[extractors/xiaohungsu] Add `XiaoHungSu` extractor

yt_dlp/extractor/_extractors.py

@@ -2378,6 +2378,7 @@ from .xhamster import (
     XHamsterEmbedIE,
     XHamsterUserIE,
 )
+from .xiaohungsu import XiaoHungSuIE
 from .ximalaya import (
     XimalayaIE,
     XimalayaAlbumIE

yt_dlp/extractor/xiaohungsu.py

@@ -0,0 +1,82 @@
+from .common import InfoExtractor
+from ..utils import (
+    float_or_none,
+    js_to_json,
+    merge_dicts,
+    url_or_none,
+)
+from ..utils.traversal import traverse_obj
+
+
+class XiaoHungSuIE(InfoExtractor):
+    _VALID_URL = r'https?://www\.xiaohongshu.com/explore/(?P<id>[a-f0-9]+)'
+    _TESTS = [{
+        'url': 'https://www.xiaohongshu.com/explore/6411cf99000000001300b6d9',
+        'info_dict': {
+            'id': '6411cf99000000001300b6d9',
+            'ext': 'mp4',
+            'uploader_id': '5c31698d0000000007018a31',
+            'description': '#今日快乐今日发[话题]# #吃货薯看这里[话题]# #香妃蛋糕[话题]# #小五卷蛋糕[话题]# #新手蛋糕卷[话题]#',
+            'title': '香妃蛋糕也太香了吧🔥不需要卷❗️绝对的友好',
+            'tags': ['今日快乐今日发', '吃货薯看这里', '香妃蛋糕', '小五卷蛋糕', '新手蛋糕卷'],
+            'duration': 101.726,
+            'thumbnail': r're:https?://sns-webpic-qc\.xhscdn\.com/\d+/[a-z0-9]+/[\w]+',
+        }
+    }]
+
+    def _real_extract(self, url):
+        display_id = self._match_id(url)
+        webpage = self._download_webpage(url, display_id)
+        initial_state = self._search_json(
+            r'window\.__INITIAL_STATE__=', webpage, '__INITIAL_STATE__', display_id, transform_source=js_to_json)
+
+        note_info = traverse_obj(initial_state, ('note', 'noteDetailMap', display_id, 'note'))
+        video_info = traverse_obj(note_info, ('video', 'media', 'stream', ('h264', 'av1', 'h265'), ...))
+
+        formats = []
+        for info in video_info:
+            for url in traverse_obj(info, (('mediaUrl', ('backupUrls', ...)), {url_or_none})):
+                formats.append({
+                    'url': url,
+                    'ext': 'mp4',
+                    **traverse_obj(info, {
+                        'fps': 'fps',
+                        'width': 'width',
+                        'height': 'height',
+                        'vcodec': 'videoCodec',
+                        'acodec': 'audioCodec',
+                        'abr': 'audioBitrate',
+                        'vbr': 'videoBitrate',
+                        'audio_channels': 'audioChannels',
+                        'tbr': 'avgBitrate',
+                        'format': 'qualityType',
+                        'filesize': 'size',
+                        'duration': ('duration', {lambda x: float_or_none(x, scale=1000)})
+                    })
+                })
+
+        thumbnails = []
+        for image_info in traverse_obj(note_info, ('imageList', ...)):
+            for url in traverse_obj(image_info, (('urlDefault', 'urlPre'), {url_or_none})):
+                thumbnails.append({
+                    'url': url,
+                    **traverse_obj(image_info, {
+                        'height': 'height',
+                        'width': 'width'
+                    })
+                })
+        return merge_dicts({
+            'id': display_id,
+            'formats': formats,
+            'thumbnails': thumbnails
+        }, traverse_obj(note_info, {
+            'title': 'title',
+            'description': 'desc',
+            'tags': ('tagList', ..., 'name', {str}),
+            'uploader_id': ('user', 'userId'),
+        }), {
+            'title': self._html_search_meta(['og:title'], webpage),
+            'url': self._html_search_meta(['og:video'], webpage),
+            'thumbnail': self._html_search_meta(['og:image'], webpage),
+            'ext': 'mp4'
+        })