error when creating animated GIF

[zenjim]

Hi,

I used the procedure in the following url to create an animated GIF from png images created in POV-Ray:
http://jacobsalmela.com/2015/11/02/make ... ght-click/

it makes a macOS workflow that allows you to select a group of image files, right click on them, then click 'Make Animated GIF'.
It uses the following command:
/usr/local/bin/convert -delay 20 -loop 0 "$@" ~/Desktop/animated.gif

but when I run it, it gives the following error:

The action “Run Shell Script” encountered an error: “/Users/jim/Desktop/POVRay files/camera201.png: line 1: $'\211PNG\r': command not found
/Users/jim/Desktop/POVRay files/camera201.png: line 2: $'\032': command not found
/Users/jim/Desktop/POVRay files/camera201.png: line 3: $'\rIHDR\004\003\b\0025\330\202Z\004gAMA\261\217\v\374a\005\001sRGB\256\316\034\351\003sBIT\b\b\b\333\341O\340': command not found
/Users/jim/Desktop/POVRay files/camera201.png: line 3: $'1\256\272\325\001#tEXtSoftwarePOV-Ray': command not found
/Users/jim/Desktop/POVRay files/camera201.png: line 4: Platform:: command not found
/Users/jim/Desktop/POVRay files/camera201.png: line 5: syntax error near unexpected token `('
/Users/jim/Desktop/POVRay files/camera201.png: line 5: `Compiler: 4.2.1 Compatible Apple LLVM 9.1.0 (clang-902.0.39.2)'”


any ideas what's going on and how to fix it?

thanks!

[zenjim]

this is odd. I tried it at the command line using the following:
$ /usr/local/bin/convert -delay 20 0loop 0 ~/Desktop/POVRay\ files/camera2*.png ~/Desktop/animated.gif

and it got the following error but still created the animated.gif file:
convert: unable to open image '0loop': No such file or directory @ error/blob.c/OpenBlob/3497.
convert: no decode delegate for this image format `' @ error/constitute.c/ReadImage/556.
convert: unable to open image '0': No such file or directory @ error/blob.c/OpenBlob/3497.
convert: unable to open image '0': No such file or directory @ error/blob.c/OpenBlob/3497.
convert: no decode delegate for this image format `' @ error/constitute.c/ReadImage/556.

[fmw42]

You have "0loop 0". Why is there a "0" at the beginning of that? It should be -loop 0

[zenjim]

typo on my part. I just corrected it and tried again and it works fine.

any insight as to why my Automator workflow in my original post isn't working?

[zenjim]

I fixed it! I didn't see that I had to specify the Shell in the Automator workflow. It didn't say to do that in the instructions but did have it in the final example screenshot. problem solved and works great!