macOS folder action to extract ssa subtitles from MKV files recursively as srt

extract ssa subtitles.workflow

# add a Run shell script module in automator, pass input as arguments. Set as a folder action on the appropiate folders.

for f in "$@"
do
	if [ ${f: -4} == ".mkv" ]
	then
		/usr/local/bin/ffmpeg -hide_banner -y -loglevel quiet -i "$f" -map 0:s? "${f%.*}".en.srt
	fi
done