I think if I changed my account, the situation would be better Stream-adstart

How do I add the last part (stream-adstart)
Does anything else need to be done, or do I just put a tag and it works?

<!-- You can use styles and CSS on this iframe element where the video player will appear -->
<iframe
  src="https://customer-<CODE>.cloudflarestream.com/<VIDEO_UID>/iframe"
  style="border: none"
  height="720"
  width="1280"
  allow="accelerometer; gyroscope; autoplay; encrypted-media; picture-in-picture;"
  allowfullscreen="true"
  id="stream-player"
></iframe>

<script src="https://embed.cloudflarestream.com/embed/sdk.latest.js"></script>

<!-- Your JavaScript code below-->
<script>
  const player = Stream(document.getElementById('stream-player'));
  player.addEventListener('play', () => {
    console.log('playing!');
  });
  player.play().catch(() => {
    console.log('playback failed, muting to try again');
    player.muted = true;
    player.play();
  });
</script>
Non-standard Events
Non-standard events are prefixed with stream- to distinguish them from standard events.

{{}}

stream-adstart

Fires when ad-url attribute is present and the ad begins playback
stream-adend

Fires when ad-url attribute is present and the ad finishes playback
stream-adtimeout

Fires when ad-url attribute is present and the ad took too long to load.
{{}}```