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examples/internal/jsfiddle/video/demo.js

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+/* eslint-env browser */
+
+const pc = new RTCPeerConnection({
+  iceServers: [{
+    urls: 'stun:stun.l.google.com:19302'
+  }]
+})
+const log = msg => {
+  document.getElementById('logs').innerHTML += msg + '<br>'
+}
+
+pc.ontrack = event => {
+  const el = document.createElement(event.track.kind)
+  el.srcObject = event.streams[0]
+  el.autoplay = true
+  el.controls = true
+  document.getElementById('remoteVideos').appendChild(el)
+}
+
+pc.oniceconnectionstatechange = e => log(pc.iceConnectionState)
+pc.onicecandidate = event => {
+  if (event.candidate === null) {
+    document.getElementById('localSessionDescription').value = btoa(JSON.stringify(pc.localDescription))
+  }
+}
+
+// Offer to receive 1 video track
+pc.addTransceiver('video', {
+  'direction': 'recvonly'
+})
+pc.createOffer().then(d => pc.setLocalDescription(d)).catch(log)
+
+window.startSession = () => {
+  const sd = document.getElementById('remoteSessionDescription').value
+  if (sd === '') {
+    return alert('Session Description must not be empty')
+  }
+  try {
+    pc.setRemoteDescription(new RTCSessionDescription(JSON.parse(atob(sd))))
+  } catch (e) {
+    alert(e)
+  }
+}