Applied the patch provided by dirkf in https://github.com/ytdl-org/youtube-dl/issues/30458.

yt_dlp/extractor/alphaporno.py

@@ -1,9 +1,13 @@
+import re
+
 from .common import InfoExtractor
 from ..utils import (
     int_or_none,
     parse_duration,
     parse_filesize,
-    parse_iso8601,
+    parse_resolution,
+    unified_timestamp,
+    urljoin,
 )
 
 
@@ -11,18 +15,17 @@ class AlphaPornoIE(InfoExtractor):
     _VALID_URL = r'https?://(?:www\.)?alphaporno\.com/videos/(?P<id>[^/]+)'
     _TEST = {
         'url': 'http://www.alphaporno.com/videos/sensual-striptease-porn-with-samantha-alexandra/',
-        'md5': 'feb6d3bba8848cd54467a87ad34bd38e',
+        'md5': '7e6a1cdd48fa67362a5a11d7039164e7',
         'info_dict': {
             'id': '258807',
             'display_id': 'sensual-striptease-porn-with-samantha-alexandra',
             'ext': 'mp4',
             'title': 'Sensual striptease porn with Samantha Alexandra',
+            'description': 'md5:3c6d31008980654acaeb11451454a62c',
             'thumbnail': r're:https?://.*\.jpg$',
-            'timestamp': 1418694611,
+            'timestamp': 1418701811,
             'upload_date': '20141216',
             'duration': 387,
-            'filesize_approx': 54120000,
-            'tbr': 1145,
             'categories': list,
             'age_limit': 18,
         },
@@ -31,40 +34,70 @@ class AlphaPornoIE(InfoExtractor):
     def _real_extract(self, url):
         display_id = self._match_id(url)
 
-        webpage = self._download_webpage(url, display_id)
+        webpage, urlh = self._download_webpage_handle(url, display_id)
 
+        info = {
+            'display_id': display_id,
+        }
         video_id = self._search_regex(
             r"video_id\s*:\s*'([^']+)'", webpage, 'video id', default=None)
+        if video_id:
+            info['url'] = self._search_regex(
+                r"video_url\s*:\s*'([^']+)'", webpage, 'video url')
+            info['ext'] = self._html_search_meta(
+                'encodingFormat', webpage, 'ext', default='.mp4')[1:]
+        else:
+            video_id = self._search_regex(
+                r'video_id=(\d+)\b', webpage, 'video id')
+            formats = []
+            joined_url = urljoin(urlh.geturl(), rf'/get_file/\d.+?/{video_id}/{video_id}_(\w+)\..+?')
+            for video_url, res in re.findall(rf'''({joined_url})(?:'|"|\b)\s''', webpage):
+                fmt = {
+                    'format_id': f'f{res}',
+                    'url': video_url,
+                }
+                fmt.update(parse_resolution(res) or {})
+                formats.append(fmt)
+            self._sort_formats(formats)
+            info['formats'] = formats
 
-        video_url = self._search_regex(
+        title = (
-            r"video_url\s*:\s*'([^']+)'", webpage, 'video url')
+            self._html_search_regex(r'<title[^>]*>([^<]+?)(?:\s*-\s*Alpha\s*Porno\s*)?<', webpage, 'title', default=None)
-        ext = self._html_search_meta(
+            or self._og_search_title(webpage, default=None)
-            'encodingFormat', webpage, 'ext', default='.mp4')[1:]
+            or self._search_regex(
-
+                (r'<meta content="([^"]+)" itemprop="description">',
-        title = self._search_regex(
+                 r'class="title" itemprop="name">([^<]+)<'),
-            [r'<meta content="([^"]+)" itemprop="description">',
+                webpage, 'title')
-             r'class="title" itemprop="name">([^<]+)<'],
+        )
-            webpage, 'title')
+        description = (
-        thumbnail = self._html_search_meta('thumbnail', webpage, 'thumbnail')
+            self._og_search_description(webpage)
-        timestamp = parse_iso8601(self._html_search_meta(
+            or self._search_regex(
-            'uploadDate', webpage, 'upload date'))
+                r'<meta content="([^"]+)" itemprop="description">',
-        duration = parse_duration(self._html_search_meta(
+                webpage, 'description')
-            'duration', webpage, 'duration'))
+        )
+        thumbnail = (
+            self._og_search_thumbnail(webpage)
+            or self._html_search_meta('thumbnail', webpage, 'thumbnail')
+        )
+        timestamp = unified_timestamp(self._og_search_property('video:release_date', webpage)
+                                      or self._html_search_meta('uploadDate', webpage, 'upload date'))
+        duration = parse_duration(self._og_search_property('video:duration', webpage)
+                                  or self._html_search_meta('duration', webpage, 'duration'))
         filesize_approx = parse_filesize(self._html_search_meta(
-            'contentSize', webpage, 'file size'))
+            'contentSize', webpage, 'file size', default=None))
         bitrate = int_or_none(self._html_search_meta(
-            'bitrate', webpage, 'bitrate'))
+            'bitrate', webpage, 'bitrate', default=None))
-        categories = self._html_search_meta(
+        categories = re.split(
-            'keywords', webpage, 'categories', default='').split(',')
+            r'\s*,\s*',
+            self._html_search_meta(
+                'keywords', webpage, 'categories', default=''))
 
         age_limit = self._rta_search(webpage)
 
-        return {
+        info.update({
             'id': video_id,
-            'display_id': display_id,
-            'url': video_url,
-            'ext': ext,
             'title': title,
+            'description': description,
             'thumbnail': thumbnail,
             'timestamp': timestamp,
             'duration': duration,
@@ -72,4 +105,5 @@ class AlphaPornoIE(InfoExtractor):
             'tbr': bitrate,
             'categories': categories,
             'age_limit': age_limit,
-        }
+        })
+        return info