Simple script to loop through a directory of MKV's and convert them to MP4's

mkv2mp4.sh

#!/bin/bash
for file in *.mkv; do
  # Extract filename from input file without the extension
  filename=$(basename "$file")
  #extension="${filename##*.}"
  filename="${filename%.*}.mp4"

  echo $filename
  ffmpeg -i "$file" -codec:v libx264 -preset superfast -crf 22 -vf scale="720:trunc(ow/a/2)*2" -codec:a libfdk_aac -b:a 128k -y "$filename"
done