How to setup nconvert for use on MacOS Catalina [Solved]

[mgegersdorfer]

I've been at it for a week now. I can't figure it out. what am I doing wrong?

I tried the below before & after adding environment variable.
environment methods used were from the following links. used "env" after restarting Terminal to confirm. All methods worked for me.
https://support.apple.com/en-au/guide/t ... 006f8f/mac
https://stackoverflow.com/questions/655 ... s-catalina
https://apple.stackexchange.com/questio ... s-catalina
set my environment variables as follows;
echo 'export nconvert=/Users/matthew/NConvert/nconvert' >> ~/.zshev
echo 'export nconvert=/Users/matthew/NConvert/' >> ~/.zshev

I've tried the following.

• nconvert -wmopacity 7 -wmflag center -wmsize 98 -wmfile "/Users/uName/Desktop/Watermark/Watermark.png" "/Users/uName/Desktop/Test/Web/TTK_VW06 b.jpg"

• ./nconvert -wmopacity 7 -wmflag center -wmsize 98 -wmfile "/Users/uName/Desktop/Watermark/Watermark.png" "/Users/uName/Desktop/Test/Web/TTK_VW06 b.jpg"

• "/Users/uName/NConvert/nconvert" -wmopacity 7 -wmflag center -wmsize 98 -wmfile "/Users/uName/Desktop/Watermark/Watermark.png" "/Users/uName/Desktop/Test/Web/TTK_VW06 b.jpg"

I keep getting the error message:
"zsh: command not found: nconvert"

I'm more a graphics designer with some coding knowledge. What I deduce is that the "zsh" shell, does not recognize the command "nconvert". probably need to set "nconvert" so it can recognize it as a command. Even though the environment variable is set it most likely needs to be set some place else or there is another way to set environment variables for command line apps.

[mgegersdorfer]

This command Is correct however I needed to "CD" into the dir where "nconvert" is located for it to work.

• ./nconvert -wmopacity 7 -wmflag center -wmsize 98 -wmfile "/Users/uName/Desktop/Watermark/Watermark.png" "/Users/uName/Desktop/Test/Web/TTK_VW06 b.jpg"

I now see what looks like confirmation that nconvert is receiving input.

** NCONVERT v7.136 (c) 1991-2022 Pierre-E Gougelet (Jan 26 2023/09:46:46) **
Version for MacOS X (All rights reserved)
** This is freeware software (for non-commercial use)

Unfortunately I now get the following error message;
my_error_exit...<JPEG parameter struct mismatch: library thinks size is 632, caller expects 600>
my_error_exit...<JPEG parameter struct mismatch: library thinks size is 632, caller expects 600>
my_error_exit...<JPEG parameter struct mismatch: library thinks size is 632, caller expects 600>
my_error_exit...<JPEG parameter struct mismatch: library thinks size is 632, caller expects 600>
Error: Don't know how to read this picture (/Users/uName/Desktop/Test/Web/TTK_VW06 b.jpg)

This is a bit of an annoyance because I need to pass this code from a script to "nconvert"

I now have two questions:

• How do I resolve the above error?

• How do I pass this command from a script without needing to run CD first or how do I implement CD in one pass together with the nconvert command?

[cday]

You'll probably have to wait for Pierre for an answer, but have you tried a simpler action than watermark, and maybe a different source file format?

[mgegersdorfer]

It worked for a tif image, no problem. It came back with "OK" and a photo with watermark is produced.

• nconvert -wmopacity 7 -wmflag center -wmsize 95 -wmfile "/Users/uName/Desktop/Watermark/Watermark.png" "/Users/uName/Desktop/Test/Print/TTK-AL01 a.tif"

The command below produces the same error message as before(I think maybe the jpeg plugin aint being referenced);

• nconvert -wmopacity 7 -wmflag center -wmsize 95 -wmfile "/Users/matthew/Desktop/Watermark/Watermark.png" "/Users/matthew/Desktop/Test/Web/TTK-AL01 a.jpg"

• nconvert -ratio -rtype lanczos -resize 50% 50% "/Users/matthew/Desktop/Test/Web/TTK-AL01 a.jpg"

I'm using the standalone "nconvert" copied into "/Applications/NConvert". I do have XnViewMP installed but was not able to find nconvert. I also tried XnConvert was a failed attempt.

[cday]

You could maybe report the XnConvert bug with steps to reproduce and if possible test file(s) as that should be easy to describe clearly, and also cross-reference this thread.

[mgegersdorfer]

RESOLVED! How do I pass this command from a script without needing to run CD first or how do I implement CD in one pass together with the nconvert command?

I realized I incorrectly declared the environment variable earlier.
I was declaring it as follows. I did not add it to the "PATH", which I was supposed to do. I was overthinking it!
echo 'export nconvert=/Users/matthew/NConvert/' >> ~/.zshev

The following is the correct procedure:

• Download the standalone "nconvert" and extract it.

• Copy/Move the "NConvert" folder to a directory of your choice(I used "/Applications")

• Set the environment variable as follows(changing "/Applications/NConvert" to the folder of your choice. keep the "PATH" or it will not work):
  echo 'export PATH=/Applications/NConvert' >> ~/.zshenv

I can now use the "nconvert", without "CD"ing to the dir and without "./" at the beginning of "nconvert"

[cday]

How do I pass this command from a script without needing to run CD first or how do I implement CD in one pass together with the nconvert command?

I am sorry, I am not a Mac user, only very basic Windows scripting with an aspiration when I have time to be able to script in my now much-preferred Linux!

[mgegersdorfer]

You could maybe report the XnConvert bug with steps to reproduce and if possible test file(s) as that should be easy to describe clearly, and also cross-reference this thread.

This is not an XnConvert bug. I don't have this issue with XnConvert nor XnViewMP. Did you mean I should report this bug over in a another thread because nconvert does not have a dedicated Bug Report Thread? If that was the case, then did you mean the Bug Report thread for XnViewMP thread? because I don't see a dedicated Bug Report thread for XnConvert either.

[mgegersdorfer]

How do I pass this command from a script without needing to run CD first or how do I implement CD in one pass together with the nconvert command?

I am sorry, I am not a Mac user, only very basic Windows scripting with an aspiration when I have time to be able to script in my now much-preferred Linux!

Not to worry I resolved this issue