Gifsicle wrapper, bash - Convert your stuff!

testicle.sh

#!/bin/bash
#     It has a funny name, but a valuable purpose.  It will convert movies to optimized gif images of an extremely small size
#     while preserving a decent amount of their quality.  It uses the standard stream and DOES NOT create any junk on the
#     filesystem, making it extremely fast!
#
# Dependencies required:  gifsicle, ffmpeg
# By: HeavyPaws "Heavy H. Paws" <loopy@lupinedream.com>
# 
# Example use:
#     testicle.sh my_lewd_movie.webm my_lewd_animation.gif
filters="fps=45,scale=640:-1:flags=lanczos"
input=$1
output=$2
echo -ne "$input -> $output ... "
gifsicle -O3 --colors 256 <(capture /dev/stdout 2>/dev/null | ffmpeg -y -i $input -i <(ffmpeg -y -i $input -vf "$filters,palettegen" -f apng - 2>/dev/null) -lavfi "$filters [x]; [x][1:v] paletteuse" -f gif - 2>/dev/null) >$output 2>/dev/null  &

pid=$! ; i=0
while ps -a | awk '{print $1}' | grep -q "${pid}"
do
    c=`expr ${i} % 4`
    case ${c} in
       0) echo -ne "/" ;;
       1) echo -ne "-" ;;
       2) echo -ne "\\" ;;
       3) echo -ne "|" ;;
    esac
    i=`expr ${i} + 1`
    sleep 1
    echo -ne "\b\c"
done

echo -ne "\r\n"
wait ${pid}
ret=$?
exit ${ret}