So the Steam Deck is pretty hyped now.  They showed it as a streaming device in some videos today. It's powerful enough to play pretty much anything directly, heck it could even be a server quite easily with it's specs.   A lot of people got to talking and now people are saying Plex is going to release a version to Steam so that it'd just run through that and play onto SteamOS without the user having to muck about outside of Valves ecosystem. There are plenty of free tools / video play