]> gitweb @ CieloNegro.org - youtube-dl.git/blob - youtube_dl/extractor/khanacademy.py
Einthusan Add new extractor
[youtube-dl.git] / youtube_dl / extractor / khanacademy.py
1 from __future__ import unicode_literals
2
3 import re
4
5 from .common import InfoExtractor
6 from ..utils import (
7     unified_strdate,
8 )
9
10
11 class KhanAcademyIE(InfoExtractor):
12     _VALID_URL = r'^https?://(?:www\.)?khanacademy\.org/(?P<key>[^/]+)/(?:[^/]+/){,2}(?P<id>[^?#/]+)(?:$|[?#])'
13     IE_NAME = 'KhanAcademy'
14
15     _TEST = {
16         'url': 'http://www.khanacademy.org/video/one-time-pad',
17         'file': 'one-time-pad.mp4',
18         'md5': '7021db7f2d47d4fff89b13177cb1e8f4',
19         'info_dict': {
20             'title': 'The one-time pad',
21             'description': 'The perfect cipher',
22             'duration': 176,
23             'uploader': 'Brit Cruise',
24             'upload_date': '20120411',
25         }
26     }
27
28     def _real_extract(self, url):
29         m = re.match(self._VALID_URL, url)
30         video_id = m.group('id')
31
32         if m.group('key') == 'video':
33             data = self._download_json(
34                 'http://api.khanacademy.org/api/v1/videos/' + video_id,
35                 video_id, 'Downloading video info')
36
37             upload_date = unified_strdate(data['date_added'])
38             uploader = ', '.join(data['author_names'])
39             return {
40                 '_type': 'url_transparent',
41                 'url': data['url'],
42                 'id': video_id,
43                 'title': data['title'],
44                 'thumbnail': data['image_url'],
45                 'duration': data['duration'],
46                 'description': data['description'],
47                 'uploader': uploader,
48                 'upload_date': upload_date,
49             }
50         else:
51             # topic
52             data = self._download_json(
53                 'http://api.khanacademy.org/api/v1/topic/' + video_id,
54                 video_id, 'Downloading topic info')
55
56             entries = [
57                 {
58                     '_type': 'url',
59                     'url': c['url'],
60                     'id': c['id'],
61                     'title': c['title'],
62                 }
63                 for c in data['children'] if c['kind'] in ('Video', 'Topic')]
64
65             return {
66                 '_type': 'playlist',
67                 'id': video_id,
68                 'title': data['title'],
69                 'description': data['description'],
70                 'entries': entries,
71             }