TIF-File does not open

[rmadner]

System information:

• Windows OS version: 1607 Build 14393.4704 64-bit
• ImageGlass version: 8.3.11.21

To Reproduce

Steps to reproduce the behavior:

1. open File from explorer

Actual behavior:

ImageGlass says "loading", Message disappears, no image opened, no error message
other TIF-Files can be opened without problems

Expected behavior:

image opened or at least an error message

Screenshots:

Additional context:

File cannot be uploaded, TIF is not supported...

[fire-eggs]

File cannot be uploaded, TIF is not supported...

Zip the TIF file, then upload the zip.

[rmadner]

imageglass.zip
Inside are 3 examples, that do not work with ImageGlass, as well as a screenshot.

Any idea, what's the cause?

[rmadner]

In the preview/thumbnails it can be displayed, but it's impossible to get it displayed in ImageGlass. Seems that it's been opened, because you can click "open with" or "edit image" and it is displayed e.g. in paint. This is my workaround, but I am not happy with it.

[fire-eggs]

MS Photos can't view "WelcomeFax.tif" either. Here is the output from ImageMagick:

E:\temp\ig_1181>magick identify WelcomeFax.tif
identify: Not a TIFF or MDI file, bad magic number 17220 (0x4344). `WelcomeFax.tif' @ error/tiff.c/TIFFErrors/599.

E:\temp\ig_1181>magick identify Muster.tif
identify: Unknown field with tag 1 (0x1) encountered. `TIFFReadDirectory' @ warning/tiff.c/TIFFWarnings/963.
identify: Unknown field with tag 32928 (0x80a0) encountered. `TIFFReadDirectory' @ warning/tiff.c/TIFFWarnings/963.
identify: ASCII value for tag "DocumentName" does not end in null byte. `TIFFFetchNormalTag' @ warning/tiff.c/TIFFWarnings/963.
identify: Muster.tif: Null count for "Tag 32928" (type 4, writecount -3, passcount 1). `_TIFFVSetField' @ error/tiff.c/TIFFErrors/599.

So "WelcomeFax.tif" isn't a TIFF file at all; I see the first three characters in the file are "DCS", perhaps it is a dcs file? Anyway, whatever it is, it's not supported by ImageMagick, Windows, or ImageGlass ...

It's possible that ImageGlass would be happy with "Muster.tif" if the errors above were fixed. It is annoying that the thumbnail can be seen, but not the image. I'll try to dig further into that.

[rmadner]

Well, "WelcomeFax.tif" seems to be anything, but not a TIFF, that's for sure.

I did some searches about muster.tif on myself. Strange: one dcs-converter says it must be TIFF, others take it an convert it to any image-type you like...

Did you find out anything new so far?

[rmadner]

Sorry if I am being inconvenient:

MS Photos can't view "WelcomeFax.tif" either. Here is the output from ImageMagick:

E:\temp\ig_1181>magick identify WelcomeFax.tif
identify: Not a TIFF or MDI file, bad magic number 17220 (0x4344). `WelcomeFax.tif' @ error/tiff.c/TIFFErrors/599.

E:\temp\ig_1181>magick identify Muster.tif
identify: Unknown field with tag 1 (0x1) encountered. `TIFFReadDirectory' @ warning/tiff.c/TIFFWarnings/963.
identify: Unknown field with tag 32928 (0x80a0) encountered. `TIFFReadDirectory' @ warning/tiff.c/TIFFWarnings/963.
identify: ASCII value for tag "DocumentName" does not end in null byte. `TIFFFetchNormalTag' @ warning/tiff.c/TIFFWarnings/963.
identify: Muster.tif: Null count for "Tag 32928" (type 4, writecount -3, passcount 1). `_TIFFVSetField' @ error/tiff.c/TIFFErrors/599.

So "WelcomeFax.tif" isn't a TIFF file at all; I see the first three characters in the file are "DCS", perhaps it is a dcs file? Anyway, whatever it is, it's not supported by ImageMagick, Windows, or ImageGlass ...

It's possible that ImageGlass would be happy with "Muster.tif" if the errors above were fixed. It is annoying that the thumbnail can be seen, but not the image. I'll try to dig further into that.

Sorry if I am being inconvenient - do you see this as a bug and try to fix it?

[d2phap]

Hi @rmadner
The issue is open means I will still look into it. It depends on the difficulty, you can see there are issues remain for months or years, too.

As @fire-eggs mentioned above, ImageGlass uses Magick.NET to read and decode image files. We will need to contact to ImageMagick forks,...

[rmadner]

Hi @d2phap
Allright, I understand now... i did not see, that the problem lies in another piece of software, that you can't control. I try to be patient and hope that these problems don't occur too often (ImageGlass will be used by about 2500 Users), until you have a solution.

Thanks for the quick answer!

[d2phap]

ImageGlass 9.0 beta 3 fixes the issue of the TIFF format with invalid tag 32928 (file Muster.tif).

[d2phap]

ImageGlass 8.8 fixes the issue of the TIFF format with invalid tag 32928 (file Muster.tif).