Google Photos also uses other means to add location metadata to photos, if you have Google Maps Timeline enabled that logs your location, and you've uploaded ph

Google Photos also uses other means to add location metadata to photos, if you have Google Maps Timeline enabled that logs your location, and you've uploaded photos from another camera (e.g. DSLR), it will assume, based on the timestamps, that photos were taken at the location your phone says you were at that time. Sadly I doubt librephotos has that integration. Hmm, one could take out one's Google Maps Timeline info as JSON, and write a parser for librephotos (or others) that adds the location metadata into the photos.