bin/mov2gif.sh at main · jballands/bin · GitHub

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#!/bin/bash

if [ "$1" == "-h" ] || [ "$1" == "help" ] ; then
  echo "mov2gif [input] [output] [resolution]
Example: mov2gif in.mov out.gif 640x400"
  exit 0
fi

inputFile=$1;
inputFileBasename=$(basename $inputFile .mov);
outputFile=$2;
resolutionInput=$3;
resolution="400x400";

hash ffmpeg 2>/dev/null || { brew update && brew install ffmpeg; }
hash gifsicle 2>/dev/null || { brew update && brew install gifsicle; }
fileInfo=$(ffprobe -v quiet -print_format json -show_streams $inputFile);
width=$( echo $fileInfo | jq -r ".streams[0].width" );
height=$( echo $fileInfo | jq -r ".streams[0].height" );

if [ $resolutionInput ] ; then
  resolution=$resolutionInput;
else
  resolution="${width}x${height}"
fi

if ! [ $outputFile ] ; then
  outputFile="${inputFileBasename}.gif"
fi

echo "converting ${inputFile} to ${outputFile} at $resolution";

ffmpeg -i $inputFile -s $resolution -pix_fmt rgb24 -r 60 -f gif - | gifsicle --optimize=2 --delay=2 > $outputFile