text: # coding: utf-8
  from __future__ import unicode_literals
  
  import re
  import base64
  
  from .common import InfoExtractor
  from ..compat import (
      compat_urlparse,
      compat_parse_qs,
  )
  from ..utils import (
      clean_html,
      ExtractorError,
      int_or_none,
      unsmuggle_url,
      smuggle_url,
  )
  
  
  class KalturaIE(InfoExtractor):
      _VALID_URL = r'''(?x)
                  (?:
                      kaltura:(?P<partner_id>\d+):(?P<id>[0-9a-z_]+)|
                      https?://
                          (:?(?:www|cdnapi(?:sec)?)\.)?kaltura\.com(?::\d+)?/
                          (?:
                              (?:
                                  # flash player
                                  index\.php/(?:kwidget|extwidget/preview)|
                                  # html5 player
                                  html5/html5lib/[^/]+/mwEmbedFrame\.php
                              )
                          )(?:/(?P<path>[^?]+))?(?:\?(?P<query>.*))?
                  )
                  '''
      _SERVICE_URL = 'http://cdnapi.kaltura.com'
      _SERVICE_BASE = '/api_v3/index.php'
      # See https://github.com/kaltura/server/blob/master/plugins/content/caption/base/lib/model/enums/CaptionType.php
      _CAPTION_TYPES = {
          1: 'srt',
          2: 'ttml',
          3: 'vtt',
      }
      _TESTS = [
          {
              'url': 'kaltura:269692:1_1jc2y3e4',
              'md5': '3adcbdb3dcc02d647539e53f284ba171',
              'info_dict': {
                  'id': '1_1jc2y3e4',
                  'ext': 'mp4',
                  'title': 'Straight from the Heart',
                  'upload_date': '20131219',
                  'uploader_id': 'mlundberg@wolfgangsvault.com',
                  'description': 'The Allman Brothers Band, 12/16/1981',
                  'thumbnail': 're:^https?://.*/thumbnail/.*',
                  'timestamp': int,
              },
          },
          {
              'url': 'http://www.kaltura.com/index.php/kwidget/cache_st/1300318621/wid/_269692/uiconf_id/3873291/entry_id/1_1jc2y3e4',
              'only_matching': True,
          },
          {
              'url': 'https://cdnapisec.kaltura.com/index.php/kwidget/wid/_557781/uiconf_id/22845202/entry_id/1_plr1syf3',
              'only_matching': True,
          },
          {
              'url': 'https://cdnapisec.kaltura.com/html5/html5lib/v2.30.2/mwEmbedFrame.php/p/1337/uiconf_id/20540612/entry_id/1_sf5ovm7u?wid=_243342',
              'only_matching': True,
          },
          {
              # video with subtitles
              'url': 'kaltura:111032:1_cw786r8q',
              'only_matching': True,
          },
          {
              # video with ttml subtitles (no fileExt)
              'url': 'kaltura:1926081:0_l5ye1133',
              'info_dict': {
                  'id': '0_l5ye1133',
                  'ext': 'mp4',
                  'title': 'What Can You Do With Python?',
                  'upload_date': '20160221',
                  'uploader_id': 'stork',
                  'thumbnail': 're:^https?://.*/thumbnail/.*',
                  'timestamp': int,
                  'subtitles': {
                      'en': [{
                          'ext': 'ttml',
                      }],
                  },
              },
              'skip': 'Gone. Maybe https://www.safaribooksonline.com/library/tutorials/introduction-to-python-anon/3469/',
              'params': {
                  'skip_download': True,
              },
          },
          {
              'url': 'https://www.kaltura.com/index.php/extwidget/preview/partner_id/1770401/uiconf_id/37307382/entry_id/0_58u8kme7/embed/iframe?&flashvars[streamerType]=auto',
              'only_matching': True,
          },
          {
              'url': 'https://www.kaltura.com:443/index.php/extwidget/preview/partner_id/1770401/uiconf_id/37307382/entry_id/0_58u8kme7/embed/iframe?&flashvars[streamerType]=auto',
              'only_matching': True,
          }
      ]
  
      @staticmethod
      def _extract_url(webpage):
          # Embed codes: https://knowledge.kaltura.com/embedding-kaltura-media-players-your-site
          mobj = (
              re.search(
                  r"""(?xs)
                      kWidget\.(?:thumb)?[Ee]mbed\(
                      \{.*?
                          (?P<q1>['"])wid(?P=q1)\s*:\s*
                          (?P<q2>['"])_?(?P<partner_id>(?:(?!(?P=q2)).)+)(?P=q2),.*?
                          (?P<q3>['"])entry_?[Ii]d(?P=q3)\s*:\s*
                          (?P<q4>['"])(?P<id>(?:(?!(?P=q4)).)+)(?P=q4)(?:,|\s*\})
                  """, webpage) or
              re.search(
                  r'''(?xs)
                      (?P<q1>["'])
                          (?:https?:)?//cdnapi(?:sec)?\.kaltura\.com(?::\d+)?/(?:(?!(?P=q1)).)*\b(?:p|partner_id)/(?P<partner_id>\d+)(?:(?!(?P=q1)).)*
                      (?P=q1).*?
                      (?:
                          (?:
                              entry_?[Ii]d|
                              (?P<q2>["'])entry_?[Ii]d(?P=q2)
                          )\s*:\s*|
                          \[\s*(?P<q2_1>["'])entry_?[Ii]d(?P=q2_1)\s*\]\s*=\s*
                      )
                      (?P<q3>["'])(?P<id>(?:(?!(?P=q3)).)+)(?P=q3)
                  ''', webpage) or
              re.search(
                  r'''(?xs)
                      <iframe[^>]+src=(?P<q1>["'])
                        (?:https?:)?//(?:www\.)?kaltura\.com/(?:(?!(?P=q1)).)*\b(?:p|partner_id)/(?P<partner_id>\d+)
                        (?:(?!(?P=q1)).)*
                        [?&]entry_id=(?P<id>(?:(?!(?P=q1))[^&])+)
                      (?P=q1)
                  ''', webpage)
          )
          if mobj:
              embed_info = mobj.groupdict()
              url = 'kaltura:%(partner_id)s:%(id)s' % embed_info
              escaped_pid = re.escape(embed_info['partner_id'])
              service_url = re.search(
                  r'<script[^>]+src=["\']((?:https?:)?//.+?)/p/%s/sp/%s00/embedIframeJs' % (escaped_pid, escaped_pid),
                  webpage)
              if service_url:
                  url = smuggle_url(url, {'service_url': service_url.group(1)})
              return url
  
      def _kaltura_api_call(self, video_id, actions, service_url=None, *args, **kwargs):
          params = actions[0]
          if len(actions) > 1:
              for i, a in enumerate(actions[1:], start=1):
                  for k, v in a.items():
                      params['%d:%s' % (i, k)] = v
  
          data = self._download_json(
              (service_url or self._SERVICE_URL) + self._SERVICE_BASE,
              video_id, query=params, *args, **kwargs)
  
          status = data if len(actions) == 1 else data[0]
          if status.get('objectType') == 'KalturaAPIException':
              raise ExtractorError(
                  '%s said: %s' % (self.IE_NAME, status['message']))
  
          return data
  
      def _get_video_info(self, video_id, partner_id, service_url=None):
          actions = [
              {
                  'action': 'null',
                  'apiVersion': '3.1.5',
                  'clientTag': 'kdp:v3.8.5',
                  'format': 1,  # JSON, 2 = XML, 3 = PHP
                  'service': 'multirequest',
              },
              {
                  'expiry': 86400,
                  'service': 'session',
                  'action': 'startWidgetSession',
                  'widgetId': '_%s' % partner_id,
              },
              {
                  'action': 'get',
                  'entryId': video_id,
                  'service': 'baseentry',
                  'ks': '{1:result:ks}',
              },
              {
                  'action': 'getbyentryid',
                  'entryId': video_id,
                  'service': 'flavorAsset',
                  'ks': '{1:result:ks}',
              },
              {
                  'action': 'list',
                  'filter:entryIdEqual': video_id,
                  'service': 'caption_captionasset',
                  'ks': '{1:result:ks}',
              },
          ]
          return self._kaltura_api_call(
              video_id, actions, service_url, note='Downloading video info JSON')
  
      def _real_extract(self, url):
          url, smuggled_data = unsmuggle_url(url, {})
  
          mobj = re.match(self._VALID_URL, url)
          partner_id, entry_id = mobj.group('partner_id', 'id')
          ks = None
          captions = None
          if partner_id and entry_id:
              _, info, flavor_assets, captions = self._get_video_info(entry_id, partner_id, smuggled_data.get('service_url'))
          else:
              path, query = mobj.group('path', 'query')
              if not path and not query:
                  raise ExtractorError('Invalid URL', expected=True)
              params = {}
              if query:
                  params = compat_parse_qs(query)
              if path:
                  splitted_path = path.split('/')
                  params.update(dict((zip(splitted_path[::2], [[v] for v in splitted_path[1::2]]))))
              if 'wid' in params:
                  partner_id = params['wid'][0][1:]
              elif 'p' in params:
                  partner_id = params['p'][0]
              elif 'partner_id' in params:
                  partner_id = params['partner_id'][0]
              else:
                  raise ExtractorError('Invalid URL', expected=True)
              if 'entry_id' in params:
                  entry_id = params['entry_id'][0]
                  _, info, flavor_assets, captions = self._get_video_info(entry_id, partner_id)
              elif 'uiconf_id' in params and 'flashvars[referenceId]' in params:
                  reference_id = params['flashvars[referenceId]'][0]
                  webpage = self._download_webpage(url, reference_id)
                  entry_data = self._parse_json(self._search_regex(
                      r'window\.kalturaIframePackageData\s*=\s*({.*});',
                      webpage, 'kalturaIframePackageData'),
                      reference_id)['entryResult']
                  info, flavor_assets = entry_data['meta'], entry_data['contextData']['flavorAssets']
                  entry_id = info['id']
                  # Unfortunately, data returned in kalturaIframePackageData lacks
                  # captions so we will try requesting the complete data using
                  # regular approach since we now know the entry_id
                  try:
                      _, info, flavor_assets, captions = self._get_video_info(
                          entry_id, partner_id)
                  except ExtractorError:
                      # Regular scenario failed but we already have everything
                      # extracted apart from captions and can process at least
                      # with this
                      pass
              else:
                  raise ExtractorError('Invalid URL', expected=True)
              ks = params.get('flashvars[ks]', [None])[0]
  
          source_url = smuggled_data.get('source_url')
          if source_url:
              referrer = base64.b64encode(
                  '://'.join(compat_urlparse.urlparse(source_url)[:2])
                  .encode('utf-8')).decode('utf-8')
          else:
              referrer = None
  
          def sign_url(unsigned_url):
              if ks:
                  unsigned_url += '/ks/%s' % ks
              if referrer:
                  unsigned_url += '?referrer=%s' % referrer
              return unsigned_url
  
          data_url = info['dataUrl']
          if '/flvclipper/' in data_url:
              data_url = re.sub(r'/flvclipper/.*', '/serveFlavor', data_url)
  
          formats = []
          for f in flavor_assets:
              # Continue if asset is not ready
              if f.get('status') != 2:
                  continue
              # Original format that's not available (e.g. kaltura:1926081:0_c03e1b5g)
              # skip for now.
              if f.get('fileExt') == 'chun':
                  continue
              # DRM-protected video, cannot be decrypted
              if f.get('fileExt') == 'wvm':
                  continue
              if not f.get('fileExt'):
                  # QT indicates QuickTime; some videos have broken fileExt
                  if f.get('containerFormat') == 'qt':
                      f['fileExt'] = 'mov'
                  else:
                      f['fileExt'] = 'mp4'
              video_url = sign_url(
                  '%s/flavorId/%s' % (data_url, f['id']))
              # audio-only has no videoCodecId (e.g. kaltura:1926081:0_c03e1b5g
              # -f mp4-56)
              vcodec = 'none' if 'videoCodecId' not in f and f.get(
                  'frameRate') == 0 else f.get('videoCodecId')
              formats.append({
                  'format_id': '%(fileExt)s-%(bitrate)s' % f,
                  'ext': f.get('fileExt'),
                  'tbr': int_or_none(f['bitrate']),
                  'fps': int_or_none(f.get('frameRate')),
                  'filesize_approx': int_or_none(f.get('size'), invscale=1024),
                  'container': f.get('containerFormat'),
                  'vcodec': vcodec,
                  'height': int_or_none(f.get('height')),
                  'width': int_or_none(f.get('width')),
                  'url': video_url,
              })
          if '/playManifest/' in data_url:
              m3u8_url = sign_url(data_url.replace(
                  'format/url', 'format/applehttp'))
              formats.extend(self._extract_m3u8_formats(
                  m3u8_url, entry_id, 'mp4', 'm3u8_native',
                  m3u8_id='hls', fatal=False))
  
          self._sort_formats(formats)
  
          subtitles = {}
          if captions:
              for caption in captions.get('objects', []):
                  # Continue if caption is not ready
                  if caption.get('status') != 2:
                      continue
                  if not caption.get('id'):
                      continue
                  caption_format = int_or_none(caption.get('format'))
                  subtitles.setdefault(caption.get('languageCode') or caption.get('language'), []).append({
                      'url': '%s/api_v3/service/caption_captionasset/action/serve/captionAssetId/%s' % (self._SERVICE_URL, caption['id']),
                      'ext': caption.get('fileExt') or self._CAPTION_TYPES.get(caption_format) or 'ttml',
                  })
  
          return {
              'id': entry_id,
              'title': info['name'],
              'formats': formats,
              'subtitles': subtitles,
              'description': clean_html(info.get('description')),
              'thumbnail': info.get('thumbnailUrl'),
              'duration': info.get('duration'),
              'timestamp': info.get('createdAt'),
              'uploader_id': info.get('userId') if info.get('userId') != 'None' else None,
              'view_count': info.get('plays'),
          }
  