It doesn't embed youtube at all without changing the page layout.
I tried it repeatedly using different methods.
Basically, it's the same as using wordpress's regular method for embedding, doesn't really work.
If you need to embed videos, just turn of the editor under the user---> profile section under the dashboard. That seemed to work much better.
I appreciate your taking the time to make a plugin but for me, it didn't work.
Best of luck and thank you.