[Q] Screen mirroring app topic

Hello good people,

I'm looking for an app that could mirror screen between android devices (no PCs required).
I've looked around a little, found ScreenShare, but it only mirrors web pages, & photos (at least that's what worked for me).

My situation is that I'll be soon flying abroad and I'll need to mirror my tablet's screen to another tablet so two people could watch the same video at the same time.

If anybody knows of a working app, please let me know.

Thanks!