For certain films it can be vital that subtitles can be styled in multiple ways. For example: I recently watched the movie "The Handmaiden" which includes both

For certain films it can be vital that subtitles can be styled in multiple ways. For example: I recently watched the movie "The Handmaiden" which includes both spoken Korean and Japanese. The language the characters speak in any given situation is relevant to the story. If all the subtitles were the same I would not have noticed this destinction.