Author Topic: "Suspicious IFD1 offset": meaning?  (Read 1749 times)

terrypin

  • Full Member
  • ***
  • Posts: 66
"Suspicious IFD1 offset": meaning?
« on: March 27, 2013, 07:13:40 AM »
I used this to copy Comment to XPComment:
exiftool "-comment>XPComment" -r "C:\Docs\My Pictures\PHOTOS\Tests"

All files except one ended up correctly with an XPComment tag. After several repetitions I noticed a brief message from ExifTool about that file, starting ""Suspicious IFD1 offset..".

The references I've found from googling are outside my comfort zone. What in simple terms does it mean please, and what if anythng should/could I do about it? The JPG in question is just one of hundreds taken around that time.

As it seems possibly related to thumbnails (?), I did try using Refresh Thumbnails in XP Explorer, but that made no difference.

--
Terry, East Grinstead, UK

Phil Harvey

  • ExifTool Author
  • Administrator
  • ExifTool Freak
  • *****
  • Posts: 14759
    • ExifTool Home Page
Re: "Suspicious IFD1 offset": meaning?
« Reply #1 on: March 27, 2013, 07:46:44 AM »
Hi Terry,

This warning means that the thumbnail image in IFD1 is likely corrupted.  I'm guessing this is not the thumbnail that you refreshed with XP Explorer.

- Phil
...where DIR is the name of a directory/folder containing the images.  On Mac/Linux, use single quotes (') instead of double quotes (") around arguments containing a dollar sign ($).

terrypin

  • Full Member
  • ***
  • Posts: 66
Re: "Suspicious IFD1 offset": meaning?
« Reply #2 on: March 27, 2013, 09:16:52 AM »
Thanks Phil. Whatever corruption the thumbnail has, it's resistant to Refresh Thumbnail. I refreshed the entire folder.

--
Terry, East Grinstead, UK