text: from __future__ import unicode_literals
  
  import re
  import json
  
  from .common import InfoExtractor
  from ..utils import (
      int_or_none,
      js_to_json,
      qualities,
  )
  
  
  class PornHdIE(InfoExtractor):
      _VALID_URL = r'http://(?:www\.)?pornhd\.com/(?:[a-z]{2,4}/)?videos/(?P<id>\d+)(?:/(?P<display_id>.+))?'
      _TEST = {
          'url': 'http://www.pornhd.com/videos/1962/sierra-day-gets-his-cum-all-over-herself-hd-porn-video',
          'md5': '956b8ca569f7f4d8ec563e2c41598441',
          'info_dict': {
              'id': '1962',
              'display_id': 'sierra-day-gets-his-cum-all-over-herself-hd-porn-video',
              'ext': 'mp4',
              'title': 'Sierra loves doing laundry',
              'description': 'md5:8ff0523848ac2b8f9b065ba781ccf294',
              'thumbnail': 're:^https?://.*\.jpg',
              'view_count': int,
              'age_limit': 18,
          }
      }
  
      def _real_extract(self, url):
          mobj = re.match(self._VALID_URL, url)
          video_id = mobj.group('id')
          display_id = mobj.group('display_id')
  
          webpage = self._download_webpage(url, display_id or video_id)
  
          title = self._html_search_regex(
              [r'<span[^>]+class=["\']video-name["\'][^>]*>([^<]+)',
               r'<title>(.+?) - .*?[Pp]ornHD.*?</title>'], webpage, 'title')
          description = self._html_search_regex(
              r'<div class="description">([^<]+)</div>', webpage, 'description', fatal=False)
          view_count = int_or_none(self._html_search_regex(
              r'(\d+) views\s*</span>', webpage, 'view count', fatal=False))
          thumbnail = self._search_regex(
              r"'poster'\s*:\s*'([^']+)'", webpage, 'thumbnail', fatal=False)
  
          quality = qualities(['sd', 'hd'])
          sources = json.loads(js_to_json(self._search_regex(
              r"(?s)'sources'\s*:\s*(\{.+?\})\s*\}[;,)]",
              webpage, 'sources')))
          formats = []
          for qname, video_url in sources.items():
              if not video_url:
                  continue
              formats.append({
                  'url': video_url,
                  'format_id': qname,
                  'quality': quality(qname),
              })
          self._sort_formats(formats)
  
          return {
              'id': video_id,
              'display_id': display_id,
              'title': title,
              'description': description,
              'thumbnail': thumbnail,
              'view_count': view_count,
              'formats': formats,
              'age_limit': 18,
          }
  