Legacy ImageMagick Discussions Archive

Fwm42, maybe someday when you've experienced the other side for yourself you'll have a clearer perspective.

But FWIW your suggestion fails in exactly the same way--which is hardly surprising, since composite and convert are just symlinks to magick.

If you use IM 7, then things have changed. You cannot use old convert syntax. Try

magick composite png:<(magick -size 200 label:abcdefg png:-) -watermark 15 some-image.jpg > /dev/null

If you want to use the old convert and composite syntax, then you will have to back down to IM 6.


fwm42, I ...

How does it fail on bash?

I just copied and pasted from my Web browser into bash, and it worked (or rather failed) just fine (mallet:501> is the prompt):

mallet:501> composite png:<(convert -size 200 label:abcdefg png:-) -watermark 15 some-image.jpg > /dev/null
composite: insufficient image data ...

Thanks for the pointer and the workaround.

However, let's be clear that it's still a bug. Backwards compatibility has been broken, and existing software that depends on the old feature is failing, so the bug still needs to be fixed.

The composite command used to accept input from pipes. In a recent release, it stopped doing so, probably due to seeking on an input file.

To reproduce, on a LInux system under bash (or probably zsh, though I haven't tested that):

composite png:<(convert -size 200 label:abcdefg png:-) -watermark ...