Como Comienzo a transmitir desde mi pc

2 pregunta los canales dejaron de funcionar y ademas

First you need a compatible streaming hosting where to deploy and configure plugin.

Then you can easily setup and broadcast live video from PC webcam as described at https://broadcastlivevideo.com/how-to-broadcast-from-pc-webcam/ .

You can also broadcast using HTML5 WebRTC (including from mobiles) if hosting permits:
https://broadcastlivevideo.com/broadcast-html5-webrtc-to-mobile-hls/