yt-dlp/yt_dlp/extractor/tiktok.py

# coding: utf-8
from __future__ import unicode_literals

import itertools
import random
import string
import time
import json

from .common import InfoExtractor
from ..compat import (
    compat_urllib_parse_unquote,
    compat_urllib_parse_urlparse
)
from ..utils import (
    ExtractorError,
    HEADRequest,
    get_first,
    int_or_none,
    join_nonempty,
    LazyList,
    srt_subtitles_timecode,
    str_or_none,
    traverse_obj,
    try_get,
    url_or_none,
    qualities,
)


class TikTokBaseIE(InfoExtractor):
    _APP_VERSIONS = [('20.9.3', '293'), ('20.4.3', '243'), ('20.2.1', '221'), ('20.1.2', '212'), ('20.0.4', '204')]
    _WORKING_APP_VERSION = None
    _APP_NAME = 'trill'
    _AID = 1180
    _API_HOSTNAME = 'api-h2.tiktokv.com'
    _UPLOADER_URL_FORMAT = 'https://www.tiktok.com/@%s'
    _WEBPAGE_HOST = 'https://www.tiktok.com/'
    QUALITIES = ('360p', '540p', '720p', '1080p')

    def _call_api_impl(self, ep, query, manifest_app_version, video_id, fatal=True,
                       note='Downloading API JSON', errnote='Unable to download API page'):
        self._set_cookie(self._API_HOSTNAME, 'odin_tt', ''.join(random.choice('0123456789abcdef') for _ in range(160)))
        webpage_cookies = self._get_cookies(self._WEBPAGE_HOST)
        if webpage_cookies.get('sid_tt'):
            self._set_cookie(self._API_HOSTNAME, 'sid_tt', webpage_cookies['sid_tt'].value)
        return self._download_json(
            'https://%s/aweme/v1/%s/' % (self._API_HOSTNAME, ep), video_id=video_id,
            fatal=fatal, note=note, errnote=errnote, headers={
                'User-Agent': f'com.ss.android.ugc.trill/{manifest_app_version} (Linux; U; Android 10; en_US; Pixel 4; Build/QQ3A.200805.001; Cronet/58.0.2991.0)',
                'Accept': 'application/json',
            }, query=query)

    def _build_api_query(self, query, app_version, manifest_app_version):
        return {
            **query,
            'version_name': app_version,
            'version_code': manifest_app_version,
            'build_number': app_version,
            'manifest_version_code': manifest_app_version,
            'update_version_code': manifest_app_version,
            'openudid': ''.join(random.choice('0123456789abcdef') for _ in range(16)),
            'uuid': ''.join([random.choice(string.digits) for _ in range(16)]),
            '_rticket': int(time.time() * 1000),
            'ts': int(time.time()),
            'device_brand': 'Google',
            'device_type': 'Pixel 4',
            'device_platform': 'android',
            'resolution': '1080*1920',
            'dpi': 420,
            'os_version': '10',
            'os_api': '29',
            'carrier_region': 'US',
            'sys_region': 'US',
            'region': 'US',
            'app_name': self._APP_NAME,
            'app_language': 'en',
            'language': 'en',
            'timezone_name': 'America/New_York',
            'timezone_offset': '-14400',
            'channel': 'googleplay',
            'ac': 'wifi',
            'mcc_mnc': '310260',
            'is_my_cn': 0,
            'aid': self._AID,
            'ssmix': 'a',
            'as': 'a1qwert123',
            'cp': 'cbfhckdckkde1',
        }

    def _call_api(self, ep, query, video_id, fatal=True,
                  note='Downloading API JSON', errnote='Unable to download API page'):
        if not self._WORKING_APP_VERSION:
            app_version = self._configuration_arg('app_version', [''], ie_key=TikTokIE.ie_key())[0]
            manifest_app_version = self._configuration_arg('manifest_app_version', [''], ie_key=TikTokIE.ie_key())[0]
            if app_version and manifest_app_version:
                self._WORKING_APP_VERSION = (app_version, manifest_app_version)
                self.write_debug('Imported app version combo from extractor arguments')
            elif app_version or manifest_app_version:
                self.report_warning('Only one of the two required version params are passed as extractor arguments', only_once=True)

        if self._WORKING_APP_VERSION:
            app_version, manifest_app_version = self._WORKING_APP_VERSION
            real_query = self._build_api_query(query, app_version, manifest_app_version)
            return self._call_api_impl(ep, real_query, manifest_app_version, video_id, fatal, note, errnote)

        for count, (app_version, manifest_app_version) in enumerate(self._APP_VERSIONS, start=1):
            real_query = self._build_api_query(query, app_version, manifest_app_version)
            try:
                res = self._call_api_impl(ep, real_query, manifest_app_version, video_id, fatal, note, errnote)
                self._WORKING_APP_VERSION = (app_version, manifest_app_version)
                return res
            except ExtractorError as e:
                if isinstance(e.cause, json.JSONDecodeError) and e.cause.pos == 0:
                    if count == len(self._APP_VERSIONS):
                        if fatal:
                            raise e
                        else:
                            self.report_warning(str(e.cause or e.msg))
                            return
                    self.report_warning('%s. Retrying... (attempt %s of %s)' % (str(e.cause or e.msg), count, len(self._APP_VERSIONS)))
                    continue
                raise e

    def _get_subtitles(self, aweme_detail, aweme_id):
        # TODO: Extract text positioning info
        subtitles = {}
        captions_info = traverse_obj(
            aweme_detail, ('interaction_stickers', ..., 'auto_video_caption_info', 'auto_captions', ...), expected_type=dict, default=[])
        for caption in captions_info:
            caption_url = traverse_obj(caption, ('url', 'url_list', ...), expected_type=url_or_none, get_all=False)
            if not caption_url:
                continue
            caption_json = self._download_json(
                caption_url, aweme_id, note='Downloading captions', errnote='Unable to download captions', fatal=False)
            if not caption_json:
                continue
            subtitles.setdefault(caption.get('language', 'en'), []).append({
                'ext': 'srt',
                'data': '\n\n'.join(
                    f'{i + 1}\n{srt_subtitles_timecode(line["start_time"] / 1000)} --> {srt_subtitles_timecode(line["end_time"] / 1000)}\n{line["text"]}'
                    for i, line in enumerate(caption_json['utterances']) if line.get('text'))
            })
        return subtitles

    def _parse_aweme_video_app(self, aweme_detail):
        aweme_id = aweme_detail['aweme_id']
        video_info = aweme_detail['video']

        def parse_url_key(url_key):
            format_id, codec, res, bitrate = self._search_regex(
                r'v[^_]+_(?P<id>(?P<codec>[^_]+)_(?P<res>\d+p)_(?P<bitrate>\d+))', url_key,
                'url key', default=(None, None, None, None), group=('id', 'codec', 'res', 'bitrate'))
            if not format_id:
                return {}, None
            return {
                'format_id': format_id,
                'vcodec': 'h265' if codec == 'bytevc1' else codec,
                'tbr': int_or_none(bitrate, scale=1000) or None,
                'quality': qualities(self.QUALITIES)(res),
            }, res

        known_resolutions = {}

        def extract_addr(addr, add_meta={}):
            parsed_meta, res = parse_url_key(addr.get('url_key', ''))
            if res:
                known_resolutions.setdefault(res, {}).setdefault('height', add_meta.get('height'))
                known_resolutions[res].setdefault('width', add_meta.get('width'))
                parsed_meta.update(known_resolutions.get(res, {}))
                add_meta.setdefault('height', int_or_none(res[:-1]))
            return [{
                'url': url,
                'filesize': int_or_none(addr.get('data_size')),
                'ext': 'mp4',
                'acodec': 'aac',
                'source_preference': -2 if 'aweme/v1' in url else -1,  # Downloads from API might get blocked
                **add_meta, **parsed_meta,
                'format_note': join_nonempty(
                    add_meta.get('format_note'), '(API)' if 'aweme/v1' in url else None, delim=' ')
            } for url in addr.get('url_list') or []]

        # Hack: Add direct video links first to prioritize them when removing duplicate formats
        formats = []
        if video_info.get('play_addr'):
            formats.extend(extract_addr(video_info['play_addr'], {
                'format_id': 'play_addr',
                'format_note': 'Direct video',
                'vcodec': 'h265' if traverse_obj(
                    video_info, 'is_bytevc1', 'is_h265') else 'h264',  # TODO: Check for "direct iOS" videos, like https://www.tiktok.com/@cookierun_dev/video/7039716639834656002
                'width': video_info.get('width'),
                'height': video_info.get('height'),
            }))
        if video_info.get('download_addr'):
            formats.extend(extract_addr(video_info['download_addr'], {
                'format_id': 'download_addr',
                'format_note': 'Download video%s' % (', watermarked' if video_info.get('has_watermark') else ''),
                'vcodec': 'h264',
                'width': video_info.get('width'),
                'height': video_info.get('height'),
                'preference': -2 if video_info.get('has_watermark') else -1,
            }))
        if video_info.get('play_addr_h264'):
            formats.extend(extract_addr(video_info['play_addr_h264'], {
                'format_id': 'play_addr_h264',
                'format_note': 'Direct video',
                'vcodec': 'h264',
            }))
        if video_info.get('play_addr_bytevc1'):
            formats.extend(extract_addr(video_info['play_addr_bytevc1'], {
                'format_id': 'play_addr_bytevc1',
                'format_note': 'Direct video',
                'vcodec': 'h265',
            }))

        for bitrate in video_info.get('bit_rate', []):
            if bitrate.get('play_addr'):
                formats.extend(extract_addr(bitrate['play_addr'], {
                    'format_id': bitrate.get('gear_name'),
                    'format_note': 'Playback video',
                    'tbr': try_get(bitrate, lambda x: x['bit_rate'] / 1000),
                    'vcodec': 'h265' if traverse_obj(
                        bitrate, 'is_bytevc1', 'is_h265') else 'h264',
                    'fps': bitrate.get('FPS'),
                }))

        self._remove_duplicate_formats(formats)
        auth_cookie = self._get_cookies(self._WEBPAGE_HOST).get('sid_tt')
        if auth_cookie:
            for f in formats:
                self._set_cookie(compat_urllib_parse_urlparse(f['url']).hostname, 'sid_tt', auth_cookie.value)
        self._sort_formats(formats, ('quality', 'codec', 'size', 'br'))

        thumbnails = []
        for cover_id in ('cover', 'ai_dynamic_cover', 'animated_cover', 'ai_dynamic_cover_bak',
                         'origin_cover', 'dynamic_cover'):
            cover = video_info.get(cover_id)
            if cover:
                for cover_url in cover['url_list']:
                    thumbnails.append({
                        'id': cover_id,
                        'url': cover_url,
                    })

        stats_info = aweme_detail.get('statistics', {})
        author_info = aweme_detail.get('author', {})
        music_info = aweme_detail.get('music', {})
        user_url = self._UPLOADER_URL_FORMAT % (traverse_obj(author_info,
                                                             'sec_uid', 'id', 'uid', 'unique_id',
                                                             expected_type=str_or_none, get_all=False))
        labels = traverse_obj(aweme_detail, ('hybrid_label', ..., 'text'), expected_type=str, default=[])

        contained_music_track = traverse_obj(
            music_info, ('matched_song', 'title'), ('matched_pgc_sound', 'title'), expected_type=str)
        contained_music_author = traverse_obj(
            music_info, ('matched_song', 'author'), ('matched_pgc_sound', 'author'), 'author', expected_type=str)

        is_generic_og_trackname = music_info.get('is_original_sound') and music_info.get('title') == 'original sound - %s' % music_info.get('owner_handle')
        if is_generic_og_trackname:
            music_track, music_author = contained_music_track or 'original sound', contained_music_author
        else:
            music_track, music_author = music_info.get('title'), music_info.get('author')

        return {
            'id': aweme_id,
            'title': aweme_detail['desc'],
            'description': aweme_detail['desc'],
            'view_count': int_or_none(stats_info.get('play_count')),
            'like_count': int_or_none(stats_info.get('digg_count')),
            'repost_count': int_or_none(stats_info.get('share_count')),
            'comment_count': int_or_none(stats_info.get('comment_count')),
            'uploader': str_or_none(author_info.get('unique_id')),
            'creator': str_or_none(author_info.get('nickname')),
            'uploader_id': str_or_none(author_info.get('uid')),
            'uploader_url': user_url,
            'track': music_track,
            'album': str_or_none(music_info.get('album')) or None,
            'artist': music_author,
            'timestamp': int_or_none(aweme_detail.get('create_time')),
            'formats': formats,
            'subtitles': self.extract_subtitles(aweme_detail, aweme_id),
            'thumbnails': thumbnails,
            'duration': int_or_none(traverse_obj(video_info, 'duration', ('download_addr', 'duration')), scale=1000),
            'availability': self._availability(
                is_private='Private' in labels,
                needs_subscription='Friends only' in labels,
                is_unlisted='Followers only' in labels)
        }

    def _parse_aweme_video_web(self, aweme_detail, webpage_url):
        video_info = aweme_detail['video']
        author_info = traverse_obj(aweme_detail, 'authorInfo', 'author', expected_type=dict, default={})
        music_info = aweme_detail.get('music') or {}
        stats_info = aweme_detail.get('stats') or {}
        user_url = self._UPLOADER_URL_FORMAT % (traverse_obj(author_info,
                                                             'secUid', 'id', 'uid', 'uniqueId',
                                                             expected_type=str_or_none, get_all=False)
                                                or aweme_detail.get('authorSecId'))

        formats = []
        play_url = video_info.get('playAddr')
        width = video_info.get('width')
        height = video_info.get('height')
        if isinstance(play_url, str):
            formats = [{
                'url': self._proto_relative_url(play_url),
                'ext': 'mp4',
                'width': width,
                'height': height,
            }]
        elif isinstance(play_url, list):
            formats = [{
                'url': self._proto_relative_url(url),
                'ext': 'mp4',
                'width': width,
                'height': height,
            } for url in traverse_obj(play_url, (..., 'src'), expected_type=url_or_none, default=[]) if url]

        download_url = url_or_none(video_info.get('downloadAddr')) or traverse_obj(video_info, ('download', 'url'), expected_type=url_or_none)
        if download_url:
            formats.append({
                'format_id': 'download',
                'url': self._proto_relative_url(download_url),
                'ext': 'mp4',
                'width': width,
                'height': height,
            })
        self._remove_duplicate_formats(formats)
        self._sort_formats(formats)

        thumbnails = []
        for thumbnail_name in ('thumbnail', 'cover', 'dynamicCover', 'originCover'):
            if aweme_detail.get(thumbnail_name):
                thumbnails = [{
                    'url': self._proto_relative_url(aweme_detail[thumbnail_name]),
                    'width': width,
                    'height': height
                }]

        return {
            'id': traverse_obj(aweme_detail, 'id', 'awemeId', expected_type=str_or_none),
            'title': aweme_detail.get('desc'),
            'duration': try_get(aweme_detail, lambda x: x['video']['duration'], int),
            'view_count': int_or_none(stats_info.get('playCount')),
            'like_count': int_or_none(stats_info.get('diggCount')),
            'repost_count': int_or_none(stats_info.get('shareCount')),
            'comment_count': int_or_none(stats_info.get('commentCount')),
            'timestamp': int_or_none(aweme_detail.get('createTime')),
            'creator': str_or_none(author_info.get('nickname')),
            'uploader': str_or_none(author_info.get('uniqueId') or aweme_detail.get('author')),
            'uploader_id': str_or_none(author_info.get('id') or aweme_detail.get('authorId')),
            'uploader_url': user_url,
            'track': str_or_none(music_info.get('title')),
            'album': str_or_none(music_info.get('album')) or None,
            'artist': str_or_none(music_info.get('authorName')),
            'formats': formats,
            'thumbnails': thumbnails,
            'description': str_or_none(aweme_detail.get('desc')),
            'http_headers': {
                'Referer': webpage_url
            }
        }


class TikTokIE(TikTokBaseIE):
    _VALID_URL = r'https?://www\.tiktok\.com/@[\w\.-]+/video/(?P<id>\d+)'

    _TESTS = [{
        'url': 'https://www.tiktok.com/@leenabhushan/video/6748451240264420610',
        'md5': '736bb7a466c6f0a6afeb597da1e6f5b7',
        'info_dict': {
            'id': '6748451240264420610',
            'ext': 'mp4',
            'title': '#jassmanak #lehanga #leenabhushan',
            'description': '#jassmanak #lehanga #leenabhushan',
            'duration': 13,
            'height': 1024,
            'width': 576,
            'uploader': 'leenabhushan',
            'uploader_id': '6691488002098119685',
            'uploader_url': 'https://www.tiktok.com/@MS4wLjABAAAA_Eb4t1vodM1IuTy_cvp9CY22RAb59xqrO0Xtz9CYQJvgXaDvZxYnZYRzDWhhgJmy',
            'creator': 'facestoriesbyleenabh',
            'thumbnail': r're:^https?://[\w\/\.\-]+(~[\w\-]+\.image)?',
            'upload_date': '20191016',
            'timestamp': 1571246252,
            'view_count': int,
            'like_count': int,
            'repost_count': int,
            'comment_count': int,
        }
    }, {
        'url': 'https://www.tiktok.com/@patroxofficial/video/6742501081818877190?langCountry=en',
        'md5': '6f3cf8cdd9b28cb8363fe0a9a160695b',
        'info_dict': {
            'id': '6742501081818877190',
            'ext': 'mp4',
            'title': 'md5:5e2a23877420bb85ce6521dbee39ba94',
            'description': 'md5:5e2a23877420bb85ce6521dbee39ba94',
            'duration': 27,
            'height': 960,
            'width': 540,
            'uploader': 'patrox',
            'uploader_id': '18702747',
            'uploader_url': 'https://www.tiktok.com/@MS4wLjABAAAAiFnldaILebi5heDoVU6bn4jBWWycX6-9U3xuNPqZ8Ws',
            'creator': 'patroX',
            'thumbnail': r're:^https?://[\w\/\.\-]+(~[\w\-]+\.image)?',
            'upload_date': '20190930',
            'timestamp': 1569860870,
            'view_count': int,
            'like_count': int,
            'repost_count': int,
            'comment_count': int,
        }
    }, {
        # Banned audio, only available on the app
        'url': 'https://www.tiktok.com/@barudakhb_/video/6984138651336838402',
        'info_dict': {
            'id': '6984138651336838402',
            'ext': 'mp4',
            'title': 'Balas @yolaaftwsr hayu yu ? #SquadRandom_ 🔥',
            'description': 'Balas @yolaaftwsr hayu yu ? #SquadRandom_ 🔥',
            'uploader': 'barudakhb_',
            'creator': 'md5:29f238c49bc0c176cb3cef1a9cea9fa6',
            'uploader_id': '6974687867511718913',
            'uploader_url': 'https://www.tiktok.com/@MS4wLjABAAAAbhBwQC-R1iKoix6jDFsF-vBdfx2ABoDjaZrM9fX6arU3w71q3cOWgWuTXn1soZ7d',
            'track': 'Boka Dance',
            'artist': 'md5:29f238c49bc0c176cb3cef1a9cea9fa6',
            'timestamp': 1626121503,
            'duration': 18,
            'thumbnail': r're:^https?://[\w\/\.\-]+(~[\w\-]+\.image)?',
            'upload_date': '20210712',
            'view_count': int,
            'like_count': int,
            'repost_count': int,
            'comment_count': int,
        }
    }, {
        # Sponsored video, only available with feed workaround
        'url': 'https://www.tiktok.com/@MS4wLjABAAAATh8Vewkn0LYM7Fo03iec3qKdeCUOcBIouRk1mkiag6h3o_pQu_dUXvZ2EZlGST7_/video/7042692929109986561',
        'info_dict': {
            'id': '7042692929109986561',
            'ext': 'mp4',
            'title': 'Slap and Run!',
            'description': 'Slap and Run!',
            'uploader': 'user440922249',
            'creator': 'Slap And Run',
            'uploader_id': '7036055384943690754',
            'uploader_url': 'https://www.tiktok.com/@MS4wLjABAAAATh8Vewkn0LYM7Fo03iec3qKdeCUOcBIouRk1mkiag6h3o_pQu_dUXvZ2EZlGST7_',
            'track': 'Promoted Music',
            'timestamp': 1639754738,
            'duration': 30,
            'thumbnail': r're:^https?://[\w\/\.\-]+(~[\w\-]+\.image)?',
            'upload_date': '20211217',
            'view_count': int,
            'like_count': int,
            'repost_count': int,
            'comment_count': int,
        },
        'expected_warnings': ['Video not available']
    }, {
        # Auto-captions available
        'url': 'https://www.tiktok.com/@hankgreen1/video/7047596209028074758',
        'only_matching': True
    }]

    def _extract_aweme_app(self, aweme_id):
        try:
            aweme_detail = self._call_api('aweme/detail', {'aweme_id': aweme_id}, aweme_id,
                                          note='Downloading video details', errnote='Unable to download video details').get('aweme_detail')
            if not aweme_detail:
                raise ExtractorError('Video not available', video_id=aweme_id)
        except ExtractorError as e:
            self.report_warning(f'{e}; Retrying with feed workaround')
            feed_list = self._call_api('feed', {'aweme_id': aweme_id}, aweme_id,
                                       note='Downloading video feed', errnote='Unable to download video feed').get('aweme_list') or []
            aweme_detail = next((aweme for aweme in feed_list if str(aweme.get('aweme_id')) == aweme_id), None)
            if not aweme_detail:
                raise ExtractorError('Unable to find video in feed', video_id=aweme_id)
        return self._parse_aweme_video_app(aweme_detail)

    def _real_extract(self, url):
        video_id = self._match_id(url)

        try:
            return self._extract_aweme_app(video_id)
        except ExtractorError as e:
            self.report_warning(f'{e}; Retrying with webpage')

        # If we only call once, we get a 403 when downlaoding the video.
        self._download_webpage(url, video_id)
        webpage = self._download_webpage(url, video_id, note='Downloading video webpage')
        next_data = self._search_nextjs_data(webpage, video_id, default='{}')

        if next_data:
            status = traverse_obj(next_data, ('props', 'pageProps', 'statusCode'), expected_type=int) or 0
            video_data = traverse_obj(next_data, ('props', 'pageProps', 'itemInfo', 'itemStruct'), expected_type=dict)
        else:
            sigi_json = self._search_regex(
                r'>\s*window\[[\'"]SIGI_STATE[\'"]\]\s*=\s*(?P<sigi_state>{.+});',
                webpage, 'sigi data', group='sigi_state')
            sigi_data = self._parse_json(sigi_json, video_id)
            status = traverse_obj(sigi_data, ('VideoPage', 'statusCode'), expected_type=int) or 0
            video_data = traverse_obj(sigi_data, ('ItemModule', video_id), expected_type=dict)

        if status == 0:
            return self._parse_aweme_video_web(video_data, url)
        elif status == 10216:
            raise ExtractorError('This video is private', expected=True)
        raise ExtractorError('Video not available', video_id=video_id)


class TikTokUserIE(TikTokBaseIE):
    IE_NAME = 'tiktok:user'
    _VALID_URL = r'https?://(?:www\.)?tiktok\.com/@(?P<id>[\w\.-]+)/?(?:$|[#?])'
    _TESTS = [{
        'url': 'https://tiktok.com/@corgibobaa?lang=en',
        'playlist_mincount': 45,
        'info_dict': {
            'id': '6935371178089399301',
            'title': 'corgibobaa',
            'thumbnail': r're:https://.+_1080x1080\.webp'
        },
        'expected_warnings': ['Retrying']
    }, {
        'url': 'https://www.tiktok.com/@meme',
        'playlist_mincount': 593,
        'info_dict': {
            'id': '79005827461758976',
            'title': 'meme',
            'thumbnail': r're:https://.+_1080x1080\.webp'
        },
        'expected_warnings': ['Retrying']
    }]

    r'''  # TODO: Fix by adding _signature to api_url
    def _entries(self, webpage, user_id, username):
        secuid = self._search_regex(r'\"secUid\":\"(?P<secUid>[^\"]+)', webpage, username)
        verifyfp_cookie = self._get_cookies('https://www.tiktok.com').get('s_v_web_id')
        if not verifyfp_cookie:
            raise ExtractorError('Improper cookies (missing s_v_web_id).', expected=True)
        api_url = f'https://m.tiktok.com/api/post/item_list/?aid=1988&cookie_enabled=true&count=30&verifyFp={verifyfp_cookie.value}&secUid={secuid}&cursor='
        cursor = '0'
        for page in itertools.count():
            data_json = self._download_json(api_url + cursor, username, note='Downloading Page %d' % page)
            for video in data_json.get('itemList', []):
                video_id = video['id']
                video_url = f'https://www.tiktok.com/@{user_id}/video/{video_id}'
                yield self._url_result(video_url, 'TikTok', video_id, str_or_none(video.get('desc')))
            if not data_json.get('hasMore'):
                break
            cursor = data_json['cursor']
    '''

    def _video_entries_api(self, webpage, user_id, username):
        query = {
            'user_id': user_id,
            'count': 21,
            'max_cursor': 0,
            'min_cursor': 0,
            'retry_type': 'no_retry',
            'device_id': ''.join(random.choice(string.digits) for _ in range(19)),  # Some endpoints don't like randomized device_id, so it isn't directly set in _call_api.
        }

        max_retries = self.get_param('extractor_retries', 3)
        for page in itertools.count(1):
            for retries in itertools.count():
                try:
                    post_list = self._call_api('aweme/post', query, username,
                                               note='Downloading user video list page %d%s' % (page, f' (attempt {retries})' if retries != 0 else ''),
                                               errnote='Unable to download user video list')
                except ExtractorError as e:
                    if isinstance(e.cause, json.JSONDecodeError) and e.cause.pos == 0 and retries != max_retries:
                        self.report_warning('%s. Retrying...' % str(e.cause or e.msg))
                        continue
                    raise
                break
            yield from post_list.get('aweme_list', [])
            if not post_list.get('has_more'):
                break
            query['max_cursor'] = post_list['max_cursor']

    def _entries_api(self, user_id, videos):
        for video in videos:
            yield {
                **self._parse_aweme_video_app(video),
                'extractor_key': TikTokIE.ie_key(),
                'extractor': 'TikTok',
                'webpage_url': f'https://tiktok.com/@{user_id}/video/{video["aweme_id"]}',
            }

    def _real_extract(self, url):
        user_name = self._match_id(url)
        webpage = self._download_webpage(url, user_name, headers={
            'User-Agent': 'facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)'
        })
        user_id = self._html_search_regex(r'snssdk\d*://user/profile/(\d+)', webpage, 'user ID')

        videos = LazyList(self._video_entries_api(webpage, user_id, user_name))
        thumbnail = traverse_obj(videos, (0, 'author', 'avatar_larger', 'url_list', 0))

        return self.playlist_result(self._entries_api(user_id, videos), user_id, user_name, thumbnail=thumbnail)


class TikTokBaseListIE(TikTokBaseIE):
    def _entries(self, list_id, display_id):
        query = {
            self._QUERY_NAME: list_id,
            'cursor': 0,
            'count': 20,
            'type': 5,
            'device_id': ''.join(random.choice(string.digits) for i in range(19))
        }

        max_retries = self.get_param('extractor_retries', 3)
        for page in itertools.count(1):
            for retries in itertools.count():
                try:
                    post_list = self._call_api(self._API_ENDPOINT, query, display_id,
                                               note='Downloading video list page %d%s' % (page, f' (attempt {retries})' if retries != 0 else ''),
                                               errnote='Unable to download video list')
                except ExtractorError as e:
                    if isinstance(e.cause, json.JSONDecodeError) and e.cause.pos == 0 and retries != max_retries:
                        self.report_warning('%s. Retrying...' % str(e.cause or e.msg))
                        continue
                    raise
                break
            for video in post_list.get('aweme_list', []):
                yield {
                    **self._parse_aweme_video_app(video),
                    'extractor_key': TikTokIE.ie_key(),
                    'extractor': 'TikTok',
                    'webpage_url': f'https://tiktok.com/@_/video/{video["aweme_id"]}',
                }
            if not post_list.get('has_more'):
                break
            query['cursor'] = post_list['cursor']

    def _real_extract(self, url):
        list_id = self._match_id(url)
        return self.playlist_result(self._entries(list_id, list_id), list_id)


class TikTokSoundIE(TikTokBaseListIE):
    IE_NAME = 'tiktok:sound'
    _VALID_URL = r'https?://(?:www\.)?tiktok\.com/music/[\w\.-]+-(?P<id>[\d]+)[/?#&]?'
    _QUERY_NAME = 'music_id'
    _API_ENDPOINT = 'music/aweme'
    _TESTS = [{
        'url': 'https://www.tiktok.com/music/Build-a-Btch-6956990112127585029?lang=en',
        'playlist_mincount': 100,
        'info_dict': {
            'id': '6956990112127585029'
        },
        'expected_warnings': ['Retrying']
    }, {
        # Actual entries are less than listed video count
        'url': 'https://www.tiktok.com/music/jiefei-soap-remix-7036843036118469381',
        'playlist_mincount': 2182,
        'info_dict': {
            'id': '7036843036118469381'
        },
        'expected_warnings': ['Retrying']
    }]


class TikTokEffectIE(TikTokBaseListIE):
    IE_NAME = 'tiktok:effect'
    _VALID_URL = r'https?://(?:www\.)?tiktok\.com/sticker/[\w\.-]+-(?P<id>[\d]+)[/?#&]?'
    _QUERY_NAME = 'sticker_id'
    _API_ENDPOINT = 'sticker/aweme'
    _TESTS = [{
        'url': 'https://www.tiktok.com/sticker/MATERIAL-GWOOORL-1258156',
        'playlist_mincount': 100,
        'info_dict': {
            'id': '1258156',
        },
        'expected_warnings': ['Retrying']
    }, {
        # Different entries between mobile and web, depending on region
        'url': 'https://www.tiktok.com/sticker/Elf-Friend-479565',
        'only_matching': True
    }]


class TikTokTagIE(TikTokBaseListIE):
    IE_NAME = 'tiktok:tag'
    _VALID_URL = r'https?://(?:www\.)?tiktok\.com/tag/(?P<id>[^/?#&]+)'
    _QUERY_NAME = 'ch_id'
    _API_ENDPOINT = 'challenge/aweme'
    _TESTS = [{
        'url': 'https://tiktok.com/tag/hello2018',
        'playlist_mincount': 39,
        'info_dict': {
            'id': '46294678',
            'title': 'hello2018',
        },
        'expected_warnings': ['Retrying']
    }, {
        'url': 'https://tiktok.com/tag/fypシ?is_copy_url=0&is_from_webapp=v1',
        'only_matching': True
    }]

    def _real_extract(self, url):
        display_id = self._match_id(url)
        webpage = self._download_webpage(url, display_id, headers={
            'User-Agent': 'facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)'
        })
        tag_id = self._html_search_regex(r'snssdk\d*://challenge/detail/(\d+)', webpage, 'tag ID')
        return self.playlist_result(self._entries(tag_id, display_id), tag_id, display_id)


class DouyinIE(TikTokIE):
    _VALID_URL = r'https?://(?:www\.)?douyin\.com/video/(?P<id>[0-9]+)'
    _TESTS = [{
        'url': 'https://www.douyin.com/video/6961737553342991651',
        'md5': '10523312c8b8100f353620ac9dc8f067',
        'info_dict': {
            'id': '6961737553342991651',
            'ext': 'mp4',
            'title': '#杨超越  小小水手带你去远航❤️',
            'uploader': '杨超越',
            'upload_date': '20210513',
            'timestamp': 1620905839,
            'uploader_id': '110403406559',
            'view_count': int,
            'like_count': int,
            'repost_count': int,
            'comment_count': int,
        }
    }, {
        'url': 'https://www.douyin.com/video/6982497745948921092',
        'md5': 'd78408c984b9b5102904cf6b6bc2d712',
        'info_dict': {
            'id': '6982497745948921092',
            'ext': 'mp4',
            'title': '这个夏日和小羊@杨超越 一起遇见白色幻想',
            'uploader': '杨超越工作室',
            'upload_date': '20210708',
            'timestamp': 1625739481,
            'uploader_id': '408654318141572',
            'view_count': int,
            'like_count': int,
            'repost_count': int,
            'comment_count': int,
        }
    }, {
        'url': 'https://www.douyin.com/video/6953975910773099811',
        'md5': '72e882e24f75064c218b76c8b713c185',
        'info_dict': {
            'id': '6953975910773099811',
            'ext': 'mp4',
            'title': '#一起看海  出现在你的夏日里',
            'uploader': '杨超越',
            'upload_date': '20210422',
            'timestamp': 1619098692,
            'uploader_id': '110403406559',
            'view_count': int,
            'like_count': int,
            'repost_count': int,
            'comment_count': int,
        }
    }, {
        'url': 'https://www.douyin.com/video/6950251282489675042',
        'md5': 'b4db86aec367ef810ddd38b1737d2fed',
        'info_dict': {
            'id': '6950251282489675042',
            'ext': 'mp4',
            'title': '哈哈哈，成功了哈哈哈哈哈哈',
            'uploader': '杨超越',
            'upload_date': '20210412',
            'timestamp': 1618231483,
            'uploader_id': '110403406559',
            'view_count': int,
            'like_count': int,
            'repost_count': int,
            'comment_count': int,
        }
    }, {
        'url': 'https://www.douyin.com/video/6963263655114722595',
        'md5': '1abe1c477d05ee62efb40bf2329957cf',
        'info_dict': {
            'id': '6963263655114722595',
            'ext': 'mp4',
            'title': '#哪个爱豆的105度最甜 换个角度看看我哈哈',
            'uploader': '杨超越',
            'upload_date': '20210517',
            'timestamp': 1621261163,
            'uploader_id': '110403406559',
            'view_count': int,
            'like_count': int,
            'repost_count': int,
            'comment_count': int,
        }
    }]
    _APP_VERSIONS = [('9.6.0', '960')]
    _APP_NAME = 'aweme'
    _AID = 1128
    _API_HOSTNAME = 'aweme.snssdk.com'
    _UPLOADER_URL_FORMAT = 'https://www.douyin.com/user/%s'
    _WEBPAGE_HOST = 'https://www.douyin.com/'

    def _real_extract(self, url):
        video_id = self._match_id(url)

        try:
            return self._extract_aweme_app(video_id)
        except ExtractorError as e:
            self.report_warning(f'{e}; Retrying with webpage')

        webpage = self._download_webpage(url, video_id)
        render_data_json = self._search_regex(
            r'<script [^>]*\bid=[\'"]RENDER_DATA[\'"][^>]*>(%7B.+%7D)</script>',
            webpage, 'render data', default=None)
        if not render_data_json:
            # TODO: Run verification challenge code to generate signature cookies
            raise ExtractorError('Fresh cookies (not necessarily logged in) are needed')

        render_data = self._parse_json(
            render_data_json, video_id, transform_source=compat_urllib_parse_unquote)
        return self._parse_aweme_video_web(get_first(render_data, ('aweme', 'detail')), url)


class TikTokVMIE(InfoExtractor):
    _VALID_URL = r'https?://(?:vm|vt)\.tiktok\.com/(?P<id>\w+)'
    IE_NAME = 'vm.tiktok'

    _TESTS = [{
        'url': 'https://vm.tiktok.com/ZSe4FqkKd',
        'info_dict': {
            'id': '7023491746608712966',
            'ext': 'mp4',
            'title': 'md5:5607564db90271abbbf8294cca77eddd',
            'description': 'md5:5607564db90271abbbf8294cca77eddd',
            'duration': 11,
            'upload_date': '20211026',
            'uploader_id': '7007385080558846981',
            'creator': 'Memes',
            'artist': 'Memes',
            'track': 'original sound',
            'uploader': 'susmandem',
            'timestamp': 1635284105,
            'thumbnail': r're:https://.+\.webp.*',
            'like_count': int,
            'view_count': int,
            'comment_count': int,
            'repost_count': int,
            'uploader_url': 'https://www.tiktok.com/@MS4wLjABAAAAXcNoOEOxVyBzuII_E--T0MeCrLP0ay1Sm6x_n3dluiWEoWZD0VlQOytwad4W0i0n',
        }
    }, {
        'url': 'https://vt.tiktok.com/ZSe4FqkKd',
        'only_matching': True,
    }]

    def _real_extract(self, url):
        return self.url_result(self._request_webpage(
            HEADRequest(url), self._match_id(url), headers={'User-Agent': 'facebookexternalhit/1.1'}).geturl(), TikTokIE)