videojs-quality-selector/README.md

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# Silvermine VideoJS Quality/Resolution Selector
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[![Build Status](https://travis-ci.org/silvermine/videojs-quality-selector.svg?branch=master)](https://travis-ci.org/silvermine/videojs-quality-selector)
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[![Coverage Status](https://coveralls.io/repos/github/silvermine/videojs-quality-selector/badge.svg?branch=master)](https://coveralls.io/github/silvermine/videojs-quality-selector?branch=master)
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[![Dependency Status](https://david-dm.org/silvermine/videojs-quality-selector.svg)](https://david-dm.org/silvermine/videojs-quality-selector)
[![Dev Dependency Status](https://david-dm.org/silvermine/videojs-quality-selector/dev-status.svg)](https://david-dm.org/silvermine/videojs-quality-selector?type=dev)
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## What is it?
A plugin for [videojs](http://videojs.com/) versions 6+ that adds a button to the control
bar which will allow the user to choose from available video qualities or resolutions.
## How do I use it?
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There are three primary steps to use this plug-in: [(1) including](#includingrequiring),
[(2) providing sources](#providing-video-sources), and [(3) adding the component the to
`controlBar`](#adding-to-the-player). Please see the following for information on each
step.
### Including/Requiring
#### Using `<script>` tag
The minified JS file can come from a downloaded copy or a CDN. When including
it, make sure that the `<script>` tag for the plugin appears _after_ the
include for [video.js](http://videojs.com/) (note that this plugin will look
for `videojs` at `window.videojs`).
There is an example of this in
[`docs/demo/index.html`](./docs/demo/index.html).
##### From local file:
```js
<script src="./path/to/video.min.js"></script>
<script src="./path/to/silvermine-videojs-quality-selector.min.js"></script>
```
##### From [`unpkg`](https://unpkg.com/silvermine-videojs-quality-selector/):
```js
<script src="./path/to/video.min.js"></script>
<script src="https://unpkg.com/silvermine-videojs-quality-selector/dist/js/silvermine-videojs-quality-selector.min.js"></script>
```
#### Using `require`
When using NPM/Browserify, first install the plugin.
```
npm install --save silvermine-videojs-quality-selector
```
For `videojs` to use the plug-in, the plugin needs to register itself with the instance of
`videojs`. This can be accomplished by:
```js
var videojs = require('videojs');
// The following registers the plugin with `videojs`
require('silvermine-videojs-quality-selector')(videojs);
```
### Providing video sources
Sources can be provided with either the `<source>` tag or via the `src` function on the
instance of a `video.js` player.
#### Using `<source>`
```html
<video id="video_1" class="video-js vjs-default-skin" controls preload="auto" width="640" height="268" data-setup='{}'>
<source src="https://example.com/video_720.mp4" type="video/mp4" label="720P">
<source src="https://example.com/video_480.mp4" type="video/mp4" label="480P" selected="true">
<source src="https://example.com/video_360.mp4" type="video/mp4" label="360P">
</video>
```
#### Using `player.src()`
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```js
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player.src([
{
src: 'https://example.com/video_720.mp4',
type: 'video/mp4',
label: '720P',
},
{
src: 'https://example.com/video_480.mp4',
type: 'video/mp4',
label: '480P',
selected: true,
},
{
src: 'https://example.com/video_360.mp4',
type: 'video/mp4',
label: '360P',
},
]);
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```
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### Adding to the player
There are at least two ways to add the quality selector control to the player's control
bar. The first is directly adding it via `addChild`. For example:
```
player.controlBar.addChild('QualitySelector');
```
The second option is to add the control via the player's options, for instance:
```
var options, player;
options = {
controlBar: {
children: [
'playToggle',
'progressControl',
'volumePanel',
'qualitySelector',
'fullscreenToggle',
],
},
};
player = videojs('video_1', options);
```
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## How do I contribute?
We genuinely appreciate external contributions. See [our extensive
documentation](https://github.com/silvermine/silvermine-info#contributing) on how to
contribute.
## License
This software is released under the MIT license. See [the license file](LICENSE) for more
details.