Создание списка камер

[SmileGobo 2]

Пытаюсь создать список камер:

void MotionOptionWidget::InitCamList(const uint max_cam){

    cv::VideoCapture cap;

    const std::string base_name="Camera ";

    for(auto i=0;i<max_cam;i++){


    if (cap.open(i)){


          std::stringstream ss;

          ss<<base_name<<i;

          //m_cam_list.append(CameraInfo(i,QString::fromStdString(ss.str())));

          CameraInfo info(i,QString::fromStdString(ss.str()));

          ui->m_camlist_widget->addItem(info.m_name,QVariant::fromValue(info));

      }

    }


}

При любом количестве камер cap.open выдает true, если вызываю cap.release() после открытия, то падает на несуществующей камере с индексом 2(две USB камеры подрубил) с таким сообщением:

:::::: MUTEX CREATED --- 2NetworkCameraSettings :: Template #232 is 

missing...NetworkCameraSettings :: LoadTemplateById #232[0] Thread initalized >> 

http://127.0.0.1/cam_1.jpgPushSource Destroy...:::::: MUTEX RELEASED --- 2Mutex 

destroyed...Network Camera :: KillAsyncHTTP From .Destroy()AsyncHTTP Thread DESTROY 

received...====================================Exception in HTTP GET : HTTP/1.1 404 Not 

Found====================================HTTP Thread is DISCONNECTED :)PushPin 

CreatePushAudioPin CreateNetworkCameraSettings :: Template #232 is 

missing...NetworkCameraSettings :: LoadTemplateById #232[2] HTTP MPEG4 Thread initalized >> 

http://127.0.0.1PushSource Destroy...Mutex destroyed...Network Camera RTSP :: KillAsyncHTTP 

[HTTP] From .Destroy()Connection ResetAsyncHTTP Thread DESTROY received...HTTP Thread is 

DISCONNECTED :)KillAsyncHTTPRequest CompleteReady To destroy FThreadsLockFThreadsLock 

DestroyedPushPin DestroyPushAudioPin DestroyPushPin CreatePushAudioPin 

CreateNetworkCameraSettings :: Template #232 is missing...NetworkCameraSettings :: 

LoadTemplateById #232[2] HTTP MPEG4 Thread initalized >> http://127.0.0.1

пробовал использвать try{} catch(...) исключение не ловится =(

[Smorodov 579]

http://www.compvision.ru/forum/index.php?showtopic=194&st=158