如果您的网站不在网络服务器上，那么如何使用标记？为什么不装载矿井？
<video width="320" height="240" poster="hungryDogvideoCover.jpg" controls>
<source src="videok/hungryDog.mp4" type="video/mp4">
<track kind="subtitles" label="asd" srclang="hu" src="a.vtt" />
</video>
a.vtt在index.html旁边，并且是有效的vtt
WEBVTT
00:00:01.490 --> 00:00:17.516
[music]
00:00:19.263 --> 00:00:24.792
The Eotvos Lorand University receives
hundreds of exchange students each year.
00:00:26.097 --> 00:00:30.684
Nowadays we provide them several hundred
courses in foreign languages, mostly in english
我的大学教授告诉我要为视频添加字幕，但我们不必/不能使用任何网络服务器？