Convert all [{container format}] in a directory to any other kind of file using bash and ffmpeg

ffmpegConvert.sh

# Modify the ffmpeg command to your liking if you want :)
for name in ./*; do ffmpeg -i "$name" -vn "./mp3/${name%.*}.mp3"; done
# Change ./* to ./*.mp4 to select only MP4 files and so on.
# Change .mp3 to any format you like and 
# ffmpeg will automatically adjust to the container format
# because of -vn