Add multiple subtitles to an MP4/MOV with FFMPEG

add (multiple) SRT to MP4 and MOV.sh

# single subtitle with MP4(for MOV : change mov_text to srt)
$ ffmpeg -i VIDEO.mp4 -i SUBTITLE.srt -c:v copy -c:a copy -c:s mov_text OUTPUT.mp4
$ ffmpeg -i VIDEO.mov -i SUBTITLE.srt -c:v copy -c:a copy -c:s srt OUTPUT.mov

# multiple subtitles with MP4(for MOV : change mov_text to srt)
$ ffmpeg -i VIDEO.mp4 -i KOREAN.srt -i ENGLISH.srt \
  -c:v copy -c:a copy -c:s mov_text \
  -map 0:v -map 0:a -map 1 -map 2 \
  -metadata:s:s:0 language=kor -metadata:s:s:1 language=eng \
  OUTPUT.mp4