text: # coding: utf-8
  from __future__ import unicode_literals
  
  import json
  import re
  import socket
  
  from .common import InfoExtractor
  from ..compat import (
      compat_etree_fromstring,
      compat_http_client,
      compat_str,
      compat_urllib_error,
      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,
      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._downloader.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._downloader.report_warning(
                      "Unable to confirm login, you have to login in your browser and authorize the login."
                  )
          except (
              compat_urllib_error.URLError,
              compat_http_client.HTTPException,
              socket.error,
          ) as err:
              self._downloader.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 any(
                  p in webpage
                  for p in (
                      ">You must log in to continue",
                      'id="login_form"',
                      'id="loginbutton"',
                  )
              ):
                  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,
                                  "preference": preference,
                              }
                          )
              extract_dash_manifest(f[0], formats)
              subtitles_src = f[0].get("subtitles_src")
              if subtitles_src:
                  subtitles.setdefault("en", []).append({"url": subtitles_src})
          if not formats:
              raise ExtractorError("Cannot find video formats")
  
          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()
          )
  