适用于ExifTool的正确cmd行，用于pdf元标记

Question

I'm having issues getting exiftools to write custom meta tags for my pdf files. In MacOS terminal with exiftools installed. Here's a sample command.

exiftool -overwrite_original -config 
new.config -XMP::pdfx:document_id=”7A 2017 091 d” -XMP::pdfx:description=”Booklet on stuff and more stuff” pdf_files/7A_2017_091_d.pdf

Here's the config lines:

#user-defined pdfs
%Image::ExifTool::UserDefined = (
    'Image::ExifTool::XMP::pdfx' => {
        document_id => { },
        description => { },
    },
);
1;  #end

All I get back is:

Warning: Tag 'XMP::pdfx:Document_id' is not defined
Warning: Tag 'XMP::pdfx:Description' is not defined
Nothing to do.

What am I doing wrong?

Answer 1

This is the config file that worked for me:

#user-defined pdfs
%Image::ExifTool::UserDefined = (
    'Image::ExifTool::XMP::pdfx' => {
        document_id => { Writable => 'string', },
        description => { Writable => 'string',},
    },
);
1;  #end  

And the command line with results (you don't need the config file to read XMP tags, just write)

C:\\>exiftool -config temp.txt -xmp-pdfx:document_id="test" -xmp-pdfx:description="Description Test" y:/!temp/test.pdf
1 image files updated

C:\\>exiftool -xmp-pdfx:document_id -xmp-pdfx:description y:/!temp/test.pdf
Document id : test
Description : Description Test