Q:

YouTube iframe shows forbidden error on blogspot page and webpage

I am trying to show a youtube video on my webpage and Blogspot page using HTML iframe. 
<iframe width="320" height="250" src="http://youtube.com/watch?v=Y4lqtiYLuJU"></iframe>

But it's giving me the following forbidden error :
This website does not permit its contents to be displayed in a frame, it must be opened in a new window. 

I am getting the same error on Blogspot when posting this iframe code to my Blogspot page. 
Is there any way to fix this? 

A:

YouTube iframes works over HTTPS
    <iframe width="320" height="250"
src="https://www.youtube.com/embed/Y4lqtiYLuJU">
    </iframe>

