XnView Software

Sorry, I wrote that poorly, the
Using alpha_mode = 1
is what is returned to STDOUT when I run
$ nconvert -quiet -overwrite -out jxr -o stdout path/to/file.png

That output only gets returned to STDOUT when I try to convert a PNG to JXR. JPG to JXR and TIFF to JXR create a file named stdout. In ...

I am able to output to STDOUT with conversions to JPEG and TIFF, but I can't seem to do it for JXR. For example, the following result in bitstreams in STDOUT:
$ nconvert -quiet -overwrite -out jpeg -o stdout path/to/file.png
$ nconvert -quiet -overwrite -out tiff -o stdout path/to/file.png ...