Typing convert
on my system (14.04) produces:
The program 'convert' can be found in the following packages:
* imagemagick
* graphicsmagick-imagemagick-compat
Why are there 2 packages providing the same command?
How do I figure out which one should I use?
Follow-up
I used IM with command convert -layers Optimize output*.png output.gif
and this produced a file of size 25903 bytes out of my 222 frames.
For the record the man page for IM convert says:
-layers method optimize or compare image layers
For the sake of the test I uninstalled IM, installed GM and tried the supposedly equivalent command gm convert -delay 10 output*.gif animation.gif
. It created an animated gif file with exactly the same size but different MD5sum.
Again, for the record the man page for GM convert does not mention option -layers
.
This is not a bug in GM, it is just a different way of doing things. I guess I will be sticking with GM since it seems to be more actively maintained.