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js 调用摄像头可以逆时针旋转90度吗

var constraints = {
  audio: false,
  video: {
    deviceId:arr[i].deviceId,//调用指定的摄像头
    width: 3648,
    height: 2736,
    transform: "scaleX(-1)"
  }
};
navigator.mediaDevices.getUserMedia(constraints).then(function (stream)

这种调用摄像头怎么旋转90度来拍摄?不知道可不可以旋转,还是说只能拍了照之后在canvas里去旋转图片


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不可以旋转,只能拍完之后对照片进行处理,可以看看这篇文章https://segmentfault.com/a/11...


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