makeorrery_movie.sh

#!/bin/bash
# first argument is directory with input/output files
# second argument is the name of the output gif (without the directory)
# third argument is the frame rate (fps)
# pix_fmt is used to be compatible with apple devices.
# make the mp4 using a particular frame rate.
ffmpeg -framerate $3 -i $1fig%04d.png -c:v libx264 -pix_fmt yuv420p -crf 18 $1$2