Rendering TIFF with wrong headers with magick.exe and convert.exe

[sergenikov]

ImageMagick version

7.1.0-52 Q8

Operating system, version and so on

Windows 11

Description

Hi,

I am porting from convert.exe to magick.exe prior to upgrading from 7.1.0-52 Q8 to latest. One file has me stumped. I know the file has wrong headers, but, unfortunately, I still need to handle this "type" of broken.

PS im7-testing $ & "C:\Program Files\ImageMagick-7.1.0-Q8\identify.exe" .\TiffEmptyDirectoryError.tif
.\TiffEmptyDirectoryError.tif TIFF 512x384 512x384+0+0 8-bit sRGB 4302B 0.016u 0:00.007
identify.exe: Incorrect value for "RichTIFFIPTC"; tag ignored. `TIFFFetchNormalTag' @ warning/tiff.c/TIFFWarnings/950.
identify.exe: Failed to allocate memory for to read TIFF directory (0 elements of 12 bytes each). `.\TiffEmptyDirectoryError.tif' @ error/tiff.c/TIFFErrors/597.
identify.exe: Failed to read custom directory at offset 3184. `TIFFReadCustomDirectory' @ error/tiff.c/TIFFErrors/597.
identify.exe: Incorrect value for "RichTIFFIPTC"; tag ignored. `TIFFFetchNormalTag' @ warning/tiff.c/TIFFWarnings/950.

(As a side: this is actually a known issue in OpenImageIO that was fixed years ago.)

For converting this to another format, executing either convert.exe or magick.exe convert will print the error and warning above, but still produce the result. However, using only magick.exe prints the same error, but produces no result.

PS im7-testing $ & "C:\Program Files\ImageMagick-7.1.0-Q8\magick.exe" ".\TiffEmptyDirectoryError.tif[0]" -auto-orient -density 72 -units PixelsPerInch -thumbnail 154x154> -profile ".\IccProfiles\sRGB-IEC61966-2.1.icc" -flatten -quiet .\TiffEmptyDirectoryError.tif.png

magick.exe: Incorrect value for "RichTIFFIPTC"; tag ignored. `TIFFFetchNormalTag' @ warning/tiff.c/TIFFWarnings/950.
magick.exe: Failed to allocate memory for to read TIFF directory (0 elements of 12 bytes each). `.\TiffEmptyDirectoryError.tif' @ error/tiff.c/TIFFErrors/597.
magick.exe: Failed to read custom directory at offset 3184. `TIFFReadCustomDirectory' @ error/tiff.c/TIFFErrors/597.
magick.exe: Incorrect value for "RichTIFFIPTC"; tag ignored. `TIFFFetchNormalTag' @ warning/tiff.c/TIFFWarnings/950.

Is error handling different between magick.exe convert and magick.exe or does my command need to change more to adhere to the new magick.exe format, and I am not just not doing it right? (I already moved things around to fit to the new format.)

Thank you in advance!

TiffEmptyDirectoryError.zip

[snibgo]

I don't have a version of IM (v6 or v7) that can read your TiffEmptyDirectoryError.tif file.

tiffinfo also complains:

TIFFFetchDirectory: Sanity check on directory count failed, zero tag directories not supported.
TIFFReadCustomDirectory: Failed to read custom directory at offset 3184.

Gimp can read it. So I suggest using that, or some other program, to save it in a valid file.