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

   1 # coding: utf-8
   2 from __future__ import unicode_literals
   3
   4 import re
   5 import json
   6
   7 from .common import InfoExtractor
   8 from ..compat import (
   9     compat_str,
  10     compat_urlparse,
  11 )
  12 from ..utils import (
  13     ExtractorError,
  14     float_or_none,
  15     mimetype2ext,
  16     unescapeHTML,
  17     unsmuggle_url,
  18     url_or_none,
  19     urljoin,
  20 )
  21
  22
  23 class MediasiteIE(InfoExtractor):
  24     _VALID_URL = r'(?xi)https?://[^/]+/Mediasite/Play/(?P<id>[0-9a-f]{32,34})(?P<query>\?[^#]+|)'
  25     _TESTS = [
  26         {
  27             'url': 'https://hitsmediaweb.h-its.org/mediasite/Play/2db6c271681e4f199af3c60d1f82869b1d',
  28             'info_dict': {
  29                 'id': '2db6c271681e4f199af3c60d1f82869b1d',
  30                 'ext': 'mp4',
  31                 'title': 'Lecture: Tuesday, September 20, 2016 - Sir Andrew Wiles',
  32                 'description': 'Sir Andrew Wiles: “Equations in arithmetic”\\n\\nI will describe some of the interactions between modern number theory and the problem of solving equations in rational numbers or integers\\u0027.',
  33                 'timestamp': 1474268400.0,
  34                 'upload_date': '20160919',
  35             },
  36         },
  37         {
  38             'url': 'http://mediasite.uib.no/Mediasite/Play/90bb363295d945d6b548c867d01181361d?catalog=a452b7df-9ae1-46b7-a3ba-aceeb285f3eb',
  39             'info_dict': {
  40                 'id': '90bb363295d945d6b548c867d01181361d',
  41                 'ext': 'mp4',
  42                 'upload_date': '20150429',
  43                 'title': '5) IT-forum 2015-Dag 1  - Dungbeetle -  How and why Rain created a tiny bug tracker for Unity',
  44                 'timestamp': 1430311380.0,
  45             },
  46         },
  47         {
  48             'url': 'https://collegerama.tudelft.nl/Mediasite/Play/585a43626e544bdd97aeb71a0ec907a01d',
  49             'md5': '481fda1c11f67588c0d9d8fbdced4e39',
  50             'info_dict': {
  51                 'id': '585a43626e544bdd97aeb71a0ec907a01d',
  52                 'ext': 'mp4',
  53                 'title': 'Een nieuwe wereld: waarden, bewustzijn en techniek van de mensheid 2.0.',
  54                 'description': '',
  55                 'thumbnail': r're:^https?://.*\.jpg(?:\?.*)?$',
  56                 'duration': 7713.088,
  57                 'timestamp': 1413309600,
  58                 'upload_date': '20141014',
  59             },
  60         },
  61         {
  62             'url': 'https://collegerama.tudelft.nl/Mediasite/Play/86a9ea9f53e149079fbdb4202b521ed21d?catalog=fd32fd35-6c99-466c-89d4-cd3c431bc8a4',
  63             'md5': 'ef1fdded95bdf19b12c5999949419c92',
  64             'info_dict': {
  65                 'id': '86a9ea9f53e149079fbdb4202b521ed21d',
  66                 'ext': 'wmv',
  67                 'title': '64ste Vakantiecursus: Afvalwater',
  68                 'description': 'md5:7fd774865cc69d972f542b157c328305',
  69                 'thumbnail': r're:^https?://.*\.jpg(?:\?.*?)?$',
  70                 'duration': 10853,
  71                 'timestamp': 1326446400,
  72                 'upload_date': '20120113',
  73             },
  74         },
  75         {
  76             'url': 'http://digitalops.sandia.gov/Mediasite/Play/24aace4429fc450fb5b38cdbf424a66e1d',
  77             'md5': '9422edc9b9a60151727e4b6d8bef393d',
  78             'info_dict': {
  79                 'id': '24aace4429fc450fb5b38cdbf424a66e1d',
  80                 'ext': 'mp4',
  81                 'title': 'Xyce Software Training - Section 1',
  82                 'description': r're:(?s)SAND Number: SAND 2013-7800.{200,}',
  83                 'upload_date': '20120409',
  84                 'timestamp': 1333983600,
  85                 'duration': 7794,
  86             }
  87         }
  88     ]
  89
  90     # look in Mediasite.Core.js (Mediasite.ContentStreamType[*])
  91     _STREAM_TYPES = {
  92         0: 'video1',  # the main video
  93         2: 'slide',
  94         3: 'presentation',
  95         4: 'video2',  # screencast?
  96         5: 'video3',
  97     }
  98
  99     @staticmethod
 100     def _extract_urls(webpage):
 101         return [
 102             unescapeHTML(mobj.group('url'))
 103             for mobj in re.finditer(
 104                 r'(?xi)<iframe\b[^>]+\bsrc=(["\'])(?P<url>(?:(?:https?:)?//[^/]+)?/Mediasite/Play/[0-9a-f]{32,34}(?:\?.*?)?)\1',
 105                 webpage)]
 106
 107     def _real_extract(self, url):
 108         url, data = unsmuggle_url(url, {})
 109         mobj = re.match(self._VALID_URL, url)
 110         resource_id = mobj.group('id')
 111         query = mobj.group('query')
 112
 113         webpage, urlh = self._download_webpage_handle(url, resource_id)  # XXX: add UrlReferrer?
 114         redirect_url = compat_str(urlh.geturl())
 115
 116         # XXX: might have also extracted UrlReferrer and QueryString from the html
 117         service_path = compat_urlparse.urljoin(redirect_url, self._html_search_regex(
 118             r'<div[^>]+\bid=["\']ServicePath[^>]+>(.+?)</div>', webpage, resource_id,
 119             default='/Mediasite/PlayerService/PlayerService.svc/json'))
 120
 121         player_options = self._download_json(
 122             '%s/GetPlayerOptions' % service_path, resource_id,
 123             headers={
 124                 'Content-type': 'application/json; charset=utf-8',
 125                 'X-Requested-With': 'XMLHttpRequest',
 126             },
 127             data=json.dumps({
 128                 'getPlayerOptionsRequest': {
 129                     'ResourceId': resource_id,
 130                     'QueryString': query,
 131                     'UrlReferrer': data.get('UrlReferrer', ''),
 132                     'UseScreenReader': False,
 133                 }
 134             }).encode('utf-8'))['d']
 135
 136         presentation = player_options['Presentation']
 137         title = presentation['Title']
 138
 139         if presentation is None:
 140             raise ExtractorError(
 141                 'Mediasite says: %s' % player_options['PlayerPresentationStatusMessage'],
 142                 expected=True)
 143
 144         thumbnails = []
 145         formats = []
 146         for snum, Stream in enumerate(presentation['Streams']):
 147             stream_type = Stream.get('StreamType')
 148             if stream_type is None:
 149                 continue
 150
 151             video_urls = Stream.get('VideoUrls')
 152             if not isinstance(video_urls, list):
 153                 video_urls = []
 154
 155             stream_id = self._STREAM_TYPES.get(
 156                 stream_type, 'type%u' % stream_type)
 157
 158             stream_formats = []
 159             for unum, VideoUrl in enumerate(video_urls):
 160                 video_url = url_or_none(VideoUrl.get('Location'))
 161                 if not video_url:
 162                     continue
 163                 # XXX: if Stream.get('CanChangeScheme', False), switch scheme to HTTP/HTTPS
 164
 165                 media_type = VideoUrl.get('MediaType')
 166                 if media_type == 'SS':
 167                     stream_formats.extend(self._extract_ism_formats(
 168                         video_url, resource_id,
 169                         ism_id='%s-%u.%u' % (stream_id, snum, unum),
 170                         fatal=False))
 171                 elif media_type == 'Dash':
 172                     stream_formats.extend(self._extract_mpd_formats(
 173                         video_url, resource_id,
 174                         mpd_id='%s-%u.%u' % (stream_id, snum, unum),
 175                         fatal=False))
 176                 else:
 177                     stream_formats.append({
 178                         'format_id': '%s-%u.%u' % (stream_id, snum, unum),
 179                         'url': video_url,
 180                         'ext': mimetype2ext(VideoUrl.get('MimeType')),
 181                     })
 182
 183             # TODO: if Stream['HasSlideContent']:
 184             # synthesise an MJPEG video stream '%s-%u.slides' % (stream_type, snum)
 185             # from Stream['Slides']
 186             # this will require writing a custom downloader...
 187
 188             # disprefer 'secondary' streams
 189             if stream_type != 0:
 190                 for fmt in stream_formats:
 191                     fmt['preference'] = -1
 192
 193             thumbnail_url = Stream.get('ThumbnailUrl')
 194             if thumbnail_url:
 195                 thumbnails.append({
 196                     'id': '%s-%u' % (stream_id, snum),
 197                     'url': urljoin(redirect_url, thumbnail_url),
 198                     'preference': -1 if stream_type != 0 else 0,
 199                 })
 200             formats.extend(stream_formats)
 201
 202         self._sort_formats(formats)
 203
 204         # XXX: Presentation['Presenters']
 205         # XXX: Presentation['Transcript']
 206
 207         return {
 208             'id': resource_id,
 209             'title': title,
 210             'description': presentation.get('Description'),
 211             'duration': float_or_none(presentation.get('Duration'), 1000),
 212             'timestamp': float_or_none(presentation.get('UnixTime'), 1000),
 213             'formats': formats,
 214             'thumbnails': thumbnails,
 215         }