#! /bin/sh
# This script downloads YouTube videos for archival in a high-compatibility
# format with embedded metadata using https://github.com/yt-dlp/yt-dlp/.

set -eu

log_url=0
max_height=1080

while :; do
    case "$1" in
    -l | --log)
        log_url=1
        shift
        ;;

    -m | --max-height)
        max_height=$2
        shift 2
        ;;

    *)
        break
        ;;
    esac
done

yt-dlp \
    --add-metadata \
    --embed-chapters \
    --embed-subs \
    --embed-thumbnail \
    --format "bestvideo[vcodec*=avc1][height<=$max_height]+bestaudio[ext=m4a]" \
    --sub-langs en \
    --write-auto-subs \
    "$@" \
    ;

if [ "$log_url" -eq 1 ]; then
    for url in "$@"; do
        printf '%s\n' "$url" >> urls.txt
    done
fi