Bridge: Invalid Tiff-files reported by "Jhove" application after editing metadata in Bridge CS5.1

  • 1
  • Problem
  • Updated 6 years ago
  • Not a Problem
  • (Edited)
There's a problem with TIFF-files edited and saved by Adobe Bridge CS5.1.
We validate TIFF-Files with the tool "Jhove" developed by JSTOR and the Harvard University Library (see http://jhove.sourceforge.net/). After editing or adding Metadata to TIFF-Files via Adobe Bridge 5.1, Jhove reports the following problem: "Type mismatch for tag 700; expecting 1, saw 7". Jhove declares that theses files are "not well-formed", that means that they are not conform to Tiff 6.0 specification!
This problem only occurs when editing the files in Bridge, not in another metadata-editing tool. Also in Photoshop CS 5.1, the files remain well-formed.
Photo of Miriam Eberlein

Miriam Eberlein

  • 4 Posts
  • 1 Reply Like

Posted 6 years ago

  • 1
Photo of David Franzen

David Franzen, Employee

  • 96 Posts
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Official Response
The "Jhove" tool is probably in error. Tag number 700 is the standard tag number for the XMP IFD in a TIFF. I'm guessing that the 1 and 7 numbers in the error message refer to the type field in that IFD, where the TIFF specification defines 1 as indicating the data type "BYTE" and 7 "UNKNOWN". If your refer to Part 3 of the XMP specification, table 13 on page 19, you'll see both are valid: "The field type should be UNDEFINED (7) or BYTE (1)," so this tool should support both values.

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-David