In the future, if you wish to link to an article, please include the link(s) to either the project's official site, their source repository, or both. Just in case a reader would rather look at the project first before digesting someone else's opinion. Plus, ItsFoss.com can be very ad-heavy (made the mistake of going there without an ad-blocker once) and not everyone uses ad-blockers.
The video editor Kdenlive has a stabilise clip option, which works by comparing the position of pixels. It's quite good at smoothing out occasional judders.
Thank you, I'll have to give it a go - some of them have a constant vibration on account of having been mounted on a motorbike, others are just a little unstable