Plyr + Youtube + iOS restricted websites

[xrnv2]

Hello!
I found Plyr as great tool that allow achieve my goals!
But I have one question about possible solutions...
On iOS you can restrict available websites and add my website to list of exceptions. But video content in that case is blocked because of iframe point on different not white listed domain.
So do you know any simple and elegant solution to bypass/proxy traffic via my own backend?
I think about something somewhat similar to: https://cors-proxy.htmldriven.com
How to deal with that?