how to upload vtt for video browser code example

Example: how to add subtitle file in a movie in html

<video id="video" controls preload="metadata">
   <source src="video/sintel-short.mp4" type="video/mp4">
   <source src="video/sintel-short.webm" type="video/webm">
   <track label="English" kind="subtitles" srclang="en" src="captions/vtt/sintel-en.vtt" default>
   <track label="Deutsch" kind="subtitles" srclang="de" src="captions/vtt/sintel-de.vtt">
   <track label="Español" kind="subtitles" srclang="es" src="captions/vtt/sintel-es.vtt">
</video>