It's stupid, but the Google Spatial Media Metadata Injector tool 2.2 doesn't work on my Mac M1 running Monterey.
My workaround is to download the Windows version.. then use Wineskin Winery to wrap it. It now works on Monterery.
https://github.com/Gcenx/WineskinServer
and of course grab the Windows version of the Spatial Media Metadata Injector Tool:
https://github.com/google/spatial-media/releases
