packages/playground/src/app/mixer/index.html

<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>Mixer</title>
    </head>
    <body>
        <header class="header">
            <nav class="nav">
                <a class="active" href="/mixer">Mixer</a>
                <a href="/recorder">Recorder</a>
                <a id="github" href="https://github.com/yzydeveloper/media-stream" target="_blank">Github</a>
            </nav>
        </header>
        <div class="content">
            <h1>Mixer example</h1>
            <h2>Combined video</h2>
            <video id="combined-video" muted controls autoplay playsinline></video>
            <h2>Crop video</h2>
            <video id="crop-video" muted controls autoplay playsinline></video>
        </div>
        <script type="module">
            import { Mixer } from '@media-stream/mixer'
            import '../../style.css'

            // combined video
            navigator.mediaDevices.getUserMedia({
                video: true,
                audio: true
            }).then((mediaStream => {
                const mixer = new Mixer()
                const streamSettings = mediaStream.getVideoTracks()?.[0].getSettings()
                mixer.attachStream(mediaStream, {
                    swidth: streamSettings.width,
                    sheight: streamSettings.height,
                    width: 720,
                    height: 405
                })
                mixer.attachStream(mediaStream, {
                    swidth: streamSettings.width,
                    sheight: streamSettings.height,
                    width: 720 / 2,
                    height: 405 / 2
                })
                mixer.start()
                const video = document.querySelector('#combined-video')
                video.srcObject = mixer.stream
            }))

            // crop-video
            Promise.all([
                navigator.mediaDevices.getUserMedia({
                    video: true,
                    audio: true
                }),
                navigator.mediaDevices.getDisplayMedia({
                    video: true,
                    audio: true
                })
            ]).then(([stream1, stream2]) => {
                const mixer = new Mixer()
                const stream1Settings = stream1.getVideoTracks()?.[0].getSettings()
                mixer.attachStream(stream1, {
                    swidth: stream1Settings.width,
                    sheight: stream1Settings.height,
                    width: 720,
                    height: 405
                })
                const stream2Settings = stream2.getVideoTracks()?.[0].getSettings()
                mixer.attachStream(stream2, {
                    sx: 512,
                    sy: 240,
                    swidth: stream2Settings.width,
                    sheight: stream2Settings.height,
                    width: 480,
                    height: 270
                })
                mixer.start()
                const video = document.querySelector('#crop-video')
                video.srcObject = mixer.stream
            })
        </script>
    </body>
</html>