Script to generate an mp4 video file from still images

make_animation.sh

#!/bin/bash
# generate mp4 animation from still images with ffmpeg.

if [ $# != 2 ]; then
    echo "Usage: $(basename "$0") \"image/file/pattern_*.png\" output.mp4"
    exit -1
fi

pattern=$1
outputfile=$2

ffmpeg -y -r 25 -pattern_type glob -i "$pattern" \
    -r 25 -c:v libx264 -preset slow -crf 5 \
    -vf "scale=ceil(iw/3)*2:ceil(ih/3)*2" \
    -pix_fmt yuv420p \
    $outputfile