+    # https://wistia.com/support/embed-and-share/video-on-your-website
+    @staticmethod
+    def _extract_url(webpage):
+        urls = WistiaIE._extract_urls(webpage)
+        return urls[0] if urls else None
+
+    @staticmethod
+    def _extract_urls(webpage):
+        urls = []
+        for match in re.finditer(
+                r'<(?:meta[^>]+?content|(?:iframe|script)[^>]+?src)=["\'](?P<url>(?:https?:)?//(?:fast\.)?wistia\.(?:net|com)/embed/(?:iframe|medias)/[a-z0-9]{10})', webpage):
+            urls.append(unescapeHTML(match.group('url')))
+        for match in re.finditer(
+                r'''(?sx)
+                    <div[^>]+class=(["']).*?\bwistia_async_(?P<id>[a-z0-9]{10})\b.*?\2
+                ''', webpage):
+            urls.append('wistia:%s' % match.group('id'))
+        for match in re.finditer(r'(?:data-wistia-?id=["\']|Wistia\.embed\(["\']|id=["\']wistia_)(?P<id>[a-z0-9]{10})', webpage):
+            urls.append('wistia:%s' % match.group('id'))
+        return urls
+