屏幕录制 | 开发笔记

# 屏幕录制

主要使用：

navigator.mediaDevices.getDisplayMedia

# 效果

# 代码

<!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>屏幕录制</title>
</head>

<body>
  <h2>屏幕录制</h2>
  <video id="video" src="" autoplay style="width: 700px; height: 500px; background-color: #000000;"></video>
  <br>
  <button onclick="shareScreen()">开始录制</button>
  <button onclick="stopStream()">停止录制</button>

  <script>
    const videoElm = document.getElementById('video');
    // 获取屏幕共享的媒体流
    async function shareScreen() {
      let localStream = await navigator.mediaDevices.getDisplayMedia({
        audio: true,
        video: true,
      });
      // 播放本地视频流
      playStream(localStream)
    }

    // 在视频标签中播放视频流
    function playStream(stream) {
      videoElm.srcObject = stream
    }

    function stopStream() {
      video.srcObject = null;
    }
  </script>
</body>

</html>

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