Produces a video of the evolution of a git repository using gource (see https://gource.io/).

gource.sh

#!/bin/zsh

if (( !($# == 3) ))
then
    echo "Usage:"
    echo $0 "<ffmpeg preset> <output file base name> <seconds per day>"
    exit 1
fi

"""
ffmpeg_preset
---

ultrafast
superfast
veryfast
faster
fast
medium – default preset
slow
slower
veryslow
placebo
"""

ffmpeg_preset=$1
output_file=$2
seconds_per_day=$3

git log --pretty=format:"%ae|%an" | sort | uniq | while read -r line
do parts=("${(s/|/)line}")
done

gource --seconds-per-day $seconds_per_day --hide filenames,mouse --key -1280x720 -o - | ffmpeg -y -r 60 -f image2pipe -vcodec ppm -i - -vcodec libx264 -preset ${ffmpeg_preset} -pix_fmt yuv420p -crf 1 -threads 0 -bf 0 ${output_file}.mp4