[HentaiStigma] Support new frame format with HTML5 video

* resolves ytdl-org#25019

youtube_dl/extractor/hentaistigma.py

@@ -1,6 +1,11 @@
+# coding: utf-8
 from __future__ import unicode_literals
 
 from .common import InfoExtractor
+from ..utils import (
+    merge_dicts,
+    traverse_obj,
+)
 
 
 class HentaiStigmaIE(InfoExtractor):
@@ -24,16 +29,17 @@ def _real_extract(self, url):
         title = self._html_search_regex(
             r'<h2[^>]+class="posttitle"[^>]*><a[^>]*>([^<]+)</a>',
             webpage, 'title')
-        wrap_url = self._html_search_regex(
+
+        wrap_url = self._search_regex(
             r'<iframe[^>]+src="([^"]+mp4)"', webpage, 'wrapper url')
-        wrap_webpage = self._download_webpage(wrap_url, video_id)
 
-        video_url = self._html_search_regex(
-            r'file\s*:\s*"([^"]+)"', wrap_webpage, 'video url')
+        vid_page = self._download_webpage(wrap_url, video_id)
+
+        entries = self._parse_html5_media_entries(wrap_url, vid_page, video_id)
+        self._sort_formats(traverse_obj(entries, (0, 'formats')) or [])
 
-        return {
+        return merge_dicts({
             'id': video_id,
-            'url': video_url,
             'title': title,
             'age_limit': 18,
-        }
+        }, entries[0])