Good morning everyone,
I have duplicate tags, such as described in this post: https://exiftool.org/forum/index.php?topic=4710.0 (https://exiftool.org/forum/index.php?topic=4710.0), where Phil suggested a solution using the application interface, i.e., something like
exiftool -author= FILE.
What is the PERL equivalent of deleting a tag? Phil mentions later in the post that I can use something like:
# delete key
$exifTool->SetNewValue('EXIF:GPSLatitude');
$exifTool->WriteInfo($file);
# write new value
$exifTool->SetNewValue('EXIF:GPSLatitude', $newLatitude);
$exifTool->WriteInfo($file);
However, I still have the duplicates.
[EDIT]
It appears that the deletion works just fine. However, when I call
$exifTool->SetNewValue('EXIF:GPSLongitude' => $refLon, AddValue => 0);
$exifTool->WriteInfo($file);
or
$exifTool->SetNewValue('GPSLongitude' => $refLon, Group => 'EXIF', AddValue => 0);
$exifTool->WriteInfo($file);
two (2) entries are created. This doesn't happen for the 'XMP' group.
This particular file is a Lumix .RW2 file, so EXIF should be ok, right?
[/EDIT]
Thank you,
Paul
Additional information:
Alternatively, I tried using code such as
$exifTool->SetNewValue('EXIF:GPSLatitude' => abs($newLatitudeValue), AddValue => 0);
to overwrite existing values, but that doesn't work. If I check the PERL-processed file with
exiftool -a -G FILE
I get something like this:
'[Composite] GPS Altitude : 30 m Below Sea Level'
'[Composite] GPS Altitude : 30 m Below Sea Level'
'[Composite] GPS Latitude : 10 deg 0\' 0.00" N'
'[Composite] GPS Latitude : 10 deg 0\' 0.00" N'
'[Composite] GPS Latitude Ref : North'
'[Composite] GPS Longitude : 20 deg 0\' 0.00" E'
'[Composite] GPS Longitude : 20 deg 0\' 0.00" E'
'[Composite] GPS Longitude Ref : East'
'[Composite] GPS Position : 10 deg 0\' 0.00" N, 20 deg 0\' 0.00" E'
'[EXIF] GPS Altitude : 30 m'
'[EXIF] GPS Altitude : 30 m'
'[EXIF] GPS Altitude Ref : Below Sea Level'
'[EXIF] GPS Altitude Ref : Below Sea Level'
'[EXIF] GPS Latitude : 10 deg 0\' 0.00"'
'[EXIF] GPS Latitude : 10 deg 0\' 0.00"'
'[EXIF] GPS Latitude Ref : North'
'[EXIF] GPS Latitude Ref : North'
'[EXIF] GPS Longitude : 20 deg 0\' 0.00"'
'[EXIF] GPS Longitude : 20 deg 0\' 0.00"'
'[EXIF] GPS Longitude Ref : East'
'[EXIF] GPS Longitude Ref : East'
'[XMP] GPS Altitude : 30 m'
'[XMP] GPS Altitude Ref : Below Sea Level'
'[XMP] GPS Latitude : 10 deg 0\' 0.00" N'
'[XMP] GPS Longitude : 20 deg 0\' 0.00" E'
It seems there are 2 EXIF groups in the RW2 file -- one in the top-level TIFF package, and one in the embedded JPEG image. You can use the -G5 option when extracting to see more details about exactly where these are located. ExifTool writes both of these.
- Phil
Indeed. Problem solved!
Thank you Phil, as always!
Paul