Basic Question to use API

Hello there,

I’m new to Jitsi. More precisely, I use meet.jit.si a lot, and now I’m trying to use it further on.

My problem: I was wondering if (and how) it is possible to get participant’s video(stream) to display it “alone”.
The idea behind will be to create a custom web interface in which I can position any participant’s video “where” I want. This means I have to be able to get participant’s stream url to put it where I want.
From my searches, I guess it is not possible using meet.jit.si external API, right ?

So I wonder if it is possible with Jitsi Meet API as mentioned here.
But this means creating my very own jitsi server.

Many thanks,
Regards,
Raphaël.