Earlier today, I posted about not being able to find a ready-to-use tool to capture timelapses on Gnome running on Wayland on my Ubuntu, so I went ahead and wrote a custom solution: https://github.com/CrociDB/gnome-timelapse

The whole instruction on how to get that setup is described in the github page, but basically I just have to run:

shell ./timelapse.sh capture .5 full timelapse.mp4

And that will capture one screen every two seconds until I Ctrl+C and it will generate a MP4 file afterwards.

It uses gnome-screenshot to do the captures, but I had to edit its source to remove the annoying flash and shutter sound, so I bundled the rebuilt version of it.

Let me know if that's useful to you. :)