Help changing an output filename

[PauloEgidio]

ImageMagick version

7

Operating system, version and so on

Windows

Description

I am using negate to invert colors: "magick convert image1.png -channel RGB -negate image1_white.png". It works perfectly.
But I want to do it batch and
magick convert *.png -set filename:fname %t -channel RGB -negate "%[filename:fname]_white.png"
gives an error 3359.
can someone help me please or kindly point me to an output filename documentation page? with *.something as input and changing filenames?
Thanks!

[fmw42]

In IM 7, use magick, not magick convert. Doing that works for me. You were using IM 6 syntax by adding convert. You need IM 7 syntax. So remove "convert"

Or you could use magick mogrify

change directory to your_image_directory
magick mogrify -format png -path your_output_directory -negate -channel rgb -negate *.png

See https://imagemagick.org/Usage/basics/#mogrify

[PauloEgidio]

Work perfectly! Many thanks!

[fmw42]

See changes in the above.