gource -1280x1280 \
    --stop-at-end \
    --seconds-per-day 2 \
    -a 1 \
    -o - \
    | ffmpeg -y \
    -r 60 \
    -f image2pipe \
    -vcodec ppm \
    -i - \
    -vcodec libx264 \
    -preset fast \
    -crf 18 \
    -threads 0 \
    -bf 0 \
    -pix_fmt yuv420p \
    -movflags \
    +faststart \
    output.mp4