-        req = sanitized_Request(
-            'http://play.iprima.cz/prehravac/init?_infuse=1'
-            '&_ts=%s&productId=%s' % (round(time.time()), video_id))
-        req.add_header('Referer', url)
-        playerpage = self._download_webpage(req, video_id, note='Downloading player')
+        playerpage = self._download_webpage(
+            'http://play.iprima.cz/prehravac/init',
+            video_id, note='Downloading player', query={
+                '_infuse': 1,
+                '_ts': round(time.time()),
+                'productId': video_id,
+            }, headers={'Referer': url})