Glue scripts for cutting together time lapse video

cut-month.sh

#!/bin/bash

set -eu

if [ $# -ne 3 ]; then
    cat >&2 <<EOM
usage: $(basename "$0") YEAR MONTH {high|low|concat-only}
EOM
    exit 1
fi

year="$1"
month="$2"
resolution="$3"

run() {
    echo >&2 "+ $*"
    "$@"
}

run_concat() {
    run ffmpeg-concat "$year-${month}.cat.mp4" "$year/daily/$year-$month"-*.mp4
}

# oneoff for 2012-07-16, where we upsample to 1440x1080
# ffmpeg -f image2 -framerate 15 -pattern_type glob -i '*.jpg' -r 30 -s:v 1440x1080 -vf "drawtext=fontfile=/usr/share/fonts/truetype/roboto/Roboto-Regular.ttf: text='2012-07-16': [email protected]: fontsize=24: x=(w-text_w-8): y=8: borderw=1" -vcodec libx264 out.mp4

export QUIET=1

mkdir -p "$year/daily"

case "$resolution" in
    high)
        export OUTPUT_RESOLUTION=1440x1080
        for day in $(ls "$year/$month"); do
            WATERMARK=$year-$month-$day run ffmpeg-timelapse \
                "$year/$month/$day/*.jpg" \
                "$year/daily/$year-$month-${day}.mp4"
        done
        ;;
    low)
        for day in {01..31}; do
            if [ -z "$(shopt -s nullglob; echo "$year/$month/$year-$month-${day}"_*.jpg)" ]; then
                echo "No files for $year-$month-$day"
                continue
            fi
            WATERMARK=$year-$month-$day run ffmpeg-timelapse \
                "$year/$month/$year-$month-${day}_*.jpg" \
                "$year/daily/$year-$month-${day}.mp4"
        done
        ;;
    concat-only)
        run_concat
        exit
        ;;
    *)
        echo >&2 "should be high/low, not $resolution"
        exit 2
        ;;
esac

run_concat