how to reconnect to rtsp stream with VideoCapture in c++

edit

I', trying to write a code that does reconnection to stream when there is no frame or some error has occurred when reading a frame. or when I stop to read frames and then resume to read frames. when there is "long" latency between creating the VideoCapture object and reding the frames, I can't reconnect to read frames from the stream. if there is an issue with reading a frame after 30 continuous tries I try to reconnect. I don't know what I'm doing wrong and why the reconnecting doesn't work. code below

    void StreamReader::ReadFrames()
{
    int error_count = 0;
    while (m_run)
    {
        cv::Mat frame;
        if(m_stream.read(frame) == false || !frame.data || frame.channels() != 3  )                              // Check for invalid input
        {
            LogError <<  "StreamReader::ReadFrames Could not open or read frame" ;
            if(++error_count > 30)
            {
                //need to reconnect
                PublishEngineStatus::Notify(EngineStatus::ENGINE_TRY_RECONNECT_TO_CAMERA, m_id);
                return;
            }
            LogError <<  "StreamReader::ReadFrames Could not read frame, err count is: " << error_count;
            continue;
        }

        error_count = 0;
        LogDebug << "StreamReader::Run push frame";
        m_frame.push(frame);
    }
}

void StreamReader::ReconnectToStream()
{
    //m_stream.release();
    if(m_type == StreamType::URL_STREAM)
    {
        m_stream = VideoCapture(m_url);
        if(m_stream.isOpened() == true)
        {
            PublishEngineStatus::Notify(EngineStatus::ENGINE_CONNECT_TO_CAMERA, m_id);
        }
        return;
    }

    if(m_type == StreamType::DESKTOP_CAM_STREAM)
    {
        m_stream = VideoCapture(m_cam_index);
        if(m_stream.isOpened() == true)
        {
            PublishEngineStatus::Notify(EngineStatus::ENGINE_CONNECT_TO_CAMERA, m_id);
        }
    }
}

void StreamReader::Run()
{
    m_run = true;

    while (m_run)
    {
        //check if video device has been initialised
        if ( (m_stream.isOpened() == false) && (m_type != StreamType::VIDEO_FILE_STREAM))
        {
            LogFatal << "StreamReader::Run camera stream is not open try to reconnect stream: " << m_url;
            ReconnectToStream();
            continue;
        }

        if ( (m_stream.isOpened() == false) && (m_type == StreamType::VIDEO_FILE_STREAM))
        {
            LogFatal << "StreamReader::Run VIDEO_FILE_STREAM is not open or ended stop reading files" << m_url;
            return;
        }

        ReadFrames();
    }

    m_stream.release();
}