mirror of
https://github.com/yt-dlp/yt-dlp.git
synced 2024-11-25 00:00:48 +01:00
111 lines
4.0 KiB
Python
111 lines
4.0 KiB
Python
import json
|
|
|
|
from .common import InfoExtractor
|
|
from ..utils import (
|
|
int_or_none,
|
|
parse_iso8601,
|
|
try_get,
|
|
)
|
|
|
|
|
|
class KhanAcademyBaseIE(InfoExtractor):
|
|
_VALID_URL_TEMPL = r'https?://(?:www\.)?khanacademy\.org/(?P<id>(?:[^/]+/){%s}%s[^?#/&]+)'
|
|
|
|
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)
|
|
content = self._download_json(
|
|
'https://www.khanacademy.org/api/internal/graphql/FetchContentData',
|
|
display_id, query={
|
|
'fastly_cacheable': 'persist_until_publish',
|
|
'hash': '4134764944',
|
|
'lang': 'en',
|
|
'variables': json.dumps({
|
|
'path': display_id,
|
|
'queryParams': 'lang=en',
|
|
'isModal': False,
|
|
'followRedirects': True,
|
|
'countryCode': 'US',
|
|
}),
|
|
})['data']['contentJson']
|
|
return self._parse_component_props(self._parse_json(content, display_id)['componentProps'])
|
|
|
|
|
|
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': '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'],
|
|
}
|
|
|
|
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': 'Cryptography',
|
|
'description': 'How have humans protected their secret messages through history? What has changed today?',
|
|
},
|
|
'playlist_mincount': 31,
|
|
}
|
|
|
|
def _parse_component_props(self, component_props):
|
|
curation = component_props['curation']
|
|
|
|
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'),
|
|
}
|
|
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)
|
|
|
|
return self.playlist_result(
|
|
entries, curation.get('unit'), curation.get('title'),
|
|
curation.get('description'))
|