]> Raphaƫl G. Git Repositories - youtubedl/blob - youtube_dl/extractor/khanacademy.py
Prepare for upload.
[youtubedl] / 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|api)\.)?khanacademy\.org/(?P<key>[^/]+)/(?:[^/]+/){,2}(?P<id>[^?#/]+)(?:$|[?#])'
13 IE_NAME = 'KhanAcademy'
14
15 _TESTS = [{
16 'url': 'http://www.khanacademy.org/video/one-time-pad',
17 'md5': '7021db7f2d47d4fff89b13177cb1e8f4',
18 'info_dict': {
19 'id': 'one-time-pad',
20 'ext': 'mp4',
21 'title': 'The one-time pad',
22 'description': 'The perfect cipher',
23 'duration': 176,
24 'uploader': 'Brit Cruise',
25 'upload_date': '20120411',
26 }
27 }, {
28 'url': 'https://www.khanacademy.org/math/applied-math/cryptography',
29 'info_dict': {
30 'id': 'cryptography',
31 'title': 'Journey into cryptography',
32 'description': 'How have humans protected their secret messages through history? What has changed today?',
33 },
34 'playlist_mincount': 3,
35 }]
36
37 def _real_extract(self, url):
38 m = re.match(self._VALID_URL, url)
39 video_id = m.group('id')
40
41 if m.group('key') == 'video':
42 data = self._download_json(
43 'http://api.khanacademy.org/api/v1/videos/' + video_id,
44 video_id, 'Downloading video info')
45
46 upload_date = unified_strdate(data['date_added'])
47 uploader = ', '.join(data['author_names'])
48 return {
49 '_type': 'url_transparent',
50 'url': data['url'],
51 'id': video_id,
52 'title': data['title'],
53 'thumbnail': data['image_url'],
54 'duration': data['duration'],
55 'description': data['description'],
56 'uploader': uploader,
57 'upload_date': upload_date,
58 }
59 else:
60 # topic
61 data = self._download_json(
62 'http://api.khanacademy.org/api/v1/topic/' + video_id,
63 video_id, 'Downloading topic info')
64
65 entries = [
66 {
67 '_type': 'url',
68 'url': c['url'],
69 'id': c['id'],
70 'title': c['title'],
71 }
72 for c in data['children'] if c['kind'] in ('Video', 'Topic')]
73
74 return {
75 '_type': 'playlist',
76 'id': video_id,
77 'title': data['title'],
78 'description': data['description'],
79 'entries': entries,
80 }