Securing content

Hello everyone,

I have a quick question. What is the best way to secure videos on one specific page through Wordpress.
Here is the situation. I have a website, where I would like to have Vimeo videos shown only to people who bought the course. I have Vimeo Pro and I bought membership plugin, but all this is very confusing to set up.

Currently I have download only store, but I have such a big problem with these products being pirated, so I need to think in terms of protecting my content as much as I can. Since this being big number (11 pirated items on one purchased item), it´s highly affecting my average sales.

Any feedback or ideas are highly appreciated.