Making an animated gif with overlay optimizations from a crop of exported 
frames:

convert -delay 1 -loop 0 *.tga -crop 350x350+500+220 -layers OptimizeTransparency -dither FloydSteinberg  myimage.gif


Making a ping-pong gif:

convert -delay 1 -loop 0 *.tga -reverse *.tga -crop 350x350+500+220 -layers OptimizeTransparency -dither FloydSteinberg  myimage.gif




Making sure it doesn't consume all RAM in the process:

env MAGICK_TMPDIR=/home/jasonrohrer2/temp


convert -limit memory 1024MiB -limit map 1024MiB -delay 1 -loop 0 *.tga -crop 350x350+500+220 -layers OptimizeTransparency -dither FloydSteinberg  myimage.gif

