app.js

/*
Streams the first webcam in the system to the specified Jitsi Meet room. 
Audio is currently not sent.

TODO
- Detect if we are kicked from the room
- Support authenticated deployments
*/

const puppeteer = require("puppeteer");

async function main(room, baseUrl = "https://meet.jit.si") {
  // Chromium browser options
  // https://peter.sh/experiments/chromium-command-line-switches/
  const chromeArgs = [
    // Automatically give permission to use media devices
    "--use-fake-ui-for-media-stream",

    // Silence all output, just in case
    "--alsa-output-device=plug:null",

    // Point chromium to xvfb display
    "--display=:1",
    "--no-sandbox",
    "--disable-extensions",
  ];

  // // Jitsi Meet options
  // // https://github.com/jitsi/lib-jitsi-meet/blob/master/doc/API.md
  // const meetArgs = [
  //   // Disable receiving of video
  //   "config.channelLastN=0",
  //   // Mute our audio
  //   "config.startWithAudioMuted=true",
  //   // Don't use simulcast to save resources on the sender (our) side
  //   "config.disableSimulcast=true",
  //   // No need to process audio levels
  //   "config.disableAudioLevels=true",
  //   // Disable P2P mode due to a bug in Jitsi Meet
  //   "config.p2p.enabled=false",
  // ];

  // const url = `${baseUrl}/${room}#${meetArgs.join("&")}`;
  const url = `${baseUrl}/${room}`;
  console.log(`Loading ${url}`);

  // Puppeteer launch options
  // https://github.com/puppeteer/puppeteer/blob/v3.0.1/docs/api.md#puppeteerlaunchoptions
  // https://github.com/puppeteer/puppeteer/issues/550#issuecomment-551991273
  const browser = await puppeteer.launch({
    defaultViewport: { height: 1080, width: 1920 },
    headless: false,
    args: chromeArgs,
    executablePath: "/usr/bin/chromium-browser",
    handleSIGINT: false,
  });
  const page = await browser.newPage();

  // Manual handling on SIGINT to gracefully hangup and exit
  process.on("SIGINT", async () => {
    console.log("Exiting...");
    await page.evaluate("APP.conference.hangup();");
    await page.close();
    browser.close();
    console.log("Done!");
    process.exit();
  });

  // Start Jitsi Meet
  await page.goto(url);

  // Mute audio
  await page.evaluate(`APP.conference.muteAudio(true);`);

  // Set some friendly display name
  await page.evaluate(`APP.conference.changeLocalDisplayName('Webcam');`);

  console.log("Running...");
}

main(process.argv[2] || "test-0123456789");