FFmpeg command for a looping MP4 set to a folder of MP3s for YouTube

loop.sh

# only tested with mp3s and mp4s.
# code -stolen- taken from https://github.com/foxtacles/youtube-live-radio/blob/master/stream.sh

# "VIDEO.mp4" is where your video filename goes
# "MUSICFOLDER" is where your folder name goes for all your mp3s
# "YOUTUBEKEY" is where your stream key goes

# 960x720@30

#!/bin/bash

set -e

while true
do
  ffmpeg -loglevel info -y -re -stream_loop -1 \
  -i VIDEO.mp4 \
  -f concat -safe 0 -i <((for f in ./MUSICFOLDER/*.mp3; do path="$PWD/$f"; echo "file ${path@Q}"; done) | shuf) \
  -c:v libx264 -preset veryfast -b:v 4000k -maxrate 4000k -bufsize 6000k \
  -vf scale=960:720 \
  -r 30 -pix_fmt yuv420p \
  -c:a aac -b:a 128k -ar 44100 \
  -map 0:v:0 -map 1:a:0 \
  -f flv rtmp://a.rtmp.youtube.com/live2/YOUTUBEKEY
done