You can also opt to download and store Video.js locally on your web server if you want.

The head links in the Video.js library from a content-delivery network (CDN).

HTML5 live streaming server services (recommended) are available with the WebRTC Host plans: Complete & Stream Only (when FFmpeg is available on current web host). An RTMP player for HTML5 is compatible with the fastest, most reliable encoders.

For web streaming you should review HTML5 live streaming options, unless you need only RTMP for some other usage. HTML5

Rtmp html5