Legacy ImageMagick Discussions Archive

I am trying to append some 8 bit grayscale tiffs, but i keep getting convert:invalid colormap index

the syntax I am using is:
convert image1.tiff image2.tiff +append output.tiff

I know for a fact that these are 8 bit images, but identify verbose is showing them as 16-bit.

I have seen a few other similar posts, but none seemed to help me solve the problem.

Any thoughts?

Can you share your image so we can try and reproduce your issue?

https://www.imagemagick.org/discourse-s ... f=1&t=9620
Also, always include in your post the ImageMagick version number and 'Q' level (use "convert -version"), and the platform (Windows, Linux, Mac) and API (PHP, Perl, DOS, VB, Shell, etc...) you are using to run ImageMagick. This can save a lot time in solving your problem.

ImageMagick-7.0.3-1-protableQ16-x64

I would share the images, but they are 20+ MB each.

one of the images is located here: https://www.dropbox.com/s/o1l0ys3h1s0rk ... 4.TIF?dl=0

I am using this from windows 10 command line

Thanks for sharing that image. I have moved your post to bugs because it looks like a bug. We are investigating this now.

We found what caused this and this will be fixed in the next version of ImageMagick.

Nice! That is awesome

Any idea when that will be?

Thank you so much!