1 files changed, 108 insertions, 0 deletions
diff --git a/yt_dlp/extractor/substack.py b/yt_dlp/extractor/substack.py
new file mode 100644
index 0000000..6ee3f75
--- /dev/null
+++ b/yt_dlp/extractor/substack.py
@@ -0,0 +1,108 @@
+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,
+        }