ytdl_mpv.sh

#!/bin/bash
set -e

URL=$1
YTDL=youtube-dl

if [ -z "$MPV" ] ; then
    MPV=mpv
fi

cookies_dir="$(mktemp -d /tmp/youtube-dl_mpv.XXXX)"
cookies_file="${cookies_dir}/cookies"
user_agent="$($YTDL --dump-user-agent)" # or set whatever you want

$YTDL -F --no-playlist $URL
echo
read -p "Which video format? (best) " FMTV
read -p "Which audio format? (best) " FMTA

if [ -z $FMTV ]; then
	FMTV="bestvideo"
fi
if [ -z $FMTA ]; then
	FMTA="bestaudio"
fi

{
    read -r title
    read -r video_url
} < <($YTDL \
    --user-agent="$user_agent" \
    --cookies="$cookies_file" \
    --get-url --get-title --no-playlist \
    -f $FMTV \
    "$URL")

if [ $FMTA != "none" ]; then
audio=--audio-file="$($YTDL \
    --user-agent="$user_agent" \
    --cookies="$cookies_file" \
    --get-url --no-playlist \
    -f $FMTA \
    "$URL")"
fi


$MPV --cookies --cookies-file="$cookies_file" --user-agent="$user_agent" \
	$audio --media-title "$title" "$video_url"

rm -rf "$cookies_dir"