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July 2007
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2007.07.04 18:25 "Re: BigTIFF extension", by Phil Harvey
Hi Andrew, On 4-Jul-07, at 2:02 PM, Andrew wrote: > I would hope that the design of BigTIFF means that the messages are > not simply "Cannot open. File is corrupt", but rather something > like "file uses an unsupported compression algorithm". As an example, ExifTool 6.92 will print the following error message when presented with a BigTIFF image: "Bad IFD0 directory". This is because there are (unfortunately) TIFF-like files out there that use ID words other the standard TIFF 0x002a (42 decimal), so ExifTool can't veto a TIFF image based only on the TIFF ID word. However, most tools will complain about the invalid ID, so with most tools I would expect an error more like "Not a valid TIFF image", or "Unknown image format". - Phil