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

   1 import re
   2 import json
   3
   4 from .common import InfoExtractor
   5 from ..utils import (
   6     clean_html,
   7     get_element_by_id,
   8 )
   9
  10
  11 class TechTVMITIE(InfoExtractor):
  12     IE_NAME = u'techtv.mit.edu'
  13     _VALID_URL = r'https?://techtv\.mit\.edu/(videos|embeds)/(?P<id>\d+)'
  14
  15     _TEST = {
  16         u'url': u'http://techtv.mit.edu/videos/25418-mit-dna-learning-center-set',
  17         u'file': u'25418.mp4',
  18         u'md5': u'1f8cb3e170d41fd74add04d3c9330e5f',
  19         u'info_dict': {
  20             u'title': u'MIT DNA Learning Center Set',
  21             u'description': u'md5:82313335e8a8a3f243351ba55bc1b474',
  22         },
  23     }
  24
  25     def _real_extract(self, url):
  26         mobj = re.match(self._VALID_URL, url)
  27         video_id = mobj.group('id')
  28         raw_page = self._download_webpage(
  29             'http://techtv.mit.edu/videos/%s' % video_id, video_id)
  30         clean_page = re.compile(u'<!--.*?-->', re.S).sub(u'', raw_page)
  31
  32         base_url = self._search_regex(r'ipadUrl: \'(.+?cloudfront.net/)',
  33             raw_page, u'base url')
  34         formats_json = self._search_regex(r'bitrates: (\[.+?\])', raw_page,
  35             u'video formats')
  36         formats = json.loads(formats_json)
  37         formats = sorted(formats, key=lambda f: f['bitrate'])
  38
  39         title = get_element_by_id('edit-title', clean_page)
  40         description = clean_html(get_element_by_id('edit-description', clean_page))
  41         thumbnail = self._search_regex(r'playlist:.*?url: \'(.+?)\'',
  42             raw_page, u'thumbnail', flags=re.DOTALL)
  43
  44         return {'id': video_id,
  45                 'title': title,
  46                 'url': base_url + formats[-1]['url'].replace('mp4:', ''),
  47                 'ext': 'mp4',
  48                 'description': description,
  49                 'thumbnail': thumbnail,
  50                 }
  51
  52
  53 class MITIE(TechTVMITIE):
  54     IE_NAME = u'video.mit.edu'
  55     _VALID_URL = r'https?://video\.mit\.edu/watch/(?P<title>[^/]+)'
  56
  57     _TEST = {
  58         u'url': u'http://video.mit.edu/watch/the-government-is-profiling-you-13222/',
  59         u'file': u'21783.mp4',
  60         u'md5': u'7db01d5ccc1895fc5010e9c9e13648da',
  61         u'info_dict': {
  62             u'title': u'The Government is Profiling You',
  63             u'description': u'md5:ad5795fe1e1623b73620dbfd47df9afd',
  64         },
  65     }
  66
  67     def _real_extract(self, url):
  68         mobj = re.match(self._VALID_URL, url)
  69         page_title = mobj.group('title')
  70         webpage = self._download_webpage(url, page_title)
  71         self.to_screen('%s: Extracting %s url' % (page_title, TechTVMITIE.IE_NAME))
  72         embed_url = self._search_regex(r'<iframe .*?src="(.+?)"', webpage,
  73             u'embed url')
  74         return self.url_result(embed_url, ie='TechTVMIT')