Can't get the display to work properly

[micksulley]

I am trying to replicate the Mr Dave video https://www.youtube.com/watch?v=T3VUu0VVuqg so that I can tune the detection parameters. This is what I have done -
Pi5 with Pi v3 camera (also tried on Pi4 with the same results.)
Fresh install of full bookworm and updates
Created virtual environment and rebooted
install motion by following -
https://motion-project.github.io/motion_build.html#Abbreviated_Building
All went well but last step 'make install' had to be run with sudo, is that normal?
Created ~/.motion and copy in motion.conf and camera1.conf
run it with libcamerify motion
It records video which looks good, but the display is the detection display as shown on the right in the Mr Dave Video.
stream_preview_method was commented out in motion.conf.

This is what I have tried -

Change to stream_preview_method 0
Restart - just the same
Reboot - just the same
Change to stream_preview_method 1
Restart - just the same
Reboot - just the same
Change to stream_preview_method 2
Restart - static image of detection, which is correct
Change to stream_preview_method 3
Restart - now show side by side display, but both are detection
Reboot - again side by side display, but both are detection
Change to stream_preview_method 4
Restart - shows the single proper display as expected.

Questions
Is it normal to need to use sudo for 'make install' if not how to avoid it?
Is there some other reason why I cannot get the side by side display to work properly?
Thanks
Mick