Error "Warning: Duplicate IPTC-NAA tag in IFD0"

[Gnarlodious]

I have about 50 scanned images out of 1500 that send error "Warning: Duplicate IPTC-NAA tag in IFD0". Is there a way to repair these files? Searched Google but nothing on this error.

[Phil Harvey]

I'd need a sample for testing to be sure, but you could try this:

exiftool -iptc:all= -tagsfromfile @ -iptc:all DIR

I'm not sure if this will work.  If not, doing it in 2 steps should work:

exiftool -iptc:all= -o temp DIR
exiftool -tagsfromfile DIR/%f.%e -iptc:all temp

After this, the files in the "temp" directory should be OK.

- Phil

[Gnarlodious]

Thanks, the first one worked. I added  -overwrite_original and lost no data. What an incredibly utilitarian peice of software you have written!

[Gnarlodious]

One more question. Is there a way to test the integrity of metadata without writing to the file?

[Phil Harvey]

ExifTool is not designed as a validation tool.  It reports a number of errors when reading, and more when writing, but it doesn't report everything.

- Phil