Streaming a webcam to a Jitsi Meet room

stream.js

const puppeteer = require('puppeteer');


// Streams the first webcam in the system to the specified Jitsi Meet room. Audio is currently
// not sent, but it can be easily enabled by disabling the corresponding setting in `meetArgs`.
//
// TODO
//   - Detect if we are kicked from the room
//   - Support authenticated deployments
//
// NOTE: only tested on GNU/Linux.

async function main(room, baseUrl='https://meet.jit.si') {
    const chromeArgs = [
        // Disable sandboxing, gives an error on Linux
        '--no-sandbox',
        '--disable-setuid-sandbox',
        // Automatically give permission to use media devices
        '--use-fake-ui-for-media-stream',
        // Silence all output, just in case
        '--alsa-output-device=plug:null'
    ];
    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('&')}`;
    console.log(`Loading ${url}`);

    const browser = await puppeteer.launch({ args: chromeArgs, 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();
    });

    await page.goto(url);

    // Set some friendly display name
    await page.evaluate('APP.conference._room.setDisplayName("Streamer");');

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

main(process.argv[2] || 'test123');

Nice!

Current version needs the following as part of the meetArgs in order to actually connect:

    // Skip the prejoin page - join the conference immediately
    'config.prejoinPageEnabled=false',

    async isOnlyParticipant() {
        try {
            const members = await this.page.evaluate('APP.conference.membersCount;');


            console.log('Number of participants: %o', members);

            // Check if there is only one member (yourself)
            return members.length === 1;
        } catch (error) {
            console.error('Error checking the number of participants:', error);
            throw error;
        }
    }

Hi everyone, do you know why I always get this error in my puppeteer when executing the above code? Thanks

Error checking the number of participants: 91 |         name = detail.name;
92 |         message = detail.message;
93 |     }
94 |     const messageHeight = message.split('\n').length;
95 |     const error = new Error(message);
96 |     error.name = name;
                     ^
TypeError: Cannot read properties of undefined (reading 'getParticipants')
      at /Users/ivanhutomo/Documents/GitHub/quickConference/node_modules/puppeteer-core/lib/esm/puppeteer/common/util.js:96:17