c# - 从onvif相机的本地存储（SD卡）获取数据

Question

我正在为Onvif相机开发一个 WPF 应用程序。通过遵循Onvif SDK我已成功连接相机以获取视频流并控制 ptz... 现在我想使用SD card相机上的本地存储，但我没有这方面的信息。任何人都可以告诉我如何使用它Onvif library来连接SD card并从中获取记录的数据。

谢谢你的帮助。

Answer 1

我不确定这是否完全适合您的需求，但我认为它可能会对您有所帮助。此代码可用于连接到 Onvif IP 摄像机并将流录制为 MPEG4 格式。通过使用此代码，录音文件将自动存储在计算机上。

namespace Basic_CameraViewer
{
    public partial class MainWindow : Window
    {
        private VideoViewerWPF _videoViewerWpf;

        private BitmapSourceProvider _provider;

        private IIPCamera _ipCamera;

        private WebCamera _webCamera;

        private MediaConnector _connector;

        private MPEG4Recorder _recorder;

        private IVideoSender _videoSender;

        public MainWindow()
        {
            InitializeComponent();

            _connector = new MediaConnector();

            _provider = new BitmapSourceProvider();

            SetVideoViewer();
        }

        private void SetVideoViewer()
        {
            _videoViewerWpf = new VideoViewerWPF
            {
                HorizontalAlignment = HorizontalAlignment.Stretch,
                VerticalAlignment = VerticalAlignment.Stretch,
                Background = Brushes.Black
            };
            CameraBox.Children.Add(_videoViewerWpf);

            _videoViewerWpf.SetImageProvider(_provider);
        }

        private void ConnectIPCamera_Click(object sender, RoutedEventArgs e)
        {
            var host = HostTextBox.Text;
            var user = UserTextBox.Text;
            var pass = Password.Password;

            _ipCamera = IPCameraFactory.GetCamera(host, user, pass);
            if (_ipCamera == null) return;
            _connector.Connect(_ipCamera.VideoChannel, _provider);

            _videoSender = _ipCamera.VideoChannel;
            _ipCamera.Start();
            _videoViewerWpf.Start();
        }

        private void DisconnectIPCamera_Click(object sender, RoutedEventArgs e)
        {
            _videoViewerWpf.Stop();

            _ipCamera.Disconnect();
            _ipCamera.Dispose();

            _connector.Disconnect(_ipCamera.VideoChannel, _provider);
        }

        private void StartCapture_Click(object sender, RoutedEventArgs e)
        {

            if (_videoSender == null) return;
            var date = DateTime.Now.Year + "-" + DateTime.Now.Month + "-" + DateTime.Now.Day + "-" +
                        DateTime.Now.Hour + "-" + DateTime.Now.Minute + "-" + DateTime.Now.Second;

            var currentpath = AppDomain.CurrentDomain.BaseDirectory + date + ".mpeg4";

            _recorder = new MPEG4Recorder(currentpath);
            _recorder.MultiplexFinished += _recorder_MultiplexFinished;

            _connector.Connect(_videoSender, _recorder.VideoRecorder);
        }

        void _recorder_MultiplexFinished(object sender, Ozeki.VoIP.VoIPEventArgs<bool> e)
        {
            _recorder.MultiplexFinished -= _recorder_MultiplexFinished;
            _recorder.Dispose();
        }

        private void StopCapture_Click(object sender, RoutedEventArgs e)
        {
            if (_videoSender == null) return;
            _connector.Disconnect(_videoSender, _recorder.VideoRecorder);
            _recorder.Multiplex();
        }
    }
}

在这里，您可以找到有关如何实现视频录制的视频说明。

Answer 2

从这里：http ://www.onvif.org/onvif/ver10/recording.wsdl

您需要调用：GetRecordingJobs

找到录音工作。

从这里：http ://www.onvif.org/ver10/replay.wsdl

你需要调用：GetReplayUri

Answer 3

您应该能够使用http://www.onvif.org/onvif/ver10/recording.wsdl和 ExportRecordedData() 方法将视频从 SD 卡复制到网络存储。