摄像头预览优化

src/views/iot/tplink/camera/components/CameraPreviewForm.vue

@@ -137,7 +137,7 @@
 
   const formRef = ref();
   const player = ref();
-  const resolution = ref<string>('超清');
+  const resolution = ref<string>('流畅');
   const izPlaying = ref<boolean>(true);
   const izRecording = ref<boolean>(false);
   const izPhone = ref<boolean>(false);
@@ -219,6 +219,7 @@
     if (player.value){
       player.value.destroy().then(() => {
       }); // 销毁
+      player.value = null;
     }
     const TumsPlayer = window['tums-player'].default;
     player.value = new TumsPlayer('video-container-preview', {