ('play', 'digg', 'comment', 'share', )]
 
         aweme_id = data.get('id') or video_id
 
         return {
             'id': aweme_id,
+            'display_id': video_id,
             'title': uploader or aweme_id,
-            'description': description,
+            'description': str_or_none(data.get('desc')),
             'thumbnail': thumbnail,
             'duration': duration,
             'uploader': uploader,
-            'uploader_id': uploader_id,
+            'uploader_id': str_or_none(uploader_id),
             'timestamp': timestamp,
             'view_count': view_count,
             'like_count': like_count,
@@ -77,18 +118,20 @@ class TikTokBaseIE(InfoExtractor):
 
 
 class TikTokIE(TikTokBaseIE):
-    _VALID_URL = r'https?://(?:www\.)?tiktok\.com/@[^/]+/video/(?P<id>\d+)'
+    IE_DESC = 'TikTok video extractor'
+    IE_NAME = 'tiktok'
+    _VALID_URL = r'(?:https?://(?:(?:www|m)\.)?tiktok\.com/@[^/]+/video/|tiktok:(?P<user_id>[^/?#&]+):)(?P<id>\d+)'
     _TESTS = [{
         'url': 'https://www.tiktok.com/@zureeal/video/6606727368545406213',
         'md5': '163ceff303bb52de60e6887fe399e6cd',
         'info_dict': {
             'id': '6606727368545406213',
             'ext': 'mp4',
-            'title': 'Zureeal',
+            'title': 'md5:363e08ccb6c691314710429f379bffe5',
             'description': '#bowsette#mario#cosplay#uk#lgbt#gaming#asian#bowsettecosplay',
             'thumbnail': r're:^https?://.*',
             'duration': 15,
-            'uploader': 'Zureeal',
+            'uploader': 'md5:363e08ccb6c691314710429f379bffe5',
             'uploader_id': '188294915489964032',
             'timestamp': 1538248586,
             'upload_date': '20180929',
@@ -105,34 +148,75 @@ class TikTokIE(TikTokBaseIE):
             'https://www.tiktok.com/', None, note='Setting up session')
 
     def _real_extract(self, url):
-        video_id = self._match_id(url)
-        webpage = self._download_webpage(url, video_id)
-        page_props = self._parse_json(self._search_regex(
-            r'<script[^>]+\bid=["\']__NEXT_DATA__[^>]+>\s*({.+?})\s*</script',
-            webpage, 'data'), video_id)['props']['pageProps']
+        m = re.match(self._VALID_URL, url).groupdict()
+        video_id = m['id']
+        if 'user_id' in m:
+            url = 'https://www.tiktok.com/@%(user_id)s/video/%(id)s/' % m
+
+        webpage = self._download_webpage(url.replace('://m.', '://www.'), video_id)
+
+        page_props = self._get_SIGI_STATE(video_id, webpage)
+        if try_get(page_props, lambda x: x['ItemModule'][video_id]['video'], dict):
+            data = page_props['ItemModule'][video_id]
+            if data.get('privateItem'):
+                raise ExtractorError('This video is private', expected=True)
+            return self._extract_video(data, video_id)
+
+        # old page format - may still be served?
+        page_props = self._parse_json(
+            get_element_by_id('__NEXT_DATA__', webpage),
+            video_id)['props']['pageProps']
         data = try_get(page_props, lambda x: x['itemInfo']['itemStruct'], dict)
         if not data and page_props.get('statusCode') == 10216:
             raise ExtractorError('This video is private', expected=True)
         return self._extract_video(data, video_id)
 
 
-class TikTokUserIE(TikTokBaseIE):
-    _VALID_URL = r'https://(?:www\.)?tiktok\.com/@(?P<id>[^/?#&]+)'
+class TikTokUserIE(TikTokIE):
+    IE_DESC = 'TikTok user profile extractor'
+    IE_NAME = 'tiktok:user'
+    _VALID_URL = r'https?://(?:(?:www|m)\.)?tiktok\.com/@(?P<id>[^/?#&]+)'
     _TESTS = [{
         'url': 'https://www.tiktok.com/@zureeal',
         'info_dict': {
             'id': '188294915489964032',
         },
-        'playlist_mincount': 24,
+        'playlist_mincount': 30,
+        'expected_warnings': [
+            'More videos are available',
+        ],
     }]
-    _WORKING = False
 
     @classmethod
     def suitable(cls, url):
-        return False if TikTokIE.suitable(url) else super(TikTokUserIE, cls).suitable(url)
+        return False if TikTokIE.suitable(url) else super(TikTokBaseIE, cls).suitable(url)
 
     def _real_extract(self, url):
         user_id = self._match_id(url)
+
+        webpage = self._download_webpage(url.replace('://m.', '://www.'), user_id)
+
+        page_props = self._get_SIGI_STATE(user_id, webpage)
+        user_data = try_get(page_props, lambda x: x['UserModule']['users'], dict)
+        if user_data:
+            num_id = try_get(
+                user_data.values(),
+                lambda x: [user['id'] for user in x if user['uniqueId'] == user_id and user['id'].isdigit()][0])
+            item_data = try_get(page_props, lambda x: x['ItemList']['user-post'], dict) or {}
+            item_list = dict_get(item_data, ('list', 'browserList'))
+            if not item_list:
+                item_list = try_get(item_data, lambda x: [y['id'] for y in x['preloadList']], list)
+            entries = ['tiktok:%s:%s' % (user_id, x, ) for x in item_list or []]
+            if item_data.get('hasMore', False):
+                self._downloader.report_warning('More videos are available but the current extractor doesn\'t know how to find them')
+
+            result = entries and self.playlist_from_matches(entries, num_id, ie='TikTok')
+            if result:
+                result['display_id'] = user_id
+                return result
+
+        """
+        # this no longer works 2022-01
         data = self._download_json(
             'https://m.tiktok.com/h5/share/usr/list/%s/' % user_id, user_id,
             query={'_signature': '_'})
@@ -145,3 +229,27 @@ class TikTokUserIE(TikTokBaseIE):
             entry['extractor_key'] = TikTokIE.ie_key()
             entries.append(entry)
         return self.playlist_result(entries, user_id)
+        """
+
+
+class TikTokVMIE(GenericIE):
+    IE_DESC = 'Resolver for TikTok shortcuts'
+    IE_NAME = 'tiktok:shortcut'
+    _VALID_URL = r'https?://(?:vm\.tiktok\.com|m\.tiktok\.com/v)/(?P<id>[^/?#&.]+)'
+    _TESTS = [{
+        'url': 'https://vm.tiktok.com/ZMLesneqK/',
+        'info_dict': {
+            'id': '7054218882072055046',
+            'ext': 'mp4',
+            'title': 'EddY',
+            'upload_date': '20220117',
+            'description': 'Hilft bestimmt gegen nervige Anrufer! 😂 #telefon #call #prank #fail #sprecher #stimme #voice #band #ansage #sound #comedy #unterhaltung #scammer #fy',
+            'timestamp': 1642438324,
+            'uploader': 'EddY',
+            'uploader_id': '6850021004246467590',
+        },
+    }]
+
+    @vanilla_UA_request
+    def _request_webpage(self, *args, **kwargs):
+        return super(GenericIE, self)._request_webpage(*args, **kwargs)
\ No newline at end of file