text: from __future__ import unicode_literals
  
  import re
  
  from .common import InfoExtractor
  from ..utils import int_or_none
  
  
  class SciVeeIE(InfoExtractor):
      _VALID_URL = r'https?://(?:www\.)?scivee\.tv/node/(?P<id>\d+)'
  
      _TEST = {
          'url': 'http://www.scivee.tv/node/62352',
          'md5': 'b16699b74c9e6a120f6772a44960304f',
          'info_dict': {
              'id': '62352',
              'ext': 'mp4',
              'title': 'Adam Arkin at the 2014 DOE JGI Genomics of Energy & Environment Meeting',
              'description': 'md5:81f1710638e11a481358fab1b11059d7',
          },
      }
  
      def _real_extract(self, url):
          mobj = re.match(self._VALID_URL, url)
          video_id = mobj.group('id')
  
          # annotations XML is malformed
          annotations = self._download_webpage(
              'http://www.scivee.tv/assets/annotations/%s' % video_id, video_id, 'Downloading annotations')
  
          title = self._html_search_regex(r'<title>([^<]+)</title>', annotations, 'title')
          description = self._html_search_regex(r'<abstract>([^<]+)</abstract>', annotations, 'abstract', fatal=False)
          filesize = int_or_none(self._html_search_regex(
              r'<filesize>([^<]+)</filesize>', annotations, 'filesize', fatal=False))
  
          formats = [
              {
                  'url': 'http://www.scivee.tv/assets/audio/%s' % video_id,
                  'ext': 'mp3',
                  'format_id': 'audio',
              },
              {
                  'url': 'http://www.scivee.tv/assets/video/%s' % video_id,
                  'ext': 'mp4',
                  'format_id': 'video',
                  'filesize': filesize,
              },
          ]
  
          return {
              'id': video_id,
              'title': title,
              'description': description,
              'thumbnail': 'http://www.scivee.tv/assets/videothumb/%s' % video_id,
              'formats': formats,
          }
  