fix bug

src/components/common/player/live_v2.vue

@@ -198,7 +198,7 @@ export default {
       this.getVideo(n.cameraIndexCode).then(resp => {
         if(! resp || ! resp.url) return this.$message.error('无法获取视频地址')
         const url = resp.url
-        const exists = Object.values(this.videoMap).findIndex(u => u.url === url)
+        const exists = Object.values(this.videoMap).findIndex(u => u.cameraIndexCode === n.cameraIndexCode)
         if(exists >= 0) {
           return this.$message.warning(`该视频已经在 ${exists + 1} 窗口播放`)
         }