I followed the instructions at https://developers.facebook.com/docs/instant-articles/reference/social and relatedly https://developers.facebook.com/docs/plugins/embedded-posts#add-code-manually To embed facebook video in an instant article. Here is what I ended up with for my embed, but unfortunately when I preview the page I get a brief gray flash where the video should be and then no video.
<!-- Article body goes here --><figure class="op-social">
<iframe>
<!-- Include Facebook embed code here. Your Facebook embed code should contain both the "JavaScript SDK" and the "Embedded Post Tag" parts described at https://developers.facebook.com/docs/plugins/embedded-posts#add-code-manually -->
<div id="fb-root"></div>
<script>(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src ="//connect.facebook.net/en_US/sdk.js#xfbml=1&version=v2.6&appId=906632809405090";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));</script>
<div class="fb-post" data-href="https://www.facebook.com/PopSugarCelebrity/videos/10154334075529824/0506729/" data-width="300" data-show-text="true"></div>
</iframe>
</figure>
<p>Ernestine Shepherd, one of the world's oldest bodybuilders, turned 80 this month—and she's making us all want to hit the gym. While we're not about to join her for 3 a.m. workouts or 10-mile runs (did we mention she's a badass?), Shepherd's story is a great reminder that it's never too late to adopt healthy habits. She didn't start exercising until she was 56! </p>
I've successfully embedded youtube, twitter and instagram into our various FBIA pages so I thought fb videos should be a snap, but no such luck. Does anyone who has had success embedding FB videos on FBIA pages have some tips on where I went wrong with the above code?