How to embed video

Aloha guys, how can I embed iframe youtube video in wp post these days? The current version 4.7 is simply removing iframe code from the post automatically as soon as I click save/update.
Is there a way I can save iframe inside a post without using shortcodes or plugins?

Actually I found solution for this, I just edited user in wp and at the top of edit user page you will see an option called, “Visual Editor”. Next to it, you see a check mark box labeled with the following text, “Disable the visual editor when writing”. Click on that check mark box, scroll down to the bottom of your profile page, and click the button labeled, “Update Profile”.

That solved it for me... sry you can close this thread.