没有退出APK，插拔USB导致帧率无法修改

Aiwinn

操作步骤如下：

1.打开执法仪摄像头，帧率设置15，观察监视器显示平均帧率15以下，接近15。登录信息如下：
MPUService: {"bGPSEnable":1,"iBootDuration":0,"iCmdProtoType":0,"iDeviceID":578843905,"iLatitude":2000000000,"iLongitude":2000000000,"iMediaDir":13,"iOnlineThrough":4,"iPlatform":0,"iSerialPortCount":1,"iServerPort":9701,"iStreamPathWay":0,"iVersionCode":-1,"stVideoEncode":{"iBitrate":1350000,"iColorFormat":1,"iEncoderType":0,"iFramerate":15,"iHeight":720,"iWidth":1280,"iYUVConvert":6},"szChannelName":"video","szDeviceName":"▶▶▶⬛⬛⬛⬛⬛◀◀◀","szDeviceType":"PU","szManufacturer":"smartvideo","szServerAddr":"192.168.102.114","szVersionName":""}
MPUService: {"bAECEnable":false,"bNativePlayerEnable":true,"iAECDelay":150,"iAECRoutingMode":2,"iAECSuppressionLevel":1,"iBitrate":32000,"iChannelNum":1,"iEncoder":0,"iSamplePrecision":16,"iSampleRate":8000}


2.插入USB，帧率变为30，观察监视器显示平均帧率30以下，接近30。登录信息如下：
MPUService: {"bGPSEnable":1,"iBootDuration":0,"iCmdProtoType":0,"iDeviceID":578843905,"iLatitude":225741540,"iLongitude":1139268330,"iMediaDir":13,"iOnlineThrough":4,"iPlatform":0,"iSerialPortCount":1,"iServerPort":9701,"iStreamPathWay":0,"iVersionCode":-1,"stVideoEncode":{"iBitrate":1350000,"iColorFormat":1,"iEncoderType":0,"iFramerate":30,"iHeight":720,"iWidth":1280,"iYUVConvert":0},"szChannelName":"video","szDeviceName":"▶▶▶⬛⬛⬛⬛⬛◀◀◀","szDeviceType":"PU","szManufacturer":"smartvideo","szServerAddr":"192.168.102.114","szVersionName":""}
MPUService: {"bAECEnable":false,"bNativePlayerEnable":true,"iAECDelay":150,"iAECRoutingMode":2,"iAECSuppressionLevel":1,"iBitrate":32000,"iChannelNum":1,"iEncoder":0,"iSamplePrecision":16,"iSampleRate":8000}

3.拔出USB开启执法仪摄像头，登录帧率显示15，观察监视器显示平均帧率30以下，接近30。再重新设置帧率为20，监视器显示平均帧率还是30以下，接近30。登录信息如下：
MPUService: {"bGPSEnable":1,"iBootDuration":0,"iCmdProtoType":0,"iDeviceID":578843905,"iLatitude":225741540,"iLongitude":1139268400,"iMediaDir":13,"iOnlineThrough":4,"iPlatform":0,"iSerialPortCount":1,"iServerPort":9701,"iStreamPathWay":0,"iVersionCode":-1,"stVideoEncode":{"iBitrate":1350000,"iColorFormat":1,"iEncoderType":0,"iFramerate":20,"iHeight":720,"iWidth":1280,"iYUVConvert":6},"szChannelName":"video","szDeviceName":"▶▶▶⬛⬛⬛⬛⬛◀◀◀","szDeviceType":"PU","szManufacturer":"smartvideo","szServerAddr":"192.168.102.114","szVersionName":""}
MPUService: {"bAECEnable":false,"bNativePlayerEnable":true,"iAECDelay":150,"iAECRoutingMode":2,"iAECSuppressionLevel":1,"iBitrate":32000,"iChannelNum":1,"iEncoder":0,"iSamplePrecision":16,"iSampleRate":8000}

后续不管怎么修改帧率，都是30左右的平均帧率。

另外问下，外界摄像头无法调解帧率么？

Aiwinn

还有在看这个问题么？

hardfire

这个UVC我们没有做热拔插的相关软件支持。

Aiwinn

hardfire post on2019-2-25 11:20
这个UVC我们没有做热拔插的相关软件支持。

这个感觉像是有状态没有重置的样子，插完USB拔出，上传的数据已经是15了，但是后台显示还是30，本地的相机是重新开启的，不应该会这样吧？