_ Git - youtube-dl/blob - youtube_dl/extractor/brightcove.py

   1 # encoding: utf-8
   2
   3 import re
   4 import json
   5 import xml.etree.ElementTree
   6
   7 from .common import InfoExtractor
   8 from ..utils import (
   9     compat_urllib_parse,
  10     find_xpath_attr,
  11     compat_urlparse,
  12
  13     ExtractorError,
  14 )
  15
  16 class BrightcoveIE(InfoExtractor):
  17     _VALID_URL = r'https?://.*brightcove\.com/(services|viewer).*\?(?P<query>.*)'
  18     _FEDERATED_URL_TEMPLATE = 'http://c.brightcove.com/services/viewer/htmlFederated?%s'
  19     _PLAYLIST_URL_TEMPLATE = 'http://c.brightcove.com/services/json/experience/runtime/?command=get_programming_for_experience&playerKey=%s'
  20
  21     _TESTS = [
  22         {
  23             u'url': u'http://www.8tv.cat/8aldia/videos/xavier-sala-i-martin-aquesta-tarda-a-8-al-dia/',
  24             u'file': u'2371591881001.mp4',
  25             u'md5': u'9e80619e0a94663f0bdc849b4566af19',
  26             u'note': u'Test Brightcove downloads and detection in GenericIE',
  27             u'info_dict': {
  28                 u'title': u'Xavier Sala i Martín: “Un banc que no presta és un banc zombi que no serveix per a res”',
  29                 u'uploader': u'8TV',
  30                 u'description': u'md5:a950cc4285c43e44d763d036710cd9cd',
  31             }
  32         },
  33         {
  34             u'url': u'http://medianetwork.oracle.com/video/player/1785452137001',
  35             u'file': u'1785452137001.flv',
  36             u'info_dict': {
  37                 u'title': u'JVMLS 2012: Arrays 2.0 - Opportunities and Challenges',
  38                 u'description': u'John Rose speaks at the JVM Language Summit, August 1, 2012.',
  39                 u'uploader': u'Oracle',
  40             },
  41         },
  42     ]
  43
  44     @classmethod
  45     def _build_brighcove_url(cls, object_str):
  46         """
  47         Build a Brightcove url from a xml string containing
  48         <object class="BrightcoveExperience">{params}</object>
  49         """
  50         object_doc = xml.etree.ElementTree.fromstring(object_str)
  51         assert u'BrightcoveExperience' in object_doc.attrib['class']
  52         params = {'flashID': object_doc.attrib['id'],
  53                   'playerID': find_xpath_attr(object_doc, './param', 'name', 'playerID').attrib['value'],
  54                   }
  55         playerKey = find_xpath_attr(object_doc, './param', 'name', 'playerKey')
  56         # Not all pages define this value
  57         if playerKey is not None:
  58             params['playerKey'] = playerKey.attrib['value']
  59         videoPlayer = find_xpath_attr(object_doc, './param', 'name', '@videoPlayer')
  60         if videoPlayer is not None:
  61             params['@videoPlayer'] = videoPlayer.attrib['value']
  62         data = compat_urllib_parse.urlencode(params)
  63         return cls._FEDERATED_URL_TEMPLATE % data
  64
  65     def _real_extract(self, url):
  66         mobj = re.match(self._VALID_URL, url)
  67         query_str = mobj.group('query')
  68         query = compat_urlparse.parse_qs(query_str)
  69
  70         videoPlayer = query.get('@videoPlayer')
  71         if videoPlayer:
  72             return self._get_video_info(videoPlayer[0], query_str)
  73         else:
  74             player_key = query['playerKey']
  75             return self._get_playlist_info(player_key[0])
  76
  77     def _get_video_info(self, video_id, query):
  78         request_url = self._FEDERATED_URL_TEMPLATE % query
  79         webpage = self._download_webpage(request_url, video_id)
  80
  81         self.report_extraction(video_id)
  82         info = self._search_regex(r'var experienceJSON = ({.*?});', webpage, 'json')
  83         info = json.loads(info)['data']
  84         video_info = info['programmedContent']['videoPlayer']['mediaDTO']
  85
  86         return self._extract_video_info(video_info)
  87
  88     def _get_playlist_info(self, player_key):
  89         playlist_info = self._download_webpage(self._PLAYLIST_URL_TEMPLATE % player_key,
  90                                                player_key, u'Downloading playlist information')
  91
  92         playlist_info = json.loads(playlist_info)['videoList']
  93         videos = [self._extract_video_info(video_info) for video_info in playlist_info['mediaCollectionDTO']['videoDTOs']]
  94
  95         return self.playlist_result(videos, playlist_id=playlist_info['id'],
  96                                     playlist_title=playlist_info['mediaCollectionDTO']['displayName'])
  97
  98     def _extract_video_info(self, video_info):
  99         info = {
 100             'id': video_info['id'],
 101             'title': video_info['displayName'],
 102             'description': video_info.get('shortDescription'),
 103             'thumbnail': video_info.get('videoStillURL') or video_info.get('thumbnailURL'),
 104             'uploader': video_info.get('publisherName'),
 105         }
 106
 107         renditions = video_info.get('renditions')
 108         if renditions:
 109             renditions = sorted(renditions, key=lambda r: r['size'])
 110             best_format = renditions[-1]
 111             info.update({
 112                 'url': best_format['defaultURL'],
 113                 'ext': 'mp4',
 114             })
 115         elif video_info.get('FLVFullLengthURL') is not None:
 116             info.update({
 117                 'url': video_info['FLVFullLengthURL'],
 118                 'ext': 'flv',
 119             })
 120         else:
 121             raise ExtractorError(u'Unable to extract video url for %s' % info['id'])
 122         return info