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2020.03.16 20:19 "Re: [Tiff] Old-Style JPEG Support", by Bob Friesenhahn
- 2020.03.16 20:32 "Re: [Tiff] Old-Style JPEG Support", by Levi Wilson
2020.03.16 20:43 "Re: [Tiff] Old-Style JPEG Support", by Bob Friesenhahn
./tools/tiffcp -c jpeg old-style-jpeg.tif modern-jpeg.tif
TIFFReadDirectory: Warning, Unknown field with tag 32931 (0x80a3) encountered.
TIFFReadDirectory: Warning, Unknown field with tag 32934 (0x80a6) encountered.
OJPEGSetupDecode: Warning, Depreciated and troublesome old-style JPEG compression mode, please convert to new-style JPEG compression and notify vendor of writing software.
OJPEGReadHeaderInfoSecStreamSof: JPEG compressed data indicates unexpected subsampling values.
/sandbox/02f04c98-48c7-4720-bfe7-b7ca2073c052_files: Error, can't read scanline 0.So it sounds like what you'd described below in that this really old JPEG format was just unavailable
This might be a different error since it is a different error message. Perhaps it is an incorrectly specified parameter in the TIFF file.
What does
tiffinfo old-style-jpeg.tif
report?
If the underlying problem can be understood and fixed, then it would be good to fix it.
Bob
--
Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
Public Key, http://www.simplesystems.org/users/bfriesen/public-key.txt