Sony is automatically rolling out a “PS5 Remote Play” app to PS4 owners, which will theoretically let yo u play PS5 titles by streaming them to your PS4.
This could be useful if you, say, give your PS4 to a friend or simply decide to keep it in a different room of your house. Using the app, you can connect to and control your PS5 just like you could if you were sitting right in front of it.
You can swap through the menus, play next-gen games, and more. However, there are only four quality options: 540p, 720p, and 1080p. 4K playback is not available, regardless of how good the TV you’re streaming to happens to be.
Eurogamer claims that you first need to turn on your PS5’s Remote Play setting to allow your PS4 to connect. To do so, you reportedly go through the menus in the following order: Settings, System, Remote Play, Enable Remote Play.