C # Use Emgu CV to play streaming media (RTSP ),

C # Use Emgu CV to play streaming media (RTSP ),

Emgu CVIs a cross platform. net wrapper to the OpenCV image processing library. allowing OpenCV functions to be called from. NET compatible programming ages such as C #, VB, VC ++, IronPython etc. the wrapper can be compiled by Visual Studio, Xamarin Studio and Unity, it can run on Windows, Linux, Mac OS X, iOS, Android and Windows Phone.

Emgu CV: http://www.emgu.com/wiki/index.php/main_page. download the 3.0 forbidden file, and Emgu CV becomes ffmpeg.

　　

Capture _capture = new Capture(fileName); //rtsp://user:password@192.168.1.66:554/  _capture.ImageGrabbed += capture_ImageGrabbed;_capture.Start();

Private void capture_ImageGrabbed (object sender, EventArgs e)
{
Try
{
Mat frame = new Mat ();

Lock (lockObj)
{
If (capture! = Null)
{
If (! Capture. Retrieve (frame ))
{
Frame. Dispose ();
Return;
}
If (frame. IsEmpty)
Return;

// You can use the ImageBox provided by Emgu CV to display the video or convert it to BitmapSource.

// Omitted

}
}
}
Catch (Exception ex)
{
}
}

 

public static class BitmapSourceConvert    {        /// <summary>        /// Delete a GDI object        /// </summary>        /// <param name="o">The poniter to the GDI object to be deleted</param>        /// <returns></returns>        [DllImport("gdi32")]        private static extern int DeleteObject(IntPtr o);        /// <summary>        /// Convert an IImage to a WPF BitmapSource. The result can be used in the Set Property of Image.Source        /// </summary>        /// <param name="image">The Emgu CV Image</param>        /// <returns>The equivalent BitmapSource</returns>        public static BitmapSource ToBitmapSource(IImage image)        {            using (System.Drawing.Bitmap source = image.Bitmap)            {                IntPtr ptr = source.GetHbitmap(); //obtain the Hbitmap                BitmapSource bs = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(                    ptr,                    IntPtr.Zero,                    Int32Rect.Empty,                    System.Windows.Media.Imaging.BitmapSizeOptions.FromEmptyOptions());                DeleteObject(ptr); //release the HBitmap                return bs;            }        }    }

 

Note: Because ffmpeg uses TCP to synchronously connect to the video source by default, the connection timeout is long,

Capture _ capture = new Capture (fileName). If the accessed media does not exist, blocking may occur. You need to set the ffmpeg connection mode or timeout time.

Setting method:
Public bool SetCaptureProperty (CapProp property, double value); // The Capture method. The specific settings are unknown, or Emgu CV does not provide this interface