PIP with 4K output is the basic function of G900. G901 can provide two windows. G902 can provide 3 windows in one display or 4 windows in two displays. G904 can provide up to 5 windows in one display or 8 windows in 4 displays. All the PIP images can change cropping area, aspect ratio, rotation, size and location. it is the most powerfull PIP/POP engine in the world. 

G901   G902   G904