YouTube Embed works fine in admin panel, shows only URL on live site

Hey Bob.
You can add the code in your (child-themes) functions.php.

Thanks for your reply, Maik - Can I just add it to the end, or does it have to be anywhere specific? I'm assuming I just go into Appeaerances --> Theme File Editor --> Functions.php

Good news: I added it as described above and it worked -- Thank you Maik!

Thanks for replying Malik!