How can I create an empty (transparent) PNG containing 24 bit color channels with ImageMagick? The obvious one
convert -size 1920x1080 xc:transparent blank.png
will create an 1bit b/w image with alpha channel. Adding some options like
convert -size 1920x1080 xc:transparent -colorspace rgb -type truecolor blank.png
which work for .jpg format, still gains the same 1bit result. Any ideas?