How to Embed a Youtube Video in a Webpage
YouTube's shortened share link (like https://youtu.be/...) can't be directly embedded in a webpage <iframe>. That's why it throws an "error 153" or just fails to load in many cases.
The fix is to convert it into a proper embed URL, or use the privacy-enhanced (no-cookie) domain version.
Here's the full explanation:
When you copy the video URL from YouTube's share button, you get something like:
https://youtu.be/JYfiaSKeYhE
The working embed form is:
https://www.youtube.com/embed/JYfiaSKeYhE
or the privacy-enhanced (no tracking cookies) version:
https://www.youtube-nocookie.com/embed/JYfiaSKeYhE