Youtube embed code does not work in html for firefox

Question

I'm brand new to HTML and trying to develop some basic skills and build a knowledge base by writing example pages. I copy and paste the default youtube embed code and paste it in my code. If I use the old code, I get a big white box. The new code yields a box containing dialog which states that firefox could not find the page. Chrome loads the object with no issues. Here is the code:

<iframe width="560" height="315" src="https://www.youtube.com/embed/OIDnYMODZAQ" frameborder="0" allowfullscreen></iframe>

Answer 1

Try using http instead of https

      <iframe width="560" height="315" src="http://www.youtube.com/embed/OIDnYMODZAQ" frameborder="0" allowfullscreen></iframe>