-        wat_id = self._html_search_regex(
-            r'(["\'])(?:https?:)?//www\.wat\.tv/embedframe/.*?(?P<id>\d{8})\1',
-            webpage, 'wat id', group='id')
+
+        wat_id = None
+
+        data = self._parse_json(
+            self._search_regex(
+                r'__APOLLO_STATE__\s*=\s*({.+?})\s*(?:;|</script>)', webpage,
+                'data', default='{}'), video_id, fatal=False)
+
+        if data:
+            try:
+                wat_id = next(
+                    video.get('streamId')
+                    for key, video in data.items()
+                    if isinstance(video, dict)
+                    and video.get('slug') == video_id)
+                if not isinstance(wat_id, compat_str) or not wat_id.isdigit():
+                    wat_id = None
+            except StopIteration:
+                pass
+
+        if not wat_id:
+            wat_id = self._html_search_regex(
+                (r'(["\'])(?:https?:)?//www\.wat\.tv/embedframe/.*?(?P<id>\d{8})\1',
+                 r'(["\']?)streamId\1\s*:\s*(["\']?)(?P<id>\d+)\2'),
+                webpage, 'wat id', group='id')
+