A new built-in system for creating and sharing your gameplay footage
To enable it on steam deck, you need to switch to the beta channel. After that, you'll have a new setting category for it, and should have a new tab in the overview page.
Default binds are steam button+A to start recording (if you don't have passive recording enable), and steam+y to flag a time in the recording.
Should hopefully be easier than dealing with transferring it off the Switch...
Get your videos where you want them. One-click share to a friend in chat or post your finest moments for the world to see. Plus easily send footage from your Steam Deck to your PC or mobile device.