werift_webrtc/sendFile.js

const { getUserMp4, RTCPeerConnection, RTCRtpCodecParameters } = require('werift')
const { Server } = require('ws')

const server = new Server({ port: 8881 });
console.log("start");

server.on("connection", async (socket) => {
    const pc = new RTCPeerConnection({
        codecs: {
            video: [
                new RTCRtpCodecParameters({
                    mimeType: "video/H264",
                    clockRate: 90000,
                    rtcpFeedback: [
                        { type: "nack" },
                        { type: "nack", parameter: "pli" },
                        { type: "goog-remb" },
                    ],
                }),
            ],
        },
    });

    const stream = await getUserMp4("./1.mp4", true);

    // pc.addTransceiver(stream.audio, { direction: "sendonly" });
    pc.addTransceiver(stream.video, { direction: "sendonly" });

    pc.connectionStateChange
        .watch((state) => state === "connected")
        .then(() => {
            stream.start();
        });

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

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