Hi Phil,
is it possible that writing FotoStation tags to a jpg file is only possible if FotoStation tags already exist in that image, but not with images that have no such tags embedded before writing? Or maybe I am not doing it the way it is supposed to work.
I tried with ExifTool 7.98 and 8.28 (Linux).
Test case
=========
1) Updating image file with existing FotoStation metadata
$ exiftool -X sample_fs.jpg | grep 'FotoStation:CropRotation'
<FotoStation:CropRotation>0</FotoStation:CropRotation>
$ exiftool -FotoStation:CropRotation=90 sample_fs.jpg
1 image files updated
$ exiftool -X sample_fs.jpg | grep 'FotoStation:CropRotation'
<FotoStation:CropRotation>90</FotoStation:CropRotation>
=> Ok. CropRotation changed to 90 degrees.
2) Updating image file without existing FotoStation metadata
$ exiftool -X sample_no_fs.jpg | grep -i fotostation
$ exiftool -FotoStation:CropRotation=90 sample_no_fs.jpg
0 image files updated
1 image files unchanged
$ exiftool -X sample_no_fs.jpg | grep -i fotostation
=> Nothing.
Output with option "-v2":
$ exiftool -v2 -FotoStation:CropRotation=90 sample_no_fs.jpg
Writing FotoStation:CropRotation
======== sample_no_fs.jpg
Rewriting sample_no_fs.jpg...
Editing tags in: FotoStation
Creating tags in: FotoStation
JPEG APP1 (372 bytes):
JPEG APP13 (348 bytes):
JPEG APP1 (3973 bytes):
JPEG DQT (65 bytes):
JPEG DQT (65 bytes):
JPEG SOF0:
JPEG DHT (27 bytes):
JPEG DHT (81 bytes):
JPEG DHT (25 bytes):
JPEG DHT (54 bytes):
JPEG SOS
Nothing changed in sample_no_fs.jpg
0 image files updated
1 image files unchanged
... btw - once I remove the FotoStation header using ExifTool from the image with existing FotoStation tags, I can't add anything there, either:
$ exiftool -FotoStation:all= sample_fs.jpg
1 image files updated
$ exiftool -X sample_fs.jpg | grep -i fotostation
$ exiftool -FotoStation:CropRotation=90 sample_fs.jpg
0 image files updated
1 image files unchanged
$ exiftool -X sample_fs.jpg | grep -i fotostation
=> Nothing.
Maybe you can help me here.
Thanks,
André
Hi André,
Yes. If you check the Fotostation support (in many locations throughout the documentation, including on the ExifTool home page), you will see that Fotostation information has R/W (read/write) but not C (create) support. Therefore it can only be edited if it already exists.
- Phil
Oh ... yes. It seems I wasn't looking carefully, always following the path "Tag Names", "FotoStation" - now I found under "Supported File Types".
Thanks for the clarification and a thousand thanks for ExifTool in general.
André