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HTML5通过navigator.mediaDevices.getUserMedia

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HTML5通过navigator.mediaDevices.getUserMedia

为什么我这个方法在安卓下面一直是反的，，本地流就是反的


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反的是什么意思?左右反 还是 上下反还是旋转了 180°?
旋转的话 利用 transform 解决吧
其他的话 去了解下 constraints
https://developer.mozilla.org/zh-CN/docs/Web/API/MediaDevices/getUserMedia
设置 facingMode


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