Markdown images and video?

Let's try video
[https://www.youtube.com/watch?v=h_1_szkRYCA](https://www.youtube.com/watch?v=h_1_szkRYCA)
Video embed didn't work
Try again
[http://www.youtube.com/watch?v=h_1_szkRYCA](http://www.youtube.com/watch?v=h_1_szkRYCA)
Nope.
