This is a simple script using ffmpeg to convert .mov files to .gif

mov_to_gif

#! /bin/bash
#############################################################################
# Author: Travis Hathaway                                                   #
#                                                                           #
# Description:                                                              #
#   This is a simple script used to transform a .mov file to a .gif file    #
#                                                                           #
# Example:                                                                  #
#   mov_to_gif <mov_file> <start_time:seconds> <duration:seconds>           #
#   mov_to_gif your_movie.mov 5 2.5                                         #
#############################################################################


mov_file=$1
gif_file=$(echo $mov_file | sed -e 's/.mov$/.gif/')
start_time=$2
duration=$3

ffmpeg -ss "$2" -t "$3" -i "$mov_file" -filter_complex "[0:v] fps=12,scale=480:-1,split [a][b];[a] palettegen [p];[b][p] paletteuse" "$gif_file"