> Video.js is a web video player built from the ground up for an HTML5 world. It supports HTML5 and Flash video, as well as YouTube and Vimeo (through [plugins][plugins]). It supports video playback on desktops and mobile devices. This project was started mid 2010, and the player is now used on over ~~50,000~~ ~~100,000~~ ~~200,000~~ [400,000 websites][builtwith].
Thanks to the awesome folks over at [Fastly][fastly], there's a free, CDN hosted version of Video.js that anyone can use. Add these tags to your document's `<head>`:
Next, using Video.js is as simple as creating a `<video>` element, but with an additional `data-setup` attribute. At a minimum, this attribute must have a value of `'{}'`, but it can include any Video.js [options][options] - just make sure it contains valid JSON!
When the page loads, Video.js will find this element and automatically setup a player in its place.
If you don't want to use automatic setup, you can leave off the `data-setup` attribute and initialize a `<video>` element manually using the `videojs` function:
```js
var player = videojs('my-player');
```
The `videojs` function also accepts an `options` object and a callback to be invoked
If you're ready to dive in, the [Getting Started][getting-started] page and [documentation][docs] are the best places to go for more information. If you get stuck, head over to our [Slack channel][slack-link]!
Video.js is a free and open source library, and we appreciate any help you're willing to give - whether it's fixing bugs, improving documentation, or suggesting new features. Check out the [contributing guide][contributing] for more!
_Video.js uses [BrowserStack][browserstack] for compatibility testing._
