[Digikam-devel] [Bug 130525] Saving large (>5M) jpg's result in corrupt file

Andreas Huggel ahuggel at gmx.net
Sat Jul 22 04:35:34 BST 2006

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------- Additional Comments From ahuggel gmx net  2006-07-22 05:35 -------
This is fixed in Exiv2 rev 847. Exiv2 now throws Exiv2::Error(37) if any JPEG APP segment is >64k but it allows to work with metadata which is larger.

Please check the use of Exiv2::Photoshop::locateIptcIrb and locateIrb in digikam: the signatures of these members were fixed to use uint32_t from uint16_t

#26 : I also can't find any evidence that the size is limited in TIFF format.

Since IPTC is first packed into a Photoshop IRB (specified by Adobe) before it is written to the JPEG APP segment, I am wondering what Adobe applications do in this situation. The available Adobe specs are not clear.

So if anyone can test with Photoshop or similar Adobe app, I'd be interested to hear what happens if you try to save IPTC data >64k to a JPEG image, in particular is it split into two APP13 segments?


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