fix 高清摄像头的显示比例

src/components/FaceRecognition/FaceRecognition.vue

@@ -101,6 +101,7 @@ export default {
           const stream = await navigator.mediaDevices.getUserMedia({
             video: {
               facingMode: "user",
+              aspectRatio: 4 / 3,
               // width: 400,
               // height: this.showRecognizeButton ? 300 : 250
             },