I am useing CentOS7 with ImageMagick installed using yum.
The ImageMagick Optimization filter will create blank images for all thumbs.
It seems that the problem comes from the option
..... -level 50% .....
It has to be something like
..... -level x%,y% .....
instead of defining just one %.
It is working perfectly on my another site with CentOS6 and have ImageMagick installed using yum.
But I wonder if we really need -level 50% since I see -auto-level is also there
Last edited by discuss4u (2016-05-09 11:11:51)
If you remove that option, does this fix the problem? I'm a beginner with imagemagick (and i think the better way would have been to use the php imagemagick extension, but that would create another requirement for the script). I've tested the functions on centos 6 and archlinux (which always uses latest stable version of all packages).
Yes, it will be alright when --level -50% is removed