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July 2004
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2004.07.22 20:31 "Re: JPEG Compression Support", by Fernando Loygorri
> Unfortunately the 'old-style' JPEG compression is not supported by the > upstream libtiff developers. You have the two choices: > > 1. Dig into the problem yourself (and contribute the patches > back to us ;-) > 2. Force your users to drop out their software producing old style > JPEGs and switch them to the latest TIFF standard. More unfortunately, the latest TIFF standard (6.0, June 3, 1992) defines this so-called "old style JPEG". And, yes, I'm aware of the technical note number 2 of March 17, 1995, but it can be argued that being titled "DRAFT TIFF Technical Note #2" hardly makes it part of any standard. Considering the number of tools out there that can handle TIFFs with compression 6, I don't understand why libtiff is different. Along with the 4MB limit, this is, in my view, the most important reason to update the standard. -- Fernando Loygorri