Use arduino Yun to show a real time video from gopro and wifi

Official Hardware Classic Yún
4

I need arduino because i need to control other accessories like motors or sensors.

I used arduino USB to stream live video from a webcam and it works fine. I bought this (http://www.amazon.it/grabber-cattura-immagini-acquisizione-notebook/dp/B00ESDZO6U) to use the gopro like a webcam but without results.

Any idea?

Thank You.