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From: Andrey Kiselev <dron@ak4719.spb.edu>
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Subject: Re: [Tiff] "Unknown field with tag" error
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Status:   

On Fri, Dec 02, 2005 at 10:39:01AM -0800, John Engelke wrote:
> I run the following on Mandrake 2006.0 with ImageMagick 6.2.4
> installed (though I think that is irrelevant) and what I believe
> (don't quite know how to tell yet) is libtiff 3.6.1:
> 
> tiffsplit foo.tif sp
> 
> I get the following errors:
> 
> TIFFReadDirectory: Warning, foo.tif: wrong data type 1 for
> "XMLPacket"; tag ignored.
> TIFFReadDirectory: Warning, two.tif: unknown field with tag 34665
> (0x8769) encountered.

John,

These are not errors, but just warnings (as it is stated in the message
itself!). I am not sure why you got the first message. What is libtiff
version installed on your system? The second one is just a signal that
the file contains field that is not known to libtiff and can not be
interpreted.

> The split I was trying to accomplish (separating layers from a
> Photoshop TIF file) does not work. The file works fine in Photoshop.

Whay do you think you can split the layered TIFF file from Photoshop?
I don't know how the information about layers is stored in a TIFF file
and I am not sure that ImageMagick can work with that info.

> P.S. I try the following from ImageMagick which crashes with errors:
> 
> identify -verbose foo.tif
> 
> and seemingly produces a similar error then a stack trace. I believe
> that ImageMagick also uses libtiff.

Could you send results of tiffinfo/tiffdump commands for that file?

Regards,
Andrey

-- 
Andrey V. Kiselev
Home phone:  +7 812 5970603  ICQ# 26871517
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