Impossible to embed Twitch clips on website

API
11

Try

<iframe src="https://clips.twitch.tv/embed?clip=PoisedRespectfulFishKappaPride-HAk1uuN7rijCmJy1" id="chat_frame" style="width: 800px; height: 400px;"></iframe>

<script type="text/javascript">
  var parent = ['sites.google.com', 'www.gstatic.com', window.location.host];
  console.log(parent);
  document.getElementById('chat_frame').setAttribute('src', document.getElementById('chat_frame').getAttribute('src') + '&parent=' + parent.join('&parent='));
</script>