text: from __future__ import unicode_literals
  
  import json
  
  from .common import InfoExtractor
  from ..utils import (
      float_or_none,
      int_or_none,
      sanitized_Request,
  )
  
  
  class CollegeRamaIE(InfoExtractor):
      _VALID_URL = r'https?://collegerama\.tudelft\.nl/Mediasite/Play/(?P<id>[\da-f]+)'
      _TESTS = [
          {
              'url': 'https://collegerama.tudelft.nl/Mediasite/Play/585a43626e544bdd97aeb71a0ec907a01d',
              'md5': '481fda1c11f67588c0d9d8fbdced4e39',
              'info_dict': {
                  'id': '585a43626e544bdd97aeb71a0ec907a01d',
                  'ext': 'mp4',
                  'title': 'Een nieuwe wereld: waarden, bewustzijn en techniek van de mensheid 2.0.',
                  'description': '',
                  'thumbnail': 're:^https?://.*\.jpg$',
                  'duration': 7713.088,
                  'timestamp': 1413309600,
                  'upload_date': '20141014',
              },
          },
          {
              'url': 'https://collegerama.tudelft.nl/Mediasite/Play/86a9ea9f53e149079fbdb4202b521ed21d?catalog=fd32fd35-6c99-466c-89d4-cd3c431bc8a4',
              'md5': 'ef1fdded95bdf19b12c5999949419c92',
              'info_dict': {
                  'id': '86a9ea9f53e149079fbdb4202b521ed21d',
                  'ext': 'wmv',
                  'title': '64ste Vakantiecursus: Afvalwater',
                  'description': 'md5:7fd774865cc69d972f542b157c328305',
                  'duration': 10853,
                  'timestamp': 1326446400,
                  'upload_date': '20120113',
              },
          },
      ]
  
      def _real_extract(self, url):
          video_id = self._match_id(url)
  
          player_options_request = {
              "getPlayerOptionsRequest": {
                  "ResourceId": video_id,
                  "QueryString": "",
              }
          }
  
          request = sanitized_Request(
              'http://collegerama.tudelft.nl/Mediasite/PlayerService/PlayerService.svc/json/GetPlayerOptions',
              json.dumps(player_options_request))
          request.add_header('Content-Type', 'application/json')
  
          player_options = self._download_json(request, video_id)
  
          presentation = player_options['d']['Presentation']
          title = presentation['Title']
          description = presentation.get('Description')
          thumbnail = None
          duration = float_or_none(presentation.get('Duration'), 1000)
          timestamp = int_or_none(presentation.get('UnixTime'), 1000)
  
          formats = []
          for stream in presentation['Streams']:
              for video in stream['VideoUrls']:
                  thumbnail_url = stream.get('ThumbnailUrl')
                  if thumbnail_url:
                      thumbnail = 'http://collegerama.tudelft.nl' + thumbnail_url
                  format_id = video['MediaType']
                  if format_id == 'SS':
                      continue
                  formats.append({
                      'url': video['Location'],
                      'format_id': format_id,
                  })
          self._sort_formats(formats)
  
          return {
              'id': video_id,
              'title': title,
              'description': description,
              'thumbnail': thumbnail,
              'duration': duration,
              'timestamp': timestamp,
              'formats': formats,
          }
  