- 
confirm you are developing in develop branch 
- 
download dependencies npm i 
- 
download gitbook plugins 
npm run gitbook-install- 
developing local npm run dev 
- 
deploy github master npm run deploy 
how to add gitbook plugins
- modify book.json
book.json
{
  "plugins": [ "plugin-name" ]
}- install plugin
  ./node_modules/.bin/gitbook install
  ```
**plugin `local-video` is already built-in**
You can include the Video.js markup where you want it using raw GitBook tags
```javascript
{% raw %}
<video id="my-video" class="video-js" controls preload="auto">
  <source src="sd1434876536_2.mp4" type='video/mp4'>
</video>
{% endraw %}