for file in *.mpg; do
    ffmpeg -i "$file" -c:v libx264 -c:a aac -crf 20 -preset:v veryslow ../videos_mp4/"${file%.mpg}.mp4";
done

... with a little help from my ai friends... And now I can convert all mpg files to mp4 with: ```sh for file in *.mpg; do ffmpeg -i "$file" -c:v libx264 -c:a aac -crf 20 -preset:v veryslow ../videos_mp4/"${file%.mpg}.mp4"; done ```