Hi!
Why does this work,
exiftool abc.pdf -xmp-bibtex:volume
-> Volume: 89
but this does not:
exiftool abc.pdf -xmp-bibtex:volume="123"
-> "Warning: Tag 'xmp-bibtex:Volume' does not exist
-> Nothing to do.
Cheers
Stefan
Hi Stefan,
ExifTool will extract any XMP information that exists, even if it hasn't been pre-defined. But ExifTool can only write tags that have been pre-defined. You can create user-defined tags to write anything you want. See the XMP-xxx example in the sample config file (https://exiftool.org/config.html).
- Phil
THANKS!
Will fiddle around a bit...
Best
Stefan
I have expanded this paragraph in the XMP tag name documentation (https://exiftool.org/TagNames/XMP.html) in an attempt to clear this up in the documentation:
ExifTool will extract XMP information even if it is not listed in these
tables, but other tags are not writable unless added as user-defined
tags in the ExifTool config file. For example, the "pdfx" namespace
doesn't have a predefined set of tag names because it is used to store
application-defined PDF information, so although this information will
be extracted, it is only writable if the corresponding user-defined tags
have been created.
- Phil