This one’s less of a geek-out and more a random tip I wish I’d known years ago. If you make any screen recordings, you’ve probably hit the problem where the recording ends up the wrong size or aspect ratio, and then you’re stuck cropping and reframing it all in the edit.
The fix is one of these tiny 4K HDMI dummy plugs, about $3 each on Amazon. You plug one into a spare HDMI port and it instantly resizes your screen to a clean widescreen ratio, so everything’s already the perfect size for YouTube, no cropping, no rescaling later. It’s all sorted at the time of recording.
I used to keep a whole separate screen at the right aspect ratio just for this, which annoyed me sitting there when I wasn’t recording. Now I work off one main ultrawide and just plug this in when I need to record something, and there’s nothing to reframe afterwards.
One bonus I only realised later: it also lets you record in 4K even if your monitor isn’t, since the plug tells your computer there’s a 4K display attached. For a couple of dollars, it’s one of the easiest wins you can grab if you do any screen recordings.
