grab-youtube-list

#!/bin/bash -x
yt=https://www.youtube.com
ytl=$1
shift
fmt=${1:-136+140/bestvideo[height<=?720][vcodec^=?avc1]+140/bestvideo[height<=?720][vcodec^=?avc1]+bestaudio/bestvideo+bestaudio/best}
shift
opt=("$@")

youtube-dl "$yt/$ytl" "${opt[@]}" --flat-playlist --dump-json |
jq -r '"\(.id)\t\(.title)"' |
nl -w1 |
while IFS=$'\t' read -r n id title
do
    printf '\n\n-----\n\n\n'
    name=$(printf '%03d %s (%s)' "$n" "${title//[\/:?*]/-}" "$id")
    set -- *[-\(]"$id"[\).][^f]*
    if test -e "$1" && test -z "$2"
    then
        name+=.${1##*.}
        test "$1" = "$name" || mv -v "$1" "$name"
    else
        sleep 10
        stderr=$(
            youtube-dl "$yt/watch?v=$id" \
                --format "$fmt" \
                -o "${name//%/%%}.%(ext)s" \
                3>&1 1>&2 2>&3
        ) || echo "$stderr" | tee "$name.txt"
    fi
done