purple-dragon parent
The linked post is about a new Metal-based renderer for OBS Studio on MacOS. The software you linked is for Linux.
I think the point extends well beyond the specific app/OS example though, even though the article talks to macOS exclusively. For macOS and Windows there are built in tools which offer direct recording functionality. To trigger on macOS Command+Shift+5 (or launch it via QuickTime as jasonlotito noted), on Windows Win+Shift+S. Both of these utilize the same OS APIs OBS Studio uses to get the screen content, but they skip the step of needing a renderer at all.
You need to install a 3rd party software Blackhole to even get desktop audio for screen recording with QuickTime. After about an hour of troubleshooting settings I gave up and used OBS, esp since I was in a public space at the time and the Blackhole config disabled my headphones and for a moment you could hear a loud YouTube tutorial playing through my Mac speakers. Also the shortcut to stop screen recording on QuickTime sucks, it’s like CMD+CTRL+ESC and you need to have it memorized because there’s no “Stop Recording” button option
> get desktop audio for screen recording with QuickTime
A famously missing macOS feature. Loopback is yonder: https://rogueamoeba.com/loopback/
> the shortcut to stop screen recording on QuickTime sucks, it’s like CMD+CTRL+ESC
I just stop it from the menu bar, then on the resultant video press Cmd-T (trim) to lop off that footage.
It shows up in the notification area bar (top) as an ambiguous circle with a square in it.
I've had a lot of issues using the QuickTime screen recorder, especially when it comes to recording from an iOS simulator for app/game development and needing to produce preview videos.