Select the Share button from the command menu of the video you want to embed...
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...then select Embed. Doing so will generate HTML embed code...
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...like this!

See the URL of the video? To make the video autoplay, add this snippet &autoplay=1  to the end of the URL.

It will look like this:

Copy the HTML you revised, then return to Learning. Add a text element to your lesson, select the Edit HTML button to load the HTML editor, then paste the embed code you copied from YouTube.

Select Edit HTML again to close the editor. A preview of your video should appear.