Dave, 

Thanks for the response... I tried this and it sort of works with a warning about IPTC, but that's an effect of the data in the TIFF. Here's some results of my experimentation and an example of what I've tried with exiftool.

exiftool -xmp test.tif -b > xmp.xml
exiftool '-xmp<=xmp.xml' test.jp2

No namespace for XMP
Warning: Can't write XMP:XMP (namespace unknown) - test.jp2
    0 image files updated
    1 image files unchanged

I must be doing something wrong, but I can't see anything obviously wrong in the XMP file. Or perhaps my technique is simply invalid. I'll admit I'm a newbie when it comes to exiftool.

--Joel

On Mar 23, 2011, at 10:31 AM, Dave Rice wrote:

> On Mar 23, 2011, at 10:26 AM, Dave Rice wrote:
> 
>> Hi Joel,
>> 
>> On Mar 23, 2011, at 9:45 AM, Richard, Joel M wrote:
>> 
>>> Morning, all! 
>>> 
>>> I thought I'd crowdsource this question. 8+ hours of beating up on this and I haven't found a good solution.
>>> 
>>> We have some software that processes the scanned pages of a book. They come to me as TIFF and I am converting to JP2 in order to upload to the Internet Archive. The trouble is that I can't find a reliable piece of code or a process to add XMP metadata to the JP2. (FWIW, we're using the Jasper library)
>>> 
>>> - exiftool doesn't seem to be working either.
>> 
>> exiftool works for me. Can you send the command you're testing?
>> If I run:
>> exiftool -tagsfromfile source.tiff output.jp2
>> then I do get the XMP copied from the tiff to the jp2.
> 
> Although a problem with this approach is that now an XMP that describes a tiff is embedded in a jp2. Perhaps you could parse the source XMP for selects and then use exiftool to write relevant tags to the output file.
> 
>> Best Regards
>> 
>> Dave Rice
>> avpreserve.com