Group4 Compression

[digcollib]

Hi, All--

I am trying to compress some TIFF files using Group 4 compression. I am on a Mac, with version info:

Version: ImageMagick 7.0.8-11 Q16 x86_64 2018-09-08 https://www.imagemagick.org
Copyright: © 1999-2018 ImageMagick Studio LLC
License: https://www.imagemagick.org/script/license.php
Features: Cipher DPC HDRI Modules
Delegates (built-in): bzlib freetype jng jpeg ltdl lzma png tiff xml zlib

I am using the command

Magick convert file.tif -compress group4 filea.tif

But the files are still showing uncompressed.

When I use the exact same command with 'lzw' instead of group4, it is successful. Any tips?

[dlemstra]

This is a duplicate of viewtopic.php?f=1&t=34680

[digcollib]

Hi, I'm glad to know this is a duplicate, but I noticed there is no fix yet. Is there any estimate as to when this will be fixed?

[dlemstra]

There is a fix (https://github.com/ImageMagick/ImageMagick/issues/1297) and this will be available in the next release.