open video without closing my site

Use <a href="videourl" target="_new">Link!</a>

Adding in target="_new" will force the browser to open a new tab or window.

Ok cool.

I have another question: what means “rel=nofollow”

It means search engines don’t follow the links.

https://en.wikipedia.org/wiki/Nofollow

I added target=”_new” and it is still not opening a new window

so why do I need to add “rel=nofollow” to my video links

Try target="_blank" – Though not ALL browsers will let that work.

And you don’t need to add nofollow.