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

   1 from __future__ import unicode_literals
   2
   3 import re
   4
   5 from .common import InfoExtractor
   6 from ..compat import (
   7     compat_HTTPError,
   8     compat_str,
   9     compat_urlparse,
  10 )
  11 from ..utils import (
  12     ExtractorError,
  13     js_to_json,
  14     parse_duration,
  15     parse_iso8601,
  16 )
  17
  18
  19 class ViideaIE(InfoExtractor):
  20     _VALID_URL = r'''(?x)https?://(?:www\.)?(?:
  21             videolectures\.net|
  22             flexilearn\.viidea\.net|
  23             presentations\.ocwconsortium\.org|
  24             video\.travel-zoom\.si|
  25             video\.pomp-forum\.si|
  26             tv\.nil\.si|
  27             video\.hekovnik.com|
  28             video\.szko\.si|
  29             kpk\.viidea\.com|
  30             inside\.viidea\.net|
  31             video\.kiberpipa\.org|
  32             bvvideo\.si|
  33             kongres\.viidea\.net|
  34             edemokracija\.viidea\.com
  35         )(?:/lecture)?/(?P<id>[^/]+)(?:/video/(?P<part>\d+))?/*(?:[#?].*)?$'''
  36
  37     _TESTS = [{
  38         'url': 'http://videolectures.net/promogram_igor_mekjavic_eng/',
  39         'info_dict': {
  40             'id': '20171',
  41             'display_id': 'promogram_igor_mekjavic_eng',
  42             'ext': 'mp4',
  43             'title': 'Automatics, robotics and biocybernetics',
  44             'description': 'md5:815fc1deb6b3a2bff99de2d5325be482',
  45             'thumbnail': r're:http://.*\.jpg',
  46             'timestamp': 1372349289,
  47             'upload_date': '20130627',
  48             'duration': 565,
  49         },
  50         'params': {
  51             # m3u8 download
  52             'skip_download': True,
  53         },
  54     }, {
  55         # video with invalid direct format links (HTTP 403)
  56         'url': 'http://videolectures.net/russir2010_filippova_nlp/',
  57         'info_dict': {
  58             'id': '14891',
  59             'display_id': 'russir2010_filippova_nlp',
  60             'ext': 'flv',
  61             'title': 'NLP at Google',
  62             'description': 'md5:fc7a6d9bf0302d7cc0e53f7ca23747b3',
  63             'thumbnail': r're:http://.*\.jpg',
  64             'timestamp': 1284375600,
  65             'upload_date': '20100913',
  66             'duration': 5352,
  67         },
  68         'params': {
  69             # rtmp download
  70             'skip_download': True,
  71         },
  72     }, {
  73         # event playlist
  74         'url': 'http://videolectures.net/deeplearning2015_montreal/',
  75         'info_dict': {
  76             'id': '23181',
  77             'title': 'Deep Learning Summer School, Montreal 2015',
  78             'description': 'md5:0533a85e4bd918df52a01f0e1ebe87b7',
  79             'thumbnail': r're:http://.*\.jpg',
  80             'timestamp': 1438560000,
  81         },
  82         'playlist_count': 30,
  83     }, {
  84         # multi part lecture
  85         'url': 'http://videolectures.net/mlss09uk_bishop_ibi/',
  86         'info_dict': {
  87             'id': '9737',
  88             'display_id': 'mlss09uk_bishop_ibi',
  89             'title': 'Introduction To Bayesian Inference',
  90             'thumbnail': r're:http://.*\.jpg',
  91             'timestamp': 1251622800,
  92         },
  93         'playlist': [{
  94             'info_dict': {
  95                 'id': '9737_part1',
  96                 'display_id': 'mlss09uk_bishop_ibi_part1',
  97                 'ext': 'wmv',
  98                 'title': 'Introduction To Bayesian Inference (Part 1)',
  99                 'thumbnail': r're:http://.*\.jpg',
 100                 'duration': 4622,
 101                 'timestamp': 1251622800,
 102                 'upload_date': '20090830',
 103             },
 104         }, {
 105             'info_dict': {
 106                 'id': '9737_part2',
 107                 'display_id': 'mlss09uk_bishop_ibi_part2',
 108                 'ext': 'wmv',
 109                 'title': 'Introduction To Bayesian Inference (Part 2)',
 110                 'thumbnail': r're:http://.*\.jpg',
 111                 'duration': 5641,
 112                 'timestamp': 1251622800,
 113                 'upload_date': '20090830',
 114             },
 115         }],
 116         'playlist_count': 2,
 117     }]
 118
 119     def _real_extract(self, url):
 120         lecture_slug, explicit_part_id = re.match(self._VALID_URL, url).groups()
 121
 122         webpage = self._download_webpage(url, lecture_slug)
 123
 124         cfg = self._parse_json(self._search_regex(
 125             [r'cfg\s*:\s*({.+?})\s*,\s*[\da-zA-Z_]+\s*:\s*\(?\s*function',
 126              r'cfg\s*:\s*({[^}]+})'],
 127             webpage, 'cfg'), lecture_slug, js_to_json)
 128
 129         lecture_id = compat_str(cfg['obj_id'])
 130
 131         base_url = self._proto_relative_url(cfg['livepipe'], 'http:')
 132
 133         try:
 134             lecture_data = self._download_json(
 135                 '%s/site/api/lecture/%s?format=json' % (base_url, lecture_id),
 136                 lecture_id)['lecture'][0]
 137         except ExtractorError as e:
 138             if isinstance(e.cause, compat_HTTPError) and e.cause.code == 403:
 139                 msg = self._parse_json(
 140                     e.cause.read().decode('utf-8'), lecture_id)
 141                 raise ExtractorError(msg['detail'], expected=True)
 142             raise
 143
 144         lecture_info = {
 145             'id': lecture_id,
 146             'display_id': lecture_slug,
 147             'title': lecture_data['title'],
 148             'timestamp': parse_iso8601(lecture_data.get('time')),
 149             'description': lecture_data.get('description_wiki'),
 150             'thumbnail': lecture_data.get('thumb'),
 151         }
 152
 153         playlist_entries = []
 154         lecture_type = lecture_data.get('type')
 155         parts = [compat_str(video) for video in cfg.get('videos', [])]
 156         if parts:
 157             multipart = len(parts) > 1
 158
 159             def extract_part(part_id):
 160                 smil_url = '%s/%s/video/%s/smil.xml' % (base_url, lecture_slug, part_id)
 161                 smil = self._download_smil(smil_url, lecture_id)
 162                 info = self._parse_smil(smil, smil_url, lecture_id)
 163                 self._sort_formats(info['formats'])
 164                 info['id'] = lecture_id if not multipart else '%s_part%s' % (lecture_id, part_id)
 165                 info['display_id'] = lecture_slug if not multipart else '%s_part%s' % (lecture_slug, part_id)
 166                 if multipart:
 167                     info['title'] += ' (Part %s)' % part_id
 168                 switch = smil.find('.//switch')
 169                 if switch is not None:
 170                     info['duration'] = parse_duration(switch.attrib.get('dur'))
 171                 item_info = lecture_info.copy()
 172                 item_info.update(info)
 173                 return item_info
 174
 175             if explicit_part_id or not multipart:
 176                 result = extract_part(explicit_part_id or parts[0])
 177             else:
 178                 result = {
 179                     '_type': 'multi_video',
 180                     'entries': [extract_part(part) for part in parts],
 181                 }
 182                 result.update(lecture_info)
 183
 184             # Immediately return explicitly requested part or non event item
 185             if explicit_part_id or lecture_type != 'evt':
 186                 return result
 187
 188             playlist_entries.append(result)
 189
 190         # It's probably a playlist
 191         if not parts or lecture_type == 'evt':
 192             playlist_webpage = self._download_webpage(
 193                 '%s/site/ajax/drilldown/?id=%s' % (base_url, lecture_id), lecture_id)
 194             entries = [
 195                 self.url_result(compat_urlparse.urljoin(url, video_url), 'Viidea')
 196                 for _, video_url in re.findall(
 197                     r'<a[^>]+href=(["\'])(.+?)\1[^>]+id=["\']lec=\d+', playlist_webpage)]
 198             playlist_entries.extend(entries)
 199
 200         playlist = self.playlist_result(playlist_entries, lecture_id)
 201         playlist.update(lecture_info)
 202         return playlist