text: # coding: utf-8
  from __future__ import unicode_literals
  
  import json
  import re
  
  from .common import InfoExtractor
  from ..compat import (
      compat_etree_fromstring,
      compat_str,
      compat_urllib_parse_unquote,
      compat_urllib_parse_unquote_plus,
  )
  from ..utils import (
      clean_html,
      error_to_compat_str,
      ExtractorError,
      float_or_none,
      get_element_by_id,
      int_or_none,
      js_to_json,
      limit_length,
      network_exceptions,
      parse_count,
      qualities,
      sanitized_Request,
      try_get,
      urlencode_postdata,
      urljoin,
  )
  
  
  class FacebookIE(InfoExtractor):
      _VALID_URL = r'''(?x)
                  (?:
                      https?://
                          (?:[\w-]+\.)?(?:facebook\.com|facebookcorewwwi\.onion)/
                          (?:[^#]*?\#!/)?
                          (?:
                              (?:
                                  video/video\.php|
                                  photo\.php|
                                  video\.php|
                                  video/embed|
                                  story\.php|
                                  watch(?:/live)?/?
                              )\?(?:.*?)(?:v|video_id|story_fbid)=|
                              [^/]+/videos/(?:[^/]+/)?|
                              [^/]+/posts/|
                              groups/[^/]+/permalink/|
                              watchparty/
                          )|
                      facebook:
                  )
                  (?P<id>[0-9]+)
                  '''
      _LOGIN_URL = 'https://www.facebook.com/login.php?next=http%3A%2F%2Ffacebook.com%2Fhome.php&login_attempt=1'
      _CHECKPOINT_URL = 'https://www.facebook.com/checkpoint/?next=http%3A%2F%2Ffacebook.com%2Fhome.php&_fb_noscript=1'
      _NETRC_MACHINE = 'facebook'
      IE_NAME = 'facebook'
  
      _VIDEO_PAGE_TEMPLATE = 'https://www.facebook.com/video/video.php?v=%s'
      _VIDEO_PAGE_TAHOE_TEMPLATE = 'https://www.facebook.com/video/tahoe/async/%s/?chain=true&isvideo=true&payloadtype=primary'
  
      _TESTS = [{
          'url': 'https://www.facebook.com/video.php?v=637842556329505&fref=nf',
          'md5': '6a40d33c0eccbb1af76cf0485a052659',
          'info_dict': {
              'id': '637842556329505',
              'ext': 'mp4',
              'title': 're:Did you know Kei Nishikori is the first Asian man to ever reach a Grand Slam',
              'uploader': 'Tennis on Facebook',
              'upload_date': '20140908',
              'timestamp': 1410199200,
          },
          'skip': 'Requires logging in',
      }, {
          # data.video
          'url': 'https://www.facebook.com/video.php?v=274175099429670',
          'info_dict': {
              'id': '274175099429670',
              'ext': 'mp4',
              'title': 're:^Asif Nawab Butt posted a video',
              'uploader': 'Asif Nawab Butt',
              'upload_date': '20140506',
              'timestamp': 1399398998,
              'thumbnail': r're:^https?://.*',
          },
          'expected_warnings': [
              'title'
          ]
      }, {
          'note': 'Video with DASH manifest',
          'url': 'https://www.facebook.com/video.php?v=957955867617029',
          'md5': 'b2c28d528273b323abe5c6ab59f0f030',
          'info_dict': {
              'id': '957955867617029',
              'ext': 'mp4',
              'title': 'When you post epic content on instagram.com/433 8 million followers, this is ...',
              'uploader': 'Demy de Zeeuw',
              'upload_date': '20160110',
              'timestamp': 1452431627,
          },
          'skip': 'Requires logging in',
      }, {
          'url': 'https://www.facebook.com/maxlayn/posts/10153807558977570',
          'md5': '037b1fa7f3c2d02b7a0d7bc16031ecc6',
          'info_dict': {
              'id': '544765982287235',
              'ext': 'mp4',
              'title': '"What are you doing running in the snow?"',
              'uploader': 'FailArmy',
          },
          'skip': 'Video gone',
      }, {
          'url': 'https://m.facebook.com/story.php?story_fbid=1035862816472149&id=116132035111903',
          'md5': '1deb90b6ac27f7efcf6d747c8a27f5e3',
          'info_dict': {
              'id': '1035862816472149',
              'ext': 'mp4',
              'title': 'What the Flock Is Going On In New Zealand  Credit: ViralHog',
              'uploader': 'S. Saint',
          },
          'skip': 'Video gone',
      }, {
          'note': 'swf params escaped',
          'url': 'https://www.facebook.com/barackobama/posts/10153664894881749',
          'md5': '97ba073838964d12c70566e0085c2b91',
          'info_dict': {
              'id': '10153664894881749',
              'ext': 'mp4',
              'title': 'Average time to confirm recent Supreme Court nominees: 67 days Longest it\'s t...',
              'thumbnail': r're:^https?://.*',
              'timestamp': 1456259628,
              'upload_date': '20160223',
              'uploader': 'Barack Obama',
          },
      }, {
          # have 1080P, but only up to 720p in swf params
          # data.video.story.attachments[].media
          'url': 'https://www.facebook.com/cnn/videos/10155529876156509/',
          'md5': '9571fae53d4165bbbadb17a94651dcdc',
          'info_dict': {
              'id': '10155529876156509',
              'ext': 'mp4',
              'title': 'She survived the holocaust — and years later, she’s getting her citizenship s...',
              'timestamp': 1477818095,
              'upload_date': '20161030',
              'uploader': 'CNN',
              'thumbnail': r're:^https?://.*',
              'view_count': int,
          },
      }, {
          # bigPipe.onPageletArrive ... onPageletArrive pagelet_group_mall
          # data.node.comet_sections.content.story.attachments[].style_type_renderer.attachment.media
          'url': 'https://www.facebook.com/yaroslav.korpan/videos/1417995061575415/',
          'info_dict': {
              'id': '1417995061575415',
              'ext': 'mp4',
              'title': 'md5:1db063d6a8c13faa8da727817339c857',
              'timestamp': 1486648217,
              'upload_date': '20170209',
              'uploader': 'Yaroslav Korpan',
          },
          'params': {
              'skip_download': True,
          },
      }, {
          'url': 'https://www.facebook.com/LaGuiaDelVaron/posts/1072691702860471',
          'info_dict': {
              'id': '1072691702860471',
              'ext': 'mp4',
              'title': 'md5:ae2d22a93fbb12dad20dc393a869739d',
              'timestamp': 1477305000,
              'upload_date': '20161024',
              'uploader': 'La Guía Del Varón',
              'thumbnail': r're:^https?://.*',
          },
          'params': {
              'skip_download': True,
          },
      }, {
          # data.node.comet_sections.content.story.attachments[].style_type_renderer.attachment.media
          'url': 'https://www.facebook.com/groups/1024490957622648/permalink/1396382447100162/',
          'info_dict': {
              'id': '1396382447100162',
              'ext': 'mp4',
              'title': 'md5:19a428bbde91364e3de815383b54a235',
              'timestamp': 1486035494,
              'upload_date': '20170202',
              'uploader': 'Elisabeth Ahtn',
          },
          'params': {
              'skip_download': True,
          },
      }, {
          'url': 'https://www.facebook.com/video.php?v=10204634152394104',
          'only_matching': True,
      }, {
          'url': 'https://www.facebook.com/amogood/videos/1618742068337349/?fref=nf',
          'only_matching': True,
      }, {
          # data.mediaset.currMedia.edges
          'url': 'https://www.facebook.com/ChristyClarkForBC/videos/vb.22819070941/10153870694020942/?type=2&theater',
          'only_matching': True,
      }, {
          # data.video.story.attachments[].media
          'url': 'facebook:544765982287235',
          'only_matching': True,
      }, {
          # data.node.comet_sections.content.story.attachments[].style_type_renderer.attachment.media
          'url': 'https://www.facebook.com/groups/164828000315060/permalink/764967300301124/',
          'only_matching': True,
      }, {
          # data.video.creation_story.attachments[].media
          'url': 'https://zh-hk.facebook.com/peoplespower/videos/1135894589806027/',
          'only_matching': True,
      }, {
          # data.video
          'url': 'https://www.facebookcorewwwi.onion/video.php?v=274175099429670',
          'only_matching': True,
      }, {
          # no title
          'url': 'https://www.facebook.com/onlycleverentertainment/videos/1947995502095005/',
          'only_matching': True,
      }, {
          # data.video
          'url': 'https://www.facebook.com/WatchESLOne/videos/359649331226507/',
          'info_dict': {
              'id': '359649331226507',
              'ext': 'mp4',
              'title': '#ESLOne VoD - Birmingham Finals Day#1 Fnatic vs. @Evil Geniuses',
              'uploader': 'ESL One Dota 2',
          },
          'params': {
              'skip_download': True,
          },
      }, {
          # data.node.comet_sections.content.story.attachments[].style_type_renderer.attachment.all_subattachments.nodes[].media
          'url': 'https://www.facebook.com/100033620354545/videos/106560053808006/',
          'info_dict': {
              'id': '106560053808006',
          },
          'playlist_count': 2,
      }, {
          # data.video.story.attachments[].media
          'url': 'https://www.facebook.com/watch/?v=647537299265662',
          'only_matching': True,
      }, {
          # data.node.comet_sections.content.story.attachments[].style_type_renderer.attachment.all_subattachments.nodes[].media
          'url': 'https://www.facebook.com/PankajShahLondon/posts/10157667649866271',
          'info_dict': {
              'id': '10157667649866271',
          },
          'playlist_count': 3,
      }, {
          # data.nodes[].comet_sections.content.story.attachments[].style_type_renderer.attachment.media
          'url': 'https://m.facebook.com/Alliance.Police.Department/posts/4048563708499330',
          'info_dict': {
              'id': '117576630041613',
              'ext': 'mp4',
              # TODO: title can be extracted from video page
              'title': 'Facebook video #117576630041613',
              'uploader_id': '189393014416438',
              'upload_date': '20201123',
              'timestamp': 1606162592,
          },
          'skip': 'Requires logging in',
      }, {
          # node.comet_sections.content.story.attached_story.attachments.style_type_renderer.attachment.media
          'url': 'https://www.facebook.com/groups/ateistiskselskab/permalink/10154930137678856/',
          'info_dict': {
              'id': '211567722618337',
              'ext': 'mp4',
              'title': 'Facebook video #211567722618337',
              'uploader_id': '127875227654254',
              'upload_date': '20161122',
              'timestamp': 1479793574,
          },
      }, {
          # data.video.creation_story.attachments[].media
          'url': 'https://www.facebook.com/watch/live/?v=1823658634322275',
          'only_matching': True,
      }, {
          'url': 'https://www.facebook.com/watchparty/211641140192478',
          'info_dict': {
              'id': '211641140192478',
          },
          'playlist_count': 1,
          'skip': 'Requires logging in',
      }]
      _SUPPORTED_PAGLETS_REGEX = r'(?:pagelet_group_mall|permalink_video_pagelet|hyperfeed_story_id_[0-9a-f]+)'
      _api_config = {
          'graphURI': '/api/graphql/'
      }
  
      @staticmethod
      def _extract_urls(webpage):
          urls = []
          for mobj in re.finditer(
                  r'<iframe[^>]+?src=(["\'])(?P<url>https?://www\.facebook\.com/(?:video/embed|plugins/video\.php).+?)\1',
                  webpage):
              urls.append(mobj.group('url'))
          # Facebook API embed
          # see https://developers.facebook.com/docs/plugins/embedded-video-player
          for mobj in re.finditer(r'''(?x)<div[^>]+
                  class=(?P<q1>[\'"])[^\'"]*\bfb-(?:video|post)\b[^\'"]*(?P=q1)[^>]+
                  data-href=(?P<q2>[\'"])(?P<url>(?:https?:)?//(?:www\.)?facebook.com/.+?)(?P=q2)''', webpage):
              urls.append(mobj.group('url'))
          return urls
  
      def _login(self):
          useremail, password = self._get_login_info()
          if useremail is None:
              return
  
          login_page_req = sanitized_Request(self._LOGIN_URL)
          self._set_cookie('facebook.com', 'locale', 'en_US')
          login_page = self._download_webpage(login_page_req, None,
                                              note='Downloading login page',
                                              errnote='Unable to download login page')
          lsd = self._search_regex(
              r'<input type="hidden" name="lsd" value="([^"]*)"',
              login_page, 'lsd')
          lgnrnd = self._search_regex(r'name="lgnrnd" value="([^"]*?)"', login_page, 'lgnrnd')
  
          login_form = {
              'email': useremail,
              'pass': password,
              'lsd': lsd,
              'lgnrnd': lgnrnd,
              'next': 'http://facebook.com/home.php',
              'default_persistent': '0',
              'legacy_return': '1',
              'timezone': '-60',
              'trynum': '1',
          }
          request = sanitized_Request(self._LOGIN_URL, urlencode_postdata(login_form))
          request.add_header('Content-Type', 'application/x-www-form-urlencoded')
          try:
              login_results = self._download_webpage(request, None,
                                                     note='Logging in', errnote='unable to fetch login page')
              if re.search(r'<form(.*)name="login"(.*)</form>', login_results) is not None:
                  error = self._html_search_regex(
                      r'(?s)<div[^>]+class=(["\']).*?login_error_box.*?\1[^>]*><div[^>]*>.*?</div><div[^>]*>(?P<error>.+?)</div>',
                      login_results, 'login error', default=None, group='error')
                  if error:
                      raise ExtractorError('Unable to login: %s' % error, expected=True)
                  self.report_warning('unable to log in: bad username/password, or exceeded login rate limit (~3/min). Check credentials or wait.')
                  return
  
              fb_dtsg = self._search_regex(
                  r'name="fb_dtsg" value="(.+?)"', login_results, 'fb_dtsg', default=None)
              h = self._search_regex(
                  r'name="h"\s+(?:\w+="[^"]+"\s+)*?value="([^"]+)"', login_results, 'h', default=None)
  
              if not fb_dtsg or not h:
                  return
  
              check_form = {
                  'fb_dtsg': fb_dtsg,
                  'h': h,
                  'name_action_selected': 'dont_save',
              }
              check_req = sanitized_Request(self._CHECKPOINT_URL, urlencode_postdata(check_form))
              check_req.add_header('Content-Type', 'application/x-www-form-urlencoded')
              check_response = self._download_webpage(check_req, None,
                                                      note='Confirming login')
              if re.search(r'id="checkpointSubmitButton"', check_response) is not None:
                  self.report_warning('Unable to confirm login, you have to login in your browser and authorize the login.')
          except network_exceptions as err:
              self.report_warning('unable to log in: %s' % error_to_compat_str(err))
              return
  
      def _real_initialize(self):
          self._login()
  
      def _extract_from_url(self, url, video_id):
          webpage = self._download_webpage(
              url.replace('://m.facebook.com/', '://www.facebook.com/'), video_id)
  
          video_data = None
  
          def extract_video_data(instances):
              video_data = []
              for item in instances:
                  if try_get(item, lambda x: x[1][0]) == 'VideoConfig':
                      video_item = item[2][0]
                      if video_item.get('video_id'):
                          video_data.append(video_item['videoData'])
              return video_data
  
          server_js_data = self._parse_json(self._search_regex(
              [r'handleServerJS\(({.+})(?:\);|,")', r'\bs\.handle\(({.+?})\);'],
              webpage, 'server js data', default='{}'), video_id, fatal=False)
  
          if server_js_data:
              video_data = extract_video_data(server_js_data.get('instances', []))
  
          def extract_from_jsmods_instances(js_data):
              if js_data:
                  return extract_video_data(try_get(
                      js_data, lambda x: x['jsmods']['instances'], list) or [])
  
          def extract_dash_manifest(video, formats):
              dash_manifest = video.get('dash_manifest')
              if dash_manifest:
                  formats.extend(self._parse_mpd_formats(
                      compat_etree_fromstring(compat_urllib_parse_unquote_plus(dash_manifest))))
  
          def process_formats(formats):
              # Downloads with browser's User-Agent are rate limited. Working around
              # with non-browser User-Agent.
              for f in formats:
                  f.setdefault('http_headers', {})['User-Agent'] = 'facebookexternalhit/1.1'
  
              self._sort_formats(formats)
  
          def extract_relay_data(_filter):
              return self._parse_json(self._search_regex(
                  r'handleWithCustomApplyEach\([^,]+,\s*({.*?%s.*?})\);' % _filter,
                  webpage, 'replay data', default='{}'), video_id, fatal=False) or {}
  
          def extract_relay_prefetched_data(_filter):
              replay_data = extract_relay_data(_filter)
              for require in (replay_data.get('require') or []):
                  if require[0] == 'RelayPrefetchedStreamCache':
                      return try_get(require, lambda x: x[3][1]['__bbox']['result']['data'], dict) or {}
  
          if not video_data:
              server_js_data = self._parse_json(self._search_regex([
                  r'bigPipe\.onPageletArrive\(({.+?})\)\s*;\s*}\s*\)\s*,\s*["\']onPageletArrive\s+' + self._SUPPORTED_PAGLETS_REGEX,
                  r'bigPipe\.onPageletArrive\(({.*?id\s*:\s*"%s".*?})\);' % self._SUPPORTED_PAGLETS_REGEX
              ], webpage, 'js data', default='{}'), video_id, js_to_json, False)
              video_data = extract_from_jsmods_instances(server_js_data)
  
          if not video_data:
              data = extract_relay_prefetched_data(
                  r'"(?:dash_manifest|playable_url(?:_quality_hd)?)"\s*:\s*"[^"]+"')
              if data:
                  entries = []
  
                  def parse_graphql_video(video):
                      formats = []
                      q = qualities(['sd', 'hd'])
                      for (suffix, format_id) in [('', 'sd'), ('_quality_hd', 'hd')]:
                          playable_url = video.get('playable_url' + suffix)
                          if not playable_url:
                              continue
                          formats.append({
                              'format_id': format_id,
                              'quality': q(format_id),
                              'url': playable_url,
                          })
                      extract_dash_manifest(video, formats)
                      process_formats(formats)
                      v_id = video.get('videoId') or video.get('id') or video_id
                      info = {
                          'id': v_id,
                          'formats': formats,
                          'thumbnail': try_get(video, lambda x: x['thumbnailImage']['uri']),
                          'uploader_id': try_get(video, lambda x: x['owner']['id']),
                          'timestamp': int_or_none(video.get('publish_time')),
                          'duration': float_or_none(video.get('playable_duration_in_ms'), 1000),
                      }
                      description = try_get(video, lambda x: x['savable_description']['text'])
                      title = video.get('name')
                      if title:
                          info.update({
                              'title': title,
                              'description': description,
                          })
                      else:
                          info['title'] = description or 'Facebook video #%s' % v_id
                      entries.append(info)
  
                  def parse_attachment(attachment, key='media'):
                      media = attachment.get(key) or {}
                      if media.get('__typename') == 'Video':
                          return parse_graphql_video(media)
  
                  nodes = data.get('nodes') or []
                  node = data.get('node') or {}
                  if not nodes and node:
                      nodes.append(node)
                  for node in nodes:
                      story = try_get(node, lambda x: x['comet_sections']['content']['story'], dict) or {}
                      attachments = try_get(story, [
                          lambda x: x['attached_story']['attachments'],
                          lambda x: x['attachments']
                      ], list) or []
                      for attachment in attachments:
                          attachment = try_get(attachment, lambda x: x['style_type_renderer']['attachment'], dict)
                          ns = try_get(attachment, lambda x: x['all_subattachments']['nodes'], list) or []
                          for n in ns:
                              parse_attachment(n)
                          parse_attachment(attachment)
  
                  edges = try_get(data, lambda x: x['mediaset']['currMedia']['edges'], list) or []
                  for edge in edges:
                      parse_attachment(edge, key='node')
  
                  video = data.get('video') or {}
                  if video:
                      attachments = try_get(video, [
                          lambda x: x['story']['attachments'],
                          lambda x: x['creation_story']['attachments']
                      ], list) or []
                      for attachment in attachments:
                          parse_attachment(attachment)
                      if not entries:
                          parse_graphql_video(video)
  
                  return self.playlist_result(entries, video_id)
  
          if not video_data:
              m_msg = re.search(r'class="[^"]*uiInterstitialContent[^"]*"><div>(.*?)</div>', webpage)
              if m_msg is not None:
                  raise ExtractorError(
                      'The video is not available, Facebook said: "%s"' % m_msg.group(1),
                      expected=True)
              elif '>You must log in to continue' in webpage:
                  self.raise_login_required()
  
          if not video_data and '/watchparty/' in url:
              post_data = {
                  'doc_id': 3731964053542869,
                  'variables': json.dumps({
                      'livingRoomID': video_id,
                  }),
              }
  
              prefetched_data = extract_relay_prefetched_data(r'"login_data"\s*:\s*{')
              if prefetched_data:
                  lsd = try_get(prefetched_data, lambda x: x['login_data']['lsd'], dict)
                  if lsd:
                      post_data[lsd['name']] = lsd['value']
  
              relay_data = extract_relay_data(r'\[\s*"RelayAPIConfigDefaults"\s*,')
              for define in (relay_data.get('define') or []):
                  if define[0] == 'RelayAPIConfigDefaults':
                      self._api_config = define[2]
  
              living_room = self._download_json(
                  urljoin(url, self._api_config['graphURI']), video_id,
                  data=urlencode_postdata(post_data))['data']['living_room']
  
              entries = []
              for edge in (try_get(living_room, lambda x: x['recap']['watched_content']['edges']) or []):
                  video = try_get(edge, lambda x: x['node']['video']) or {}
                  v_id = video.get('id')
                  if not v_id:
                      continue
                  v_id = compat_str(v_id)
                  entries.append(self.url_result(
                      self._VIDEO_PAGE_TEMPLATE % v_id,
                      self.ie_key(), v_id, video.get('name')))
  
              return self.playlist_result(entries, video_id)
  
          if not video_data:
              # Video info not in first request, do a secondary request using
              # tahoe player specific URL
              tahoe_data = self._download_webpage(
                  self._VIDEO_PAGE_TAHOE_TEMPLATE % video_id, video_id,
                  data=urlencode_postdata({
                      '__a': 1,
                      '__pc': self._search_regex(
                          r'pkg_cohort["\']\s*:\s*["\'](.+?)["\']', webpage,
                          'pkg cohort', default='PHASED:DEFAULT'),
                      '__rev': self._search_regex(
                          r'client_revision["\']\s*:\s*(\d+),', webpage,
                          'client revision', default='3944515'),
                      'fb_dtsg': self._search_regex(
                          r'"DTSGInitialData"\s*,\s*\[\]\s*,\s*{\s*"token"\s*:\s*"([^"]+)"',
                          webpage, 'dtsg token', default=''),
                  }),
                  headers={
                      'Content-Type': 'application/x-www-form-urlencoded',
                  })
              tahoe_js_data = self._parse_json(
                  self._search_regex(
                      r'for\s+\(\s*;\s*;\s*\)\s*;(.+)', tahoe_data,
                      'tahoe js data', default='{}'),
                  video_id, fatal=False)
              video_data = extract_from_jsmods_instances(tahoe_js_data)
  
          if not video_data:
              raise ExtractorError('Cannot parse data')
  
          if len(video_data) > 1:
              entries = []
              for v in video_data:
                  video_url = v[0].get('video_url')
                  if not video_url:
                      continue
                  entries.append(self.url_result(urljoin(
                      url, video_url), self.ie_key(), v[0].get('video_id')))
              return self.playlist_result(entries, video_id)
          video_data = video_data[0]
  
          formats = []
          subtitles = {}
          for f in video_data:
              format_id = f['stream_type']
              if f and isinstance(f, dict):
                  f = [f]
              if not f or not isinstance(f, list):
                  continue
              for quality in ('sd', 'hd'):
                  for src_type in ('src', 'src_no_ratelimit'):
                      src = f[0].get('%s_%s' % (quality, src_type))
                      if src:
                          preference = -10 if format_id == 'progressive' else 0
                          if quality == 'hd':
                              preference += 5
                          formats.append({
                              'format_id': '%s_%s_%s' % (format_id, quality, src_type),
                              'url': src,
                              'quality': preference,
                          })
              extract_dash_manifest(f[0], formats)
              subtitles_src = f[0].get('subtitles_src')
              if subtitles_src:
                  subtitles.setdefault('en', []).append({'url': subtitles_src})
  
          process_formats(formats)
  
          video_title = self._html_search_regex(
              r'<h2\s+[^>]*class="uiHeaderTitle"[^>]*>([^<]*)</h2>', webpage,
              'title', default=None)
          if not video_title:
              video_title = self._html_search_regex(
                  r'(?s)<span class="fbPhotosPhotoCaption".*?id="fbPhotoPageCaption"><span class="hasCaption">(.*?)</span>',
                  webpage, 'alternative title', default=None)
          if not video_title:
              video_title = self._html_search_meta(
                  'description', webpage, 'title', default=None)
          if video_title:
              video_title = limit_length(video_title, 80)
          else:
              video_title = 'Facebook video #%s' % video_id
          uploader = clean_html(get_element_by_id(
              'fbPhotoPageAuthorName', webpage)) or self._search_regex(
              r'ownerName\s*:\s*"([^"]+)"', webpage, 'uploader',
              default=None) or self._og_search_title(webpage, fatal=False)
          timestamp = int_or_none(self._search_regex(
              r'<abbr[^>]+data-utime=["\'](\d+)', webpage,
              'timestamp', default=None))
          thumbnail = self._html_search_meta(['og:image', 'twitter:image'], webpage)
  
          view_count = parse_count(self._search_regex(
              r'\bviewCount\s*:\s*["\']([\d,.]+)', webpage, 'view count',
              default=None))
  
          info_dict = {
              'id': video_id,
              'title': video_title,
              'formats': formats,
              'uploader': uploader,
              'timestamp': timestamp,
              'thumbnail': thumbnail,
              'view_count': view_count,
              'subtitles': subtitles,
          }
  
          return info_dict
  
      def _real_extract(self, url):
          video_id = self._match_id(url)
  
          real_url = self._VIDEO_PAGE_TEMPLATE % video_id if url.startswith('facebook:') else url
          return self._extract_from_url(real_url, video_id)
  
  
  class FacebookPluginsVideoIE(InfoExtractor):
      _VALID_URL = r'https?://(?:[\w-]+\.)?facebook\.com/plugins/video\.php\?.*?\bhref=(?P<id>https.+)'
  
      _TESTS = [{
          'url': 'https://www.facebook.com/plugins/video.php?href=https%3A%2F%2Fwww.facebook.com%2Fgov.sg%2Fvideos%2F10154383743583686%2F&show_text=0&width=560',
          'md5': '5954e92cdfe51fe5782ae9bda7058a07',
          'info_dict': {
              'id': '10154383743583686',
              'ext': 'mp4',
              'title': 'What to do during the haze?',
              'uploader': 'Gov.sg',
              'upload_date': '20160826',
              'timestamp': 1472184808,
          },
          'add_ie': [FacebookIE.ie_key()],
      }, {
          'url': 'https://www.facebook.com/plugins/video.php?href=https%3A%2F%2Fwww.facebook.com%2Fvideo.php%3Fv%3D10204634152394104',
          'only_matching': True,
      }, {
          'url': 'https://www.facebook.com/plugins/video.php?href=https://www.facebook.com/gov.sg/videos/10154383743583686/&show_text=0&width=560',
          'only_matching': True,
      }]
  
      def _real_extract(self, url):
          return self.url_result(
              compat_urllib_parse_unquote(self._match_id(url)),
              FacebookIE.ie_key())
  