text: # coding: utf-8
  from __future__ import unicode_literals
  
  import re
  
  from .common import InfoExtractor
  from ..compat import (
      compat_str,
      compat_urllib_parse_urlencode,
  )
  from ..utils import (
      ExtractorError,
      int_or_none,
      try_get,
  )
  
  
  class SohuIE(InfoExtractor):
      _VALID_URL = r'https?://(?P<mytv>my\.)?tv\.sohu\.com/.+?/(?(mytv)|n)(?P<id>\d+)\.shtml.*?'
  
      # Sohu videos give different MD5 sums on Travis CI and my machine
      _TESTS = [{
          'note': 'This video is available only in Mainland China',
          'url': 'http://tv.sohu.com/20130724/n382479172.shtml#super',
          'info_dict': {
              'id': '382479172',
              'ext': 'mp4',
              'title': 'MV：Far East Movement《The Illest》',
          },
          'skip': 'On available in China',
      }, {
          'url': 'http://tv.sohu.com/20150305/n409385080.shtml',
          'info_dict': {
              'id': '409385080',
              'ext': 'mp4',
              'title': '《2015湖南卫视羊年元宵晚会》唐嫣《花好月圆》',
          }
      }, {
          'url': 'http://my.tv.sohu.com/us/232799889/78693464.shtml',
          'info_dict': {
              'id': '78693464',
              'ext': 'mp4',
              'title': '【爱范品】第31期：MWC见不到的奇葩手机',
          }
      }, {
          'note': 'Multipart video',
          'url': 'http://my.tv.sohu.com/pl/8384802/78910339.shtml',
          'info_dict': {
              'id': '78910339',
              'title': '【神探苍实战秘籍】第13期 战争之影 赫卡里姆',
          },
          'playlist': [{
              'info_dict': {
                  'id': '78910339_part1',
                  'ext': 'mp4',
                  'duration': 294,
                  'title': '【神探苍实战秘籍】第13期 战争之影 赫卡里姆',
              }
          }, {
              'info_dict': {
                  'id': '78910339_part2',
                  'ext': 'mp4',
                  'duration': 300,
                  'title': '【神探苍实战秘籍】第13期 战争之影 赫卡里姆',
              }
          }, {
              'info_dict': {
                  'id': '78910339_part3',
                  'ext': 'mp4',
                  'duration': 150,
                  'title': '【神探苍实战秘籍】第13期 战争之影 赫卡里姆',
              }
          }]
      }, {
          'note': 'Video with title containing dash',
          'url': 'http://my.tv.sohu.com/us/249884221/78932792.shtml',
          'info_dict': {
              'id': '78932792',
              'ext': 'mp4',
              'title': 'youtube-dl testing video',
          },
          'params': {
              'skip_download': True
          }
      }]
  
      def _real_extract(self, url):
  
          def _fetch_data(vid_id, mytv=False):
              if mytv:
                  base_data_url = 'http://my.tv.sohu.com/play/videonew.do?vid='
              else:
                  base_data_url = 'http://hot.vrs.sohu.com/vrs_flash.action?vid='
  
              return self._download_json(
                  base_data_url + vid_id, video_id,
                  'Downloading JSON data for %s' % vid_id,
                  headers=self.geo_verification_headers())
  
          mobj = self._match_valid_url(url)
          video_id = mobj.group('id')
          mytv = mobj.group('mytv') is not None
  
          webpage = self._download_webpage(url, video_id)
  
          title = re.sub(r' - 搜狐视频$', '', self._og_search_title(webpage))
  
          vid = self._html_search_regex(
              r'var vid ?= ?["\'](\d+)["\']',
              webpage, 'video path')
          vid_data = _fetch_data(vid, mytv)
          if vid_data['play'] != 1:
              if vid_data.get('status') == 12:
                  raise ExtractorError(
                      '%s said: There\'s something wrong in the video.' % self.IE_NAME,
                      expected=True)
              else:
                  self.raise_geo_restricted(
                      '%s said: The video is only licensed to users in Mainland China.' % self.IE_NAME)
  
          formats_json = {}
          for format_id in ('nor', 'high', 'super', 'ori', 'h2644k', 'h2654k'):
              vid_id = vid_data['data'].get('%sVid' % format_id)
              if not vid_id:
                  continue
              vid_id = compat_str(vid_id)
              formats_json[format_id] = vid_data if vid == vid_id else _fetch_data(vid_id, mytv)
  
          part_count = vid_data['data']['totalBlocks']
  
          playlist = []
          for i in range(part_count):
              formats = []
              for format_id, format_data in formats_json.items():
                  allot = format_data['allot']
  
                  data = format_data['data']
                  clips_url = data['clipsURL']
                  su = data['su']
  
                  video_url = 'newflv.sohu.ccgslb.net'
                  cdnId = None
                  retries = 0
  
                  while 'newflv.sohu.ccgslb.net' in video_url:
                      params = {
                          'prot': 9,
                          'file': clips_url[i],
                          'new': su[i],
                          'prod': 'flash',
                          'rb': 1,
                      }
  
                      if cdnId is not None:
                          params['idc'] = cdnId
  
                      download_note = 'Downloading %s video URL part %d of %d' % (
                          format_id, i + 1, part_count)
  
                      if retries > 0:
                          download_note += ' (retry #%d)' % retries
                      part_info = self._parse_json(self._download_webpage(
                          'http://%s/?%s' % (allot, compat_urllib_parse_urlencode(params)),
                          video_id, download_note), video_id)
  
                      video_url = part_info['url']
                      cdnId = part_info.get('nid')
  
                      retries += 1
                      if retries > 5:
                          raise ExtractorError('Failed to get video URL')
  
                  formats.append({
                      'url': video_url,
                      'format_id': format_id,
                      'filesize': int_or_none(
                          try_get(data, lambda x: x['clipsBytes'][i])),
                      'width': int_or_none(data.get('width')),
                      'height': int_or_none(data.get('height')),
                      'fps': int_or_none(data.get('fps')),
                  })
              self._sort_formats(formats)
  
              playlist.append({
                  'id': '%s_part%d' % (video_id, i + 1),
                  'title': title,
                  'duration': vid_data['data']['clipsDuration'][i],
                  'formats': formats,
              })
  
          if len(playlist) == 1:
              info = playlist[0]
              info['id'] = video_id
          else:
              info = {
                  '_type': 'multi_video',
                  'entries': playlist,
                  'id': video_id,
                  'title': title,
              }
  
          return info
  