-        formats = [{
-            'url': 'http://spankbang.com/_%s/%s/title/%sp__mp4' % (video_id, stream_key, height),
-            'ext': 'mp4',
-            'format_id': '%sp' % height,
-            'height': int(height),
-        } for height in re.findall(r'<(?:span|li|p)[^>]+[qb]_(\d+)p', webpage)]
-        self._check_formats(formats, video_id)
-        self._sort_formats(formats)
+        def extract_format(format_id, format_url):
+            f_url = url_or_none(format_url)
+            if not f_url:
+                return
+            f = parse_resolution(format_id)
+            ext = determine_ext(f_url)
+            if format_id.startswith('m3u8') or ext == 'm3u8':
+                formats.extend(self._extract_m3u8_formats(
+                    f_url, video_id, 'mp4', entry_protocol='m3u8_native',
+                    m3u8_id='hls', fatal=False))
+            elif format_id.startswith('mpd') or ext == 'mpd':
+                formats.extend(self._extract_mpd_formats(
+                    f_url, video_id, mpd_id='dash', fatal=False))
+            elif ext == 'mp4' or f.get('width') or f.get('height'):
+                f.update({
+                    'url': f_url,
+                    'format_id': format_id,
+                })
+                formats.append(f)
+
+        STREAM_URL_PREFIX = 'stream_url_'
+
+        for mobj in re.finditer(
+                r'%s(?P<id>[^\s=]+)\s*=\s*(["\'])(?P<url>(?:(?!\2).)+)\2'
+                % STREAM_URL_PREFIX, webpage):
+            extract_format(mobj.group('id', 'url'))
+
+        if not formats:
+            stream_key = self._search_regex(
+                r'data-streamkey\s*=\s*(["\'])(?P<value>(?:(?!\1).)+)\1',
+                webpage, 'stream key', group='value')
+
+            stream = self._download_json(
+                'https://spankbang.com/api/videos/stream', video_id,
+                'Downloading stream JSON', data=urlencode_postdata({
+                    'id': stream_key,
+                    'data': 0,
+                }), headers={
+                    'Referer': url,
+                    'X-Requested-With': 'XMLHttpRequest',
+                })
+
+            for format_id, format_url in stream.items():
+                if format_url and isinstance(format_url, list):
+                    format_url = format_url[0]
+                extract_format(format_id, format_url)
+
+        self._sort_formats(formats, field_preference=('preference', 'height', 'width', 'fps', 'tbr', 'format_id'))
+
+        info = self._search_json_ld(webpage, video_id, default={})