override mp4 audio with mp3 audio

merge_all.sh

#!/bin/bash

echo "hi"

mp4Arr=(`find $PWD -maxdepth 1 -iname "*.mp4"`)

#Make Fixed Directory
mkdir fixed

for i in "${mp4Arr[@]}"
do
  #Remove extentions
  filename=$(basename $i)
  extension="${filename##*.}"
  filename="${filename%.*}"
  echo Converting $filename

  #Convert! This assumes files have .mp4 and .mp3 extensions
  ffmpeg -i $filename.mp4 -i $filename.mp3 -c copy -map 0:v:0 -map 1:a:0 -shortest fixed/$filename.mp4
done