Bash script to generate the file using ImageMagick 6.6.2:

#!/bin/bash

convert -size 64x64 xc:none +antialias -fill grey60 -draw 'rectangle 0,0 63,63'  -fill grey80 \
    -draw 'line 0,0 64,0'   -draw 'line 0,5 64,5'   -draw 'line 0,10 64,10' -draw 'line 0,15 64,15' \
    -draw 'line 0,20 64,20' -draw 'line 0,25 64,25' -draw 'line 0,30 64,30' -draw 'line 0,35 64,35' \
    -draw 'line 0,40 64,40' -draw 'line 0,45 64,45' -draw 'line 0,50 64,50' -draw 'line 0,55 64,55' \
    -draw 'line 0,60 64,60' \
    -draw 'line -5,0 5,64'  \
    -draw 'line 0,0  10,64' -draw 'line 5,0 15,64'  -draw 'line 10,0 20,64' -draw 'line 15,0 25,64' \
    -draw 'line 20,0 30,64' -draw 'line 25,0 35,64' -draw 'line 30,0 40,64' -draw 'line 35,0 45,64' \
    -draw 'line 40,0 50,64' -draw 'line 45,0 55,64' -draw 'line 50,0 60,64' -draw 'line 55,0 65,64' \
    tga:sample1.tga

FRAMES1=""
for i in {90..100}
do
    cjpeg -quality $i sample1.tga > sample1-q$i.jpg
    convert sample1-q$i.jpg -filter point -resize 800% -pointsize 20 -fill black \
        -gravity NorthWest -annotate +5+5 "Q=${i}" -crop 256x256+0+0 png:sample1-q$i.png
    FRAMES1="${FRAMES1} -page +0+0 sample1-q${i}.png"
done

convert -delay 50 -size 256x256 $FRAMES1 -loop 0 output1.gif

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