yt-mix-v2.sh

#!/usr/bin/env bash
#A script for playing YouTube playlists
#Recommended mpv plugins: https://github.com/hoyon/mpv-mpris, https://github.com/cniw/mpv-discordRPC

trap "echo Exiting...; kill -s KILL 0; exit" SIGINT SIGTERM
trap "exit" SIGKILL

browser=$(xdg-mime query default application/x-extension-html)
browser=${browser%%.desktop}
browser=${browser:-firefox}

if ! [ -e headers.txt ]; then touch headers.txt; fi
while read -r header; do
    [[ "$header" =~ ^([A-Za-z-]+)\:\ (.+) ]]
    variable=${BASH_REMATCH[1]}
    value=${BASH_REMATCH[2]}
    if [ -n "$variable" ] && ! [[ "$variable" =~ (Host|Accept-Encoding) ]]; then headers="$headers --add-header $variable:\"$value\""; fi
done < headers.txt #Right click on a network request and click "Copy Request Headers"

echo "Input YouTube playlist link: "
read -r link
[[ "$link" =~ ^https?\:\/\/(www|m)\.youtube\.com\/watch\?v\=[A-Za-z0-9_-]+\&list\=([A-Za-z0-9_-]+) ]]
if [ -n "${BASH_REMATCH[2]}" ]; then
    id="${BASH_REMATCH[2]}"
else 
    echo "Error: Invalid link!"
    exit 1
fi

if ! [ -s "$id.json" ]; then 
    echo "Fetching playlist JSON from YouTube..."
    eval yt-dlp -j --flat-playlist --cookies-from-browser "$browser" -- "\"$link\"" > "$id.json"
fi

echo "Parsing JSON..."
jq -r '.webpage_url' "$id.json" > "$id.txt"
if [ "$?" -ne 0 ]; then
    echo "Error: Invalid JSON!"
    rm "$id.json"
    exit 1
fi

i=0
while read -r link; do
    links[i]="$link"
    i=$((i+1))
done < "$id.txt"

#Workaround for a HTTP 403 issue - don't use browser cookies, 16.01.2025

echo Running yt-dlp --embed-metadata --embed-thumbnail --merge-output-format mkv --sponsorblock-remove sponsor,intro,music_offtopic "$headers" -o "\"%(id)s.%(ext)s\"" -- "\"${links[0]}\""
eval yt-dlp --embed-metadata --embed-thumbnail --merge-output-format mkv --sponsorblock-remove sponsor,intro,music_offtopic "$headers" -o "\"%(id)s.%(ext)s\"" -- "\"${links[0]}\""
for ((i=1; i<=${#links[@]}; i++)); do
    #https://www.youtube.com/watch?v=DvyCbevQbtI
    [[ "${links[i-1]}" =~ ^https?\:\/\/(www|m)\.youtube\.com\/watch\?v\=([A-Za-z0-9_-]+)\&* ]]
    id="${BASH_REMATCH[2]}"
    echo Running yt-dlp --embed-metadata --embed-thumbnail --merge-output-format mkv --sponsorblock-remove sponsor,intro,music_offtopic "$headers" -o "\"%(id)s.%(ext)s\"" -- "\"${links[i]}\""
    eval yt-dlp --embed-metadata --embed-thumbnail --merge-output-format mkv --sponsorblock-remove sponsor,intro,music_offtopic "$headers" -o "\"%(id)s.%(ext)s\"" -- "\"${links[i]}\"" && \
    echo "yt-dlp finished!" &
    while ! file=$(find -maxdepth 1 -name "$id.*" -not -name '*.ytdl' -not -name '*.part' -size +0c); do
        sleep 0.1
        echo "[$(date '+%H:%M:%S')] Waiting for $id.*..."
    done
    [[ "$file" =~ ^(\./)?[A-Za-z0-9_-]+\.(.*) ]]
    ext="${BASH_REMATCH[2]}"
    mpv --window-minimized=yes -- "$id.$ext"
done