+                embed_code = re.sub(r'https?://([^/]+)/z/', r'https://\1/i/', embed_code).replace('/manifest.f4m', '/master.m3u8')
+                if video_type == 'video/kenc':
+                    kenc = self._download_json(
+                        'https://www.vvvvid.it/kenc', video_id, query={
+                            'action': 'kt',
+                            'conn_id': self._conn_id,
+                            'url': embed_code,
+                        }, fatal=False) or {}
+                    kenc_message = kenc.get('message')
+                    if kenc_message:
+                        embed_code += '?' + ds(kenc_message)
+                formats.extend(self._extract_m3u8_formats(
+                    embed_code, video_id, 'mp4',
+                    m3u8_id='hls', fatal=False))