text: # coding: utf-8
  
  from __future__ import unicode_literals
  
  from .common import InfoExtractor
  from ..utils import js_to_json
  
  
  class HelsinkiIE(InfoExtractor):
      IE_DESC = 'helsinki.fi'
      _VALID_URL = r'https?://video\.helsinki\.fi/Arkisto/flash\.php\?id=(?P<id>\d+)'
      _TEST = {
          'url': 'http://video.helsinki.fi/Arkisto/flash.php?id=20258',
          'info_dict': {
              'id': '20258',
              'ext': 'mp4',
              'title': 'Tietotekniikkafoorumi-iltapäivä',
              'description': 'md5:f5c904224d43c133225130fe156a5ee0',
          },
          'params': {
              'skip_download': True,  # RTMP
          }
      }
  
      def _real_extract(self, url):
          video_id = self._match_id(url)
          webpage = self._download_webpage(url, video_id)
  
          params = self._parse_json(self._html_search_regex(
              r'(?s)jwplayer\("player"\).setup\((\{.*?\})\);',
              webpage, 'player code'), video_id, transform_source=js_to_json)
          formats = [{
              'url': s['file'],
              'ext': 'mp4',
          } for s in params['sources']]
          self._sort_formats(formats)
  
          return {
              'id': video_id,
              'title': self._og_search_title(webpage).replace('Video: ', ''),
              'description': self._og_search_description(webpage),
              'formats': formats,
          }
  