To work in all browsers & web devices, you should provide at least 2 file types as Opera and some older browsers do not support MP4.
- MP4
- Webm
- Ogv
<video width="320" height="240" controls>
<source src="movie.mp4" type="video/mp4">
<source src="movie.ogg" type="video/ogg">
<source src="movie.webm" type="video/webm">
Your browser does not support the video tag.
</video>
Nancy O.