It seems you're looking for a guide on — likely a typo or shorthand for PS4 Remote Play (streaming your PS4 to another device) or a specific capture device like "PStreamer" (a brand for HDMI streaming dongles).
The most prominent open-source implementation of the PS4 streaming protocol is . pstreamer ps4
: Fast, stable internet upload speeds are heavily required if you intend to stream outside your home local area network. "pstreamer PS4" It seems you're looking for a