How can I add geo location for photos that Google Photos will use

[xanderdore]

I'm looking for a way to add the GPS location in order for Google Photos to use them.
I scanned a bunch of old photos and it would be great if I could also add the location in there.
I already used http://www.mynthon.net/static/exif-geotag-generator/map.html and it seems to work great. I get the commands, I run them if I check the GPS data is integrated into the metadata.
I also used https://www.picageotag.com/en/. And it's the same thing. If I run the command to check the metadata all fields are there.
I see in the metadata of the photos the

Code Select Expand

GPS Version, GPS Latitude Ref, GPS Longitude Ref, GPS Latitude, GPS Longitude, GPS Position all with values.
When I upload them to Google Photos it seems not to care about these and asks me if I want to add the Location by hand (this location is only used by Google Photos).

Also I checked a "normal" smartphone photo and I see it has extra fields:

Code Select Expand

GPS:
GPSAltitude
GPSAltitudeRef
GPSDestBearing
GPSHPositioningError
GPSImgDirection
GPSImgDirectionRef
GPSLatitude
GPSLongitude
GPSLatitudeRef
GPSLongitudeRef
GPSSpeed
GPSSpeedRef

Composite:
GPSAltitude
GPSLongitude
GPSLatitude
GPSPosition

I'll try to add a generic

Code Select Expand

GPSAltitude. Google Photos could have some backend logic where they use GPS data from a photo if it contains certain attributes.

I also added to these photos a timestamp and description and for these Google Photos has no problem using them.

Does anyone have any idea?

Thank you,
Xander

[StarGeek]

What kind of images?  What is the output from this command for your file
exiftool -G1 -a -s -gps* file.jpg

I just uploaded two jpg images to Google Photos.  One with GPS coordinates only in the EXIF block

Code Select Expand

---- GPS ----
GPSVersionID                    : 2.3.0.0
GPSLatitudeRef                  : North
GPSLatitude                     : 40 deg 41' 21.12"
GPSLongitudeRef                 : West
GPSLongitude                    : 74 deg 2' 40.20"
and one with GPS coordinates only in the XMP block

Code Select Expand

---- XMP-exif ----
GPSLatitude                     : 40 deg 41' 21.12" N
GPSLongitude                    : 74 deg 2' 40.20" W

In both cases, Google photos properly located the images