How to play video using html tag

video.html

<html>
<head>
</head>
<body>
<video controls>
<source src="aadat.mkv" type="video/mp4" height="500" width="500">
</video>

<video controls>
<source src="Axwell_-_Feel_the_Vibe[MINS00000880].mkv" type="video/mp4" >
</video>

<video controls>
<source src="Billo Rani.mkv" type="video/mp4" >
</video>
</body>
</html>