Raphaël G. Git Repositories - youtubedl/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             # From http://www.8tv.cat/8aldia/videos/xavier-sala-i-martin-aquesta-tarda-a-8-al-dia/
  24             u'url': u'http://c.brightcove.com/services/viewer/htmlFederated?playerID=1654948606001&flashID=myExperience&%40videoPlayer=2371591881001',
  25             u'file': u'2371591881001.mp4',
  26             u'md5': u'9e80619e0a94663f0bdc849b4566af19',
  27             u'note': u'Test Brightcove downloads and detection in GenericIE',
  28             u'info_dict': {
  29                 u'title': u'Xavier Sala i Martín: “Un banc que no presta és un banc zombi que no serveix per a res”',
  30                 u'uploader': u'8TV',
  31                 u'description': u'md5:a950cc4285c43e44d763d036710cd9cd',
  32             }
  33         },
  34         {
  35             # From http://medianetwork.oracle.com/video/player/1785452137001
  36             u'url': u'http://c.brightcove.com/services/viewer/htmlFederated?playerID=1217746023001&flashID=myPlayer&%40videoPlayer=1785452137001',
  37             u'file': u'1785452137001.flv',
  38             u'info_dict': {
  39                 u'title': u'JVMLS 2012: Arrays 2.0 - Opportunities and Challenges',
  40                 u'description': u'John Rose speaks at the JVM Language Summit, August 1, 2012.',
  41                 u'uploader': u'Oracle',
  42             },
  43         },
  44     ]
  45
  46     @classmethod
  47     def _build_brighcove_url(cls, object_str):
  48         """
  49         Build a Brightcove url from a xml string containing
  50         <object class="BrightcoveExperience">{params}</object>
  51         """
  52
  53         # Fix up some stupid HTML, see https://github.com/rg3/youtube-dl/issues/1553
  54         object_str = re.sub(r'(<param name="[^"]+" value="[^"]+")>',
  55                             lambda m: m.group(1) + '/>', object_str)
  56         # Fix up some stupid XML, see https://github.com/rg3/youtube-dl/issues/1608
  57         object_str = object_str.replace(u'<--', u'<!--')
  58
  59         object_doc = xml.etree.ElementTree.fromstring(object_str)
  60         assert u'BrightcoveExperience' in object_doc.attrib['class']
  61         params = {'flashID': object_doc.attrib['id'],
  62                   'playerID': find_xpath_attr(object_doc, './param', 'name', 'playerID').attrib['value'],
  63                   }
  64         playerKey = find_xpath_attr(object_doc, './param', 'name', 'playerKey')
  65         # Not all pages define this value
  66         if playerKey is not None:
  67             params['playerKey'] = playerKey.attrib['value']
  68         videoPlayer = find_xpath_attr(object_doc, './param', 'name', '@videoPlayer')
  69         if videoPlayer is not None:
  70             params['@videoPlayer'] = videoPlayer.attrib['value']
  71         data = compat_urllib_parse.urlencode(params)
  72         return cls._FEDERATED_URL_TEMPLATE % data
  73
  74     def _real_extract(self, url):
  75         mobj = re.match(self._VALID_URL, url)
  76         query_str = mobj.group('query')
  77         query = compat_urlparse.parse_qs(query_str)
  78
  79         videoPlayer = query.get('@videoPlayer')
  80         if videoPlayer:
  81             return self._get_video_info(videoPlayer[0], query_str)
  82         else:
  83             player_key = query['playerKey']
  84             return self._get_playlist_info(player_key[0])
  85
  86     def _get_video_info(self, video_id, query):
  87         request_url = self._FEDERATED_URL_TEMPLATE % query
  88         webpage = self._download_webpage(request_url, video_id)
  89
  90         self.report_extraction(video_id)
  91         info = self._search_regex(r'var experienceJSON = ({.*?});', webpage, 'json')
  92         info = json.loads(info)['data']
  93         video_info = info['programmedContent']['videoPlayer']['mediaDTO']
  94
  95         return self._extract_video_info(video_info)
  96
  97     def _get_playlist_info(self, player_key):
  98         playlist_info = self._download_webpage(self._PLAYLIST_URL_TEMPLATE % player_key,
  99                                                player_key, u'Downloading playlist information')
 100
 101         json_data = json.loads(playlist_info)
 102         if 'videoList' not in json_data:
 103             raise ExtractorError(u'Empty playlist')
 104         playlist_info = json_data['videoList']
 105         videos = [self._extract_video_info(video_info) for video_info in playlist_info['mediaCollectionDTO']['videoDTOs']]
 106
 107         return self.playlist_result(videos, playlist_id=playlist_info['id'],
 108                                     playlist_title=playlist_info['mediaCollectionDTO']['displayName'])
 109
 110     def _extract_video_info(self, video_info):
 111         info = {
 112             'id': video_info['id'],
 113             'title': video_info['displayName'],
 114             'description': video_info.get('shortDescription'),
 115             'thumbnail': video_info.get('videoStillURL') or video_info.get('thumbnailURL'),
 116             'uploader': video_info.get('publisherName'),
 117         }
 118
 119         renditions = video_info.get('renditions')
 120         if renditions:
 121             renditions = sorted(renditions, key=lambda r: r['size'])
 122             best_format = renditions[-1]
 123             info.update({
 124                 'url': best_format['defaultURL'],
 125                 'ext': 'mp4',
 126             })
 127         elif video_info.get('FLVFullLengthURL') is not None:
 128             info.update({
 129                 'url': video_info['FLVFullLengthURL'],
 130                 'ext': 'flv',
 131             })
 132         else:
 133             raise ExtractorError(u'Unable to extract video url for %s' % info['id'])
 134         return info