update iptc title and subject

[aruns911]

I'm trying to update the iptc title and subject from the headline field. I cant seem to get the format quite right
exiftool.exe "-iptc:Title<Headline"  IMG_0253.JPG
Warning: Tag 'iptc:Title' does not exist - IMG_0253.JPG
Warning: No writable tags set from IMG_0253.JPG
    0 image files updated
    1 image files unchanged

Doing this works:
exiftool.exe "-Title<Headline"  IMG_0253.JPG

Many thanks.

[Alan Clifford]

Searching Phil's documentation, http://www.exiftool.org/TagNames/IPTC.html there is no iptc title.  There is an xmp title.


edit  ...

Same for subject.  There is an xmp subject.

[Phil Harvey]

This will be an ongoing source of confusion.

IPTC changed from the IIM format to XMP a while back.  ExifTool (unfortunately) called the IPTC IMM "IPTC", whereas now Adobe is writing IPTC in XMP format, and calling this "IPTC".

Confusing.

- Phil