Dumb Question: How do you insert a youtube video in a post.

No matter what I do, the video always comes out in this smaller size. 
When previewed, it's the proper size but when I "post" it, the screen
goes blank (all white) and I have to refresh it to get it to work, but again,
at this smaller size. Every darn time.

All the best,
Nonoise

Now people do this its VERY ANNOYING for sure.

@elliottbnewcombjr 

@millercarbon 

Thanks a bunch for the info.  Didn't think it would be so easy.

Also if you click Share then you can cue the video to start where you want

Open video on youtube. (I pause it). copy the link at the address bar up top

open a response box here

Paste, the video magically appears.