overlay the discord logo animation over an image

make.sh

echo Creating GIF...
if [ -f "$1" ]; then
	mkdir out
	echo Cropping + resize to 400x400
	convert $1 -trim t1.png
	convert t1.png -resize 400x400 t2.png
	echo Extracting video frames
	ffmpeg -hide_banner -loglevel panic -i connecting.webm out/a%03d.png 
	echo Chroma keying frames
	find out/. -name "*.png" -exec convert "{}" -fuzz 20% -transparent "#000000" "{}" \;
	echo Converting frames to 24bit color
	find out/. -name "*.png" -exec convert {} +dither -colors 256 -background black -alpha background PNG8:{} \;
	echo Compositing logo over input
	find out/. -name "*.png" -exec composite -compose Dst_Over ./t2.png "{}" "{}" \; 
	echo Combining frames into final gif
	convert -delay 2 -dispose previous out/a*.png output.gif
	echo Cleaning up
	rm t2.png
	rm t1.png
	rm -r out
	echo Saved as output.gif
else
	echo ERROR: Input file does not exist, cannot continue.
fi