<video src="video.mp4" controls>

  <track kind="subtitles" label="English subtitles" src="video.srt" srclang="en" default></track>

  <track kind="subtitles" label="Deutsche Untertitel" src="subtitles_de.vtt" srclang="de"></track>

</video>


이렇게 짜 넣었는데 뭔 반응이 없네