1) "Embed" the video from youtube.
2) Once you copy that link, you should have something similar to this:
<iframe width="420" height="315" src="
https://www.youtube.com/embed/b0cRp_LxgYE" frameborder="0" allowfullscreen></iframe>
3) Then, you just need the
https highlighted part here. Only what is between the quotation marks. So copy it:
<iframe width="420" height="315" src="
https://www.youtube.com/embed/b0cRp_LxgYE" frameborder="0" allowfullscreen></iframe>
It looks like this now:
https://www.youtube.com/embed/b0cRp_LxgYE4) Then just insert that link here between the [youtube] and the [/youtube]:
[@youtube]https://www.youtube.com/embed/b0cRp_LxgYE[/youtube]
But remove the @ symbol from above, so it is only [youtube]. I just added the "@" symbol so you could actually see the code.
The functioning link should appear so:
[youtube]https://www.youtube.com/embed/b0cRp_LxgYE[/youtube]