youtube_dl/extractor/pbs.py

   1 from __future__ import unicode_literals
   2
   3 import re
   4
   5 from .common import InfoExtractor
   6 from ..utils import (
   7     US_RATINGS,
   8 )
   9
  10
  11 class PBSIE(InfoExtractor):
  12     _VALID_URL = r'''(?x)https?://
  13         (?:
  14             # Direct video URL
  15             video\.pbs\.org/(?:viralplayer|video)/(?P<id>[0-9]+)/? |
  16             # Article with embedded player
  17            (?:www\.)?pbs\.org/(?:[^/]+/){2,5}(?P<presumptive_id>[^/]+)/?(?:$|[?\#]) |
  18            # Player
  19            video\.pbs\.org/(?:widget/)?partnerplayer/(?P<player_id>[^/]+)/
  20         )
  21     '''
  22
  23     _TESTS = [
  24         {
  25             'url': 'http://www.pbs.org/tpt/constitution-usa-peter-sagal/watch/a-more-perfect-union/',
  26             'md5': 'ce1888486f0908d555a8093cac9a7362',
  27             'info_dict': {
  28                 'id': '2365006249',
  29                 'ext': 'mp4',
  30                 'title': 'A More Perfect Union',
  31                 'description': 'md5:ba0c207295339c8d6eced00b7c363c6a',
  32                 'duration': 3190,
  33             },
  34         },
  35         {
  36             'url': 'http://www.pbs.org/wgbh/pages/frontline/losing-iraq/',
  37             'md5': '143c98aa54a346738a3d78f54c925321',
  38             'info_dict': {
  39                 'id': '2365297690',
  40                 'ext': 'mp4',
  41                 'title': 'Losing Iraq',
  42                 'description': 'md5:f5bfbefadf421e8bb8647602011caf8e',
  43                 'duration': 5050,
  44             },
  45         },
  46         {
  47             'url': 'http://www.pbs.org/newshour/bb/education-jan-june12-cyberschools_02-23/',
  48             'md5': 'b19856d7f5351b17a5ab1dc6a64be633',
  49             'info_dict': {
  50                 'id': '2201174722',
  51                 'ext': 'mp4',
  52                 'title': 'Cyber Schools Gain Popularity, but Quality Questions Persist',
  53                 'description': 'md5:5871c15cba347c1b3d28ac47a73c7c28',
  54                 'duration': 801,
  55             },
  56         },
  57     ]
  58
  59     def _extract_ids(self, url):
  60         mobj = re.match(self._VALID_URL, url)
  61
  62         presumptive_id = mobj.group('presumptive_id')
  63         display_id = presumptive_id
  64         if presumptive_id:
  65             webpage = self._download_webpage(url, display_id)
  66
  67             MEDIA_ID_REGEXES = [
  68                 r"div\s*:\s*'videoembed'\s*,\s*mediaid\s*:\s*'(\d+)'",  # frontline video embed
  69                 r'class="coveplayerid">([^<]+)<',                       # coveplayer
  70             ]
  71
  72             media_id = self._search_regex(
  73                 MEDIA_ID_REGEXES, webpage, 'media ID', fatal=False, default=None)
  74             if media_id:
  75                 return media_id, presumptive_id
  76
  77             url = self._search_regex(
  78                 r'<iframe\s+id=["\']partnerPlayer["\'].*?\s+src=["\'](.*?)["\']>',
  79                 webpage, 'player URL')
  80             mobj = re.match(self._VALID_URL, url)
  81
  82         player_id = mobj.group('player_id')
  83         if not display_id:
  84             display_id = player_id
  85         if player_id:
  86             player_page = self._download_webpage(
  87                 url, display_id, note='Downloading player page',
  88                 errnote='Could not download player page')
  89             video_id = self._search_regex(
  90                 r'<div\s+id="video_([0-9]+)"', player_page, 'video ID')
  91         else:
  92             video_id = mobj.group('id')
  93             display_id = video_id
  94
  95         return video_id, display_id
  96
  97     def _real_extract(self, url):
  98         video_id, display_id = self._extract_ids(url)
  99
 100         info_url = 'http://video.pbs.org/videoInfo/%s?format=json' % video_id
 101         info = self._download_json(info_url, display_id)
 102
 103         rating_str = info.get('rating')
 104         if rating_str is not None:
 105             rating_str = rating_str.rpartition('-')[2]
 106         age_limit = US_RATINGS.get(rating_str)
 107
 108         return {
 109             'id': video_id,
 110             'title': info['title'],
 111             'url': info['alternate_encoding']['url'],
 112             'ext': 'mp4',
 113             'description': info['program'].get('description'),
 114             'thumbnail': info.get('image_url'),
 115             'duration': info.get('duration'),
 116             'age_limit': age_limit,
 117         }