Component:

<script async custom-element="amp-anim" src="https://cdn.ampproject.org/v0/amp-anim-0.1.js"></script>

<amp-anim src="/media/images/clock.webp"
  width="580"
  height="580"
  layout="fixed"
  attribution="originally from wikimedia.org - public domain license">
  <amp-img placeholder
    alt=""
    layout="fixed"
    width="580"
    height="580"
    tabindex="0"
    src="/media/images/clock.gif">
    <noscript>
      <img src="/media/images/clock.gif" alt="" />
    </noscript>
  </amp-img>
</amp-anim>