Werift Webrtc Versions Save

Video and Audio can be saved to a webm file using Node.js alone, without the need for gStreamer.

example

import { MediaRecorder, RTCPeerConnection } from "werift";
import { Server } from "ws";

// open ./answer.html

const server = new Server({ port: 8888 });
console.log("start");

server.on("connection", async (socket) => {
  const recorder = new MediaRecorder([], "./test.webm", {
    width: 640,
    height: 360,
  });

  const pc = new RTCPeerConnection();

  {
    const transceiver = pc.addTransceiver("video");

    transceiver.onTrack.subscribe((track) => {
      recorder.addTrack(track);
      if (recorder.tracks.length === 2) {
        recorder.start();
      }
      setInterval(() => {
        transceiver.receiver.sendRtcpPLI(track.ssrc);
      }, 15_000);
    });
  }
  {
    const transceiver = pc.addTransceiver("audio");
    transceiver.onTrack.subscribe((track) => {
      recorder.addTrack(track);
      if (recorder.tracks.length === 2) {
        recorder.start();
      }
    });
  }

  await pc.setLocalDescription(await pc.createOffer());
  const sdp = JSON.stringify(pc.localDescription);
  socket.send(sdp);

  socket.on("message", (data: any) => {
    pc.setRemoteDescription(JSON.parse(data));
  });
});

Example

const peer = new RTCPeerConnection({ icePortRange: [44444, 44455] });

Minimum port and Maximum port must not be the same value