Force Wistia Video Embeds to show a custom poster image, like a GIF

force-wistia-embed-to-show-custom-poster.html

<div class="video" id="customvideo">
	<script src="https://fast.wistia.com/embed/medias/ugydl9lr6t.jsonp" async></script><script src="https://fast.wistia.com/assets/external/E-v1.js" async></script><div class="wistia_responsive_padding" style="padding:56.25% 0 0 0;position:relative;"><div class="wistia_responsive_wrapper" style="height:100%;left:0;position:absolute;top:0;width:100%;"><div class="wistia_embed wistia_async_ugydl9lr6t videoFoam=true" style="height:100%;position:relative;width:100%"><div class="wistia_swatch" style="height:100%;left:0;opacity:0;overflow:hidden;position:absolute;top:0;transition:opacity 200ms;width:100%;"><img src="https://fast.wistia.com/embed/medias/ugydl9lr6t/swatch" style="filter:blur(5px);height:100%;object-fit:contain;width:100%;" alt="" aria-hidden="true" onload="this.parentNode.style.opacity=1;" /></div></div></div></div>
</div>

<script>
	jQuery(window).bind("load", function () {
		var customvideothumbnail = document.querySelector('#customvideo div.w-css-reset:nth-of-type(2) img');
		faldovideothumbnail.setAttribute("src", "https://www.example.com/your-custom-thumbnail.gif");
		faldovideothumbnail.removeAttribute("srcset");
	});
</script>

Wistia is annoying.