I really like this instructional video. I even downloaded a copy. The copy I downloaded is as blurry as the copy on YouTube.

Is it possible to possible to sharpen my copy of that video?

If it is possible, can it be done with freely available software on Linux?

Thanks either way.

I'm using OBS Studio to create some video tutorials. Nothing complicated, just me talking and demonstrating the steps on my screen.

I essentially just need to slice up these recordings into clips, delete portions of the recordings where I mess up or there are long pauses, and export it all as one video.

I've used Premier in the past but I no longer have it. While I am pretty capable of learning how to use software, I would prefer something that doesn't have a huge learning curve.

I need something that runs on either Windows or Linux and is free. Not "free trial" free, but actually free. Open source would be a plus but not a requirement.

Feel free to recommend your favorite free video editor even if it doesn't meet all of my requirements, as maybe it will help someone else in the future.