[khanacademy] fix extraction(closes #2887)(closes #26803)

pull/27728/head
Remita Amine 3 years ago
parent 2c337f4e85
commit 61e669acff

@ -526,7 +526,10 @@ from .karaoketv import KaraoketvIE
from .karrierevideos import KarriereVideosIE
from .keezmovies import KeezMoviesIE
from .ketnet import KetnetIE
from .khanacademy import KhanAcademyIE
from .khanacademy import (
KhanAcademyIE,
KhanAcademyUnitIE,
)
from .kickstarter import KickStarterIE
from .kinja import KinjaEmbedIE
from .kinopoisk import KinoPoiskIE

@ -1,82 +1,107 @@
from __future__ import unicode_literals
import re
import json
from .common import InfoExtractor
from ..utils import (
unified_strdate,
int_or_none,
parse_iso8601,
try_get,
)
class KhanAcademyIE(InfoExtractor):
_VALID_URL = r'^https?://(?:(?:www|api)\.)?khanacademy\.org/(?P<key>[^/]+)/(?:[^/]+/){,2}(?P<id>[^?#/]+)(?:$|[?#])'
IE_NAME = 'KhanAcademy'
class KhanAcademyBaseIE(InfoExtractor):
_VALID_URL_TEMPL = r'https?://(?:www\.)?khanacademy\.org/(?P<id>(?:[^/]+/){%s}%s[^?#/&]+)'
_TESTS = [{
'url': 'http://www.khanacademy.org/video/one-time-pad',
'md5': '7b391cce85e758fb94f763ddc1bbb979',
def _parse_video(self, video):
return {
'_type': 'url_transparent',
'url': video['youtubeId'],
'id': video.get('slug'),
'title': video.get('title'),
'thumbnail': video.get('imageUrl') or video.get('thumbnailUrl'),
'duration': int_or_none(video.get('duration')),
'description': video.get('description'),
'ie_key': 'Youtube',
}
def _real_extract(self, url):
display_id = self._match_id(url)
component_props = self._parse_json(self._download_json(
'https://www.khanacademy.org/api/internal/graphql',
display_id, query={
'hash': 1604303425,
'variables': json.dumps({
'path': display_id,
'queryParams': '',
}),
})['data']['contentJson'], display_id)['componentProps']
return self._parse_component_props(component_props)
class KhanAcademyIE(KhanAcademyBaseIE):
IE_NAME = 'khanacademy'
_VALID_URL = KhanAcademyBaseIE._VALID_URL_TEMPL % ('4', 'v/')
_TEST = {
'url': 'https://www.khanacademy.org/computing/computer-science/cryptography/crypt/v/one-time-pad',
'md5': '9c84b7b06f9ebb80d22a5c8dedefb9a0',
'info_dict': {
'id': 'one-time-pad',
'ext': 'webm',
'id': 'FlIG3TvQCBQ',
'ext': 'mp4',
'title': 'The one-time pad',
'description': 'The perfect cipher',
'duration': 176,
'uploader': 'Brit Cruise',
'uploader_id': 'khanacademy',
'upload_date': '20120411',
'timestamp': 1334170113,
'license': 'cc-by-nc-sa',
},
'add_ie': ['Youtube'],
}, {
'url': 'https://www.khanacademy.org/math/applied-math/cryptography',
}
def _parse_component_props(self, component_props):
video = component_props['tutorialPageData']['contentModel']
info = self._parse_video(video)
author_names = video.get('authorNames')
info.update({
'uploader': ', '.join(author_names) if author_names else None,
'timestamp': parse_iso8601(video.get('dateAdded')),
'license': video.get('kaUserLicense'),
})
return info
class KhanAcademyUnitIE(KhanAcademyBaseIE):
IE_NAME = 'khanacademy:unit'
_VALID_URL = (KhanAcademyBaseIE._VALID_URL_TEMPL % ('2', '')) + '/?(?:[?#&]|$)'
_TEST = {
'url': 'https://www.khanacademy.org/computing/computer-science/cryptography',
'info_dict': {
'id': 'cryptography',
'title': 'Journey into cryptography',
'title': 'Cryptography',
'description': 'How have humans protected their secret messages through history? What has changed today?',
},
'playlist_mincount': 3,
}]
def _real_extract(self, url):
m = re.match(self._VALID_URL, url)
video_id = m.group('id')
'playlist_mincount': 31,
}
if m.group('key') == 'video':
data = self._download_json(
'http://api.khanacademy.org/api/v1/videos/' + video_id,
video_id, 'Downloading video info')
def _parse_component_props(self, component_props):
curation = component_props['curation']
upload_date = unified_strdate(data['date_added'])
uploader = ', '.join(data['author_names'])
return {
'_type': 'url_transparent',
'url': data['url'],
'id': video_id,
'title': data['title'],
'thumbnail': data['image_url'],
'duration': data['duration'],
'description': data['description'],
'uploader': uploader,
'upload_date': upload_date,
entries = []
tutorials = try_get(curation, lambda x: x['tabs'][0]['modules'][0]['tutorials'], list) or []
for tutorial_number, tutorial in enumerate(tutorials, 1):
chapter_info = {
'chapter': tutorial.get('title'),
'chapter_number': tutorial_number,
'chapter_id': tutorial.get('id'),
}
else:
# topic
data = self._download_json(
'http://api.khanacademy.org/api/v1/topic/' + video_id,
video_id, 'Downloading topic info')
for content_item in (tutorial.get('contentItems') or []):
if content_item.get('kind') == 'Video':
info = self._parse_video(content_item)
info.update(chapter_info)
entries.append(info)
entries = [
{
'_type': 'url',
'url': c['url'],
'id': c['id'],
'title': c['title'],
}
for c in data['children'] if c['kind'] in ('Video', 'Topic')]
return {
'_type': 'playlist',
'id': video_id,
'title': data['title'],
'description': data['description'],
'entries': entries,
}
return self.playlist_result(
entries, curation.get('unit'), curation.get('title'),
curation.get('description'))

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