开启live-pusher之后，系统的媒体音量被设置的很低，通过音量按钮也无法调节

在电脑上插了摄像头，可是打开模拟器还是这个样子……摄像头装好了（windows的camera app可以看到）同一个摄像头在同事电脑上可以用。尝试重启，重装开发工具也没有用 “IDE暂不支持camera组件，请在真机调试” [图片]

最近的update里面发现cover-view性能明显下降，原先页面上放十几个个cover-view/cover-image对性能没有明显影响，现在只要放五六个cover-view就出现更新非常缓慢（3-5秒后cover view才更新）的情况。 请问是不是已知的问题，如果不是的话这种regression要如何提交report你们才好定位问题（比如如何在手机上rollback到旧版本基础库？）

首先频率有问题： https://developers.weixin.qq.com/blogdetail?action=get_post_info&docid=00006e5976cf9866f726a217b51800&highline=video%7C%26%E7%BB%84%E4%BB%B6%7C%26%E7%9A%84%7C%26bindtimeupdate&token=905838030&lang=zh_CN 但是精度有问题，模拟器上出来是是浮点数，设备上（iOS，Android）都是整数： 代码如下： [代码]onStartPlay () {[代码][代码]  [代码][代码]this[代码][代码].startWallClcokInSec = [代码][代码]new[代码] [代码]Date().getTime() / 1000[代码][代码]  [代码][代码]this[代码][代码].lastVideoTimeInSec = 0.0[代码][代码]},[代码][代码]onTimeUpdate  (e) {[代码][代码]  [代码][代码]var[代码] [代码]currentWallClockInSec = [代码][代码]new[代码] [代码]Date().getTime() / 1000[代码][代码]  [代码][代码]var[代码] [代码]currentVideoTimeInSec = e.mp.detail.currentTime[代码][代码]  [代码][代码]var[代码] [代码]wallClock = currentWallClockInSec - [代码][代码]this[代码][代码].startWallClcokInSec[代码][代码]  [代码][代码]console.log(`wallclock:${(wallClock).toFixed(3)}, videoTime: ${(currentVideoTimeInSec).toFixed(3)}`)[代码][代码]}[代码]模拟器输出： [代码]wallclock:1.247, videoTime: 1.098[代码][代码]wallclock:1.747, videoTime: 1.598[代码][代码]wallclock:1.997, videoTime: 1.848[代码][代码]wallclock:2.248, videoTime: 2.098[代码][代码]wallclock:2.747, videoTime: 2.598[代码][代码]wallclock:3.247, videoTime: 3.098[代码][代码]wallclock:3.747, videoTime: 3.598[代码][代码]wallclock:3.997, videoTime: 3.848[代码] iOS输出： [代码]wallclock:0.232, videoTime: 0.000[代码][代码]wallclock:0.234, videoTime: 0.000[代码][代码]wallclock:1.235, videoTime: 1.000[代码][代码]wallclock:2.251, videoTime: 2.000[代码][代码]wallclock:3.237, videoTime: 3.000[代码][代码]wallclock:4.241, videoTime: 4.000[代码][代码]wallclock:4.875, videoTime: 4.000[代码] bindtimeupdate参数：（貌似进来只是个整数？） [代码]JSON.stringify(e, null, 2)：[代码][代码][代码]"{   "mp": {     "type": "timeupdate",     "target": {       "dataset": {         "eventid": "0"       },       "id": "",       "offsetTop": 0,       "offsetLeft": 0     },     "currentTarget": {       "dataset": {         "eventid": "0"       },       "id": "",       "offsetTop": 0,       "offsetLeft": 0     },     "timeStamp": 78938,     "detail": {       "currentTime": 4,       "duration": 4.63     }   },   "type": "timeupdate",   "timeStamp": 78938,   "target": {     "dataset": {       "eventid": "0"     },     "id": "",     "offsetTop": 0,     "offsetLeft": 0,     "currentTime": 4,     "duration": 4.63   },   "currentTarget": {     "dataset": {       "eventid": "0"     },     "id": "",     "offsetTop": 0,     "offsetLeft": 0   } }" [代码][代码] 设备信息： {"errMsg":"getSystemInfo:ok","batteryLevel":95,"version":"6.6.6","system":"iOS 11.3","windowHeight":603,"pixelRatio":2,"screenHeight":667,"language":"zh_CN","statusBarHeight":20,"windowWidth":375,"model":"iPhone 7<iPhone9,1>","screenWidth":375,"fontSizeSetting":16,"brand":"iPhone","platform":"ios","SDKVersion":"1.9.98"}