for google photos, immich creates unnecessary XMP sidecar that duplicates embedded GPS data

[paschun]

In this scenario, there is a photo and it's associated supplemental-metadata.json. The photo contains embedded GPS location data, and the json has identical location data in both geoData and geoDataExif fields.

> exiftool '-gps*' photo.jpg
[Composite]     GPSPosition                     : 35 deg 0' 43.86" N, 82 deg 33' 59.03" W

  "geoData": {
    "latitude": 35.012184,
    "longitude": -82.5663982,
    "altitude": -0.0,
    "latitudeSpan": 0.0,
    "longitudeSpan": 0.0
  },
  "geoDataExif": {
    "latitude": 35.012184,
    "longitude": -82.5663982,
    "altitude": 0.0,
    "latitudeSpan": 0.0,
    "longitudeSpan": 0.0
  },

When uplodaded with immich-go from-google-photos , In immich, a superfluous XMP sidecar is created that also has this GPS metadata.

 <rdf:Description rdf:about=''
  xmlns:exif='http://ns.adobe.com/exif/1.0/'>
  <exif:GPSLatitude>35,0.73104N</exif:GPSLatitude>
  <exif:GPSLongitude>82,33.983892W</exif:GPSLongitude>
 </rdf:Description>

This XMP sidecar is unnecessary as immich will be able to detect the GPS location from the embedded data.

Immich-go should detect when the embedded and json GPS data are identical, use the embedded data when they are identical, and use the json data when they are not.

[simulot]

This is doable.