broadcast

broadcast

broadcast is a Pion WebRTC application that demonstrates how to broadcast a video to many peers, while only requiring the broadcaster to upload once.

This could serve as the building block to building conferencing software, and other applications where publishers are bandwidth constrained.

Instructions

Download broadcast

go install github.com/pion/webrtc/v4/examples/broadcast@latest

Open broadcast example page

jsfiddle.net You should see two buttons Publish a Broadcast and Join a Broadcast

Run Broadcast

Linux/macOS

Run broadcast OR run main.go in github.com/pion/webrtc/examples/broadcast

Start a publisher

• Click Publish a Broadcast
• Press Copy browser SDP to clipboard or copy the Browser base64 Session Description string manually
• Run curl localhost:8080 -d "$BROWSER_OFFER". $BROWSER_OFFER is the value you copied in the last step.
• The broadcast terminal application will respond with an answer, paste this into the second input field in your browser.
• Press Start Session
• The connection state will be printed in the terminal and under logs in the browser.

Join the broadcast

• Click Join a Broadcast
• Copy the string in the first input labelled Browser base64 Session Description
• Run curl localhost:8080 -d "$BROWSER_OFFER". $BROWSER_OFFER is the value you copied in the last step.
• The broadcast terminal application will respond with an answer, paste this into the second input field in your browser.
• Press Start Session
• The connection state will be printed in the terminal and under logs in the browser.

You can change the listening port using -port 8011

You can Join the broadcast as many times as you want. The broadcast Golang application is relaying all traffic, so your browser only has to upload once.

Congrats, you have used Pion WebRTC! Now start building something cool