INN Labs

Pym.js Embeds provides shortcode and Gutenberg block wrappers for embedding responsive iframes using <a href="http://blog.apps.npr.org/pym.js/" rel="nofollow ugc">Pym.js</a>, developed by the NPR Visuals Team. Embedded content resizes vertically to match its container’s width.
AMP compatibility is provided by the <a href="https://wordpress.org/plugins/amp/" rel="ugc">official AMP plugin</a>.
<h3>Pym.js Resources from NPR</h3>
You may also want to look at NPR’s Pym.js resources:
<ul>
<li><a href="http://blog.apps.npr.org/pym.js/" rel="nofollow ugc">Pym.js homepage</a></li>
<li><a href="https://github.com/nprapps/pym.js/" rel="nofollow ugc">Pym.js repo on GutHub/nprapps</a></li>
</ul>

Pym.js Embeds

A WordPress block and shortcode for embedding iframes that are responsive horizontally and vertically, using the NPR Visuals Team's Pym.js.

Ben Lobaugh (blobaugh)

Channel 9 is a video service run by Microsoft. Channel 9 provides a way to embed videos 
but is not yet on the WordPress embeds core list. This plugin allows you to simply paste 
a URL to a Channel 9 video as you would with any other embed service into your post. 
The video from Channel 9 will show at that location.
Channel 9 can be found at http://channel9.msdn.com

Channel 9 Embed

Channel 9 is a video service run by Microsoft. Channel 9 provides a way to embed videos

Pym.js Embeds vs Channel 9 Embed