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yt-dlp/yt_dlp/extractor/substack.py

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import re
import urllib.parse
from .common import InfoExtractor
from ..utils import js_to_json, str_or_none, traverse_obj
class SubstackIE(InfoExtractor):
_VALID_URL = r'https?://(?P<username>[\w-]+)\.substack\.com/p/(?P<id>[\w-]+)'
_TESTS = [{
'url': 'https://haleynahman.substack.com/p/i-made-a-vlog?s=r',
'md5': 'f27e4fc6252001d48d479f45e65cdfd5',
'info_dict': {
'id': '47660949',
'ext': 'mp4',
'title': 'I MADE A VLOG',
'description': 'md5:9248af9a759321e1027226f988f54d96',
'thumbnail': 'md5:bec758a34d8ee9142d43bcebdf33af18',
'uploader': 'Maybe Baby',
'uploader_id': '33628',
}
}, {
'url': 'https://haleynahman.substack.com/p/-dear-danny-i-found-my-boyfriends?s=r',
'md5': '0a63eacec877a1171a62cfa69710fcea',
'info_dict': {
'id': '51045592',
'ext': 'mpga',
'title': "🎧 Dear Danny: I found my boyfriend's secret Twitter account",
'description': 'md5:a57f2439319e56e0af92dd0c95d75797',
'thumbnail': 'md5:daa40b6b79249417c14ff8103db29639',
'uploader': 'Maybe Baby',
'uploader_id': '33628',
}
}, {
'url': 'https://andrewzimmern.substack.com/p/mussels-with-black-bean-sauce-recipe',
'md5': 'fd3c07077b02444ff0130715b5f632bb',
'info_dict': {
'id': '47368578',
'ext': 'mp4',
'title': 'Mussels with Black Bean Sauce: Recipe of the Week #7',
'description': 'md5:b96234a2906c7d854d5229818d889515',
'thumbnail': 'md5:e30bfaa9da40e82aa62354263a9dd232',
'uploader': "Andrew Zimmern's Spilled Milk ",
'uploader_id': '577659',
}
}]
@classmethod
def _extract_embed_urls(cls, url, webpage):
if not re.search(r'<script[^>]+src=["\']https://substackcdn.com/[^"\']+\.js', webpage):
return
mobj = re.search(r'{[^}]*\\?["\']subdomain\\?["\']\s*:\s*\\?["\'](?P<subdomain>[^\\"\']+)', webpage)
if mobj:
parsed = urllib.parse.urlparse(url)
yield parsed._replace(netloc=f'{mobj.group("subdomain")}.substack.com').geturl()
raise cls.StopExtraction()
def _extract_video_formats(self, video_id, url):
formats, subtitles = [], {}
for video_format in ('hls', 'mp4'):
video_url = urllib.parse.urljoin(url, f'/api/v1/video/upload/{video_id}/src?type={video_format}')
if video_format == 'hls':
fmts, subs = self._extract_m3u8_formats_and_subtitles(video_url, video_id, 'mp4', fatal=False)
formats.extend(fmts)
self._merge_subtitles(subs, target=subtitles)
else:
formats.append({
'url': video_url,
'ext': video_format,
})
return formats, subtitles
def _real_extract(self, url):
display_id, username = self._match_valid_url(url).group('id', 'username')
webpage = self._download_webpage(url, display_id)
webpage_info = self._parse_json(self._search_json(
r'window\._preloads\s*=\s*JSON\.parse\(', webpage, 'json string',
display_id, transform_source=js_to_json, contains_pattern=r'"{(?s:.+)}"'), display_id)
canonical_url = url
domain = traverse_obj(webpage_info, ('domainInfo', 'customDomain', {str}))
if domain:
canonical_url = urllib.parse.urlparse(url)._replace(netloc=domain).geturl()
post_type = webpage_info['post']['type']
formats, subtitles = [], {}
if post_type == 'podcast':
formats, subtitles = [{'url': webpage_info['post']['podcast_url']}], {}
elif post_type == 'video':
formats, subtitles = self._extract_video_formats(webpage_info['post']['videoUpload']['id'], canonical_url)
else:
self.raise_no_formats(f'Page type "{post_type}" is not supported')
return {
'id': str(webpage_info['post']['id']),
'formats': formats,
'subtitles': subtitles,
'title': traverse_obj(webpage_info, ('post', 'title')),
'description': traverse_obj(webpage_info, ('post', 'description')),
'thumbnail': traverse_obj(webpage_info, ('post', 'cover_image')),
'uploader': traverse_obj(webpage_info, ('pub', 'name')),
'uploader_id': str_or_none(traverse_obj(webpage_info, ('post', 'publication_id'))),
'webpage_url': canonical_url,
}