Steam now has a built-in game recording function for PC and Steam Deck ... You don't realize you need a screen recorder app for your gameplay until after the cool event has happened.
On-Demand Recording: This option lets players manually start and stop recordings. Gameplay will be saved in MPEG ... such as from the Steam Deck to a desktop PC, or share an MP4 via the Steam Mobile ...
You may not think so, but the best capture cards are still a vital piece of kit for anyone who needs to record ... gameplay and Nvidia and AMD can do it all natively. That's true for PC players ...