使用html5 - camera freez上传三星互联网浏览器流

<video id="videoElement" autoplay></video>

navigator.mediaDevices.getUserMedia({ video: true })
  .then(function(stream) {
    var videoElement = document.getElementById('videoElement');
    videoElement.srcObject = stream;
  })
  .catch(function(error) {
    console.log('Error accessing camera: ', error);
  });

<input type="file" id="uploadInput" accept="video/*">
<button onclick="uploadVideo()">上传</button>

function uploadVideo() {
  var videoElement = document.getElementById('videoElement');
  var canvas = document.createElement('canvas');
  var context = canvas.getContext('2d');
  canvas.width = videoElement.videoWidth;
  canvas.height = videoElement.videoHeight;
  context.drawImage(videoElement, 0, 0, canvas.width, canvas.height);
  canvas.toBlob(function(blob) {
    var formData = new FormData();
    formData.append('video', blob, 'video.webm');
    // 发送formData到服务器
    // ...
  }, 'video/webm');
}