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I have been running into issues with ImageMagick when trying to extract IPTC data from it. I reported the bug on the ImageMagick discussion forums and have been told this is an issue with libtiff. Running most commands on TIFF files originating from Photoshop CS5 on a Mac appear to result in a warning of: wrong data type 7 for "RichTIFFIPTC"; tag ignored. `TIFFReadDirectory' @ warning/tiff.c/TIFFWarnings/704. including the tag -quiet removes the warning, however when attempting to use identify to extract IPTC data, it is unable to retrieve IPTC data, there is data: [code]$ identify -format "%w|%h|%[IPTC:2:25]|%[IPTC:2:116]" ba-obj-872-0006-pub.tif identify: ba-obj-872-0006-pub.tif: wrong data type 7 for "RichTIFFIPTC"; tag ignored. `TIFFReadDirectory' @ warning/tiff.c/TIFFWarnings/704. 4462|7235||[/code] The IPTC fields can be viewed in Photoshop and Exiftool, however identify cannot read them. [code]$ identify -version Version: ImageMagick 6.6.5-0 2010-11-15 Q16 http://www.imagemagick.org Copyright: Copyright (C) 1999-2010 ImageMagick Studio LLC Features: [/code] A copy of the image in question can be downloaded here (warning: file size is about 92MB) http://kurtimaging.com/ba-obj-872-0006-pub.tif
Created an attachment (id=471) [details] tif sample with RichTIFFIPTC I can reproduce this issue with the current libtiff version 4.0.0beta7 as well, using the attached tif file and following libtiff tool command: tiff2pdf 01568028.tif -o 01568028.pdf Output: TIFFFetchNormalTag: Warning, Incompatible type for "RichTIFFIPTC"; tag ignored.
@wikipedia.org, we are also impacted by this bug, and dozen of TIFF files can not be thumbnailed. See this bug report: https://phabricator.wikimedia.org/T87042 Here a few images impacted by this problem: * https://upload.wikimedia.org/wikipedia/commons/b/b4/CH-NB_-_1802%2C_Zweite_Beschiessung_von_Z%C3%BCrich%2C_12._und_13._September_-_Collection_Gugelmann_-_GS-GUGE-KELLER-H-E-7.tif * https://upload.wikimedia.org/wikipedia/commons/4/4d/CH-NB_-_Aigle%2C_Ch%C3%A2teau_-_Collection_Gugelmann_-_GS-GUGE-LINCK-B-7.tif * https://upload.wikimedia.org/wikipedia/commons/9/9a/CH-NB_-_Bex%2C_von_S%C3%BCden_-_Collection_Gugelmann_-_GS-GUGE-JOYEUX-WEXELBERG-A-1a.tif
Bugzilla is no longer used for tracking libtiff issues. Remaining open tickets, such as this one, have been migrated to the libtiff GitLab instance at https://gitlab.com/libtiff/libtiff/issues . The migrated tickets have their summary prefixed with [BZ#XXXX] where XXXX is the initial Bugzilla issue number.
