Hello. I have same aim like Saban. And i installed WM Encoder 9 SDK. Found Example to broadcast video stream in MSDN:

The following example shows how to create the predefined user interface, and broadcast live multimedia content from the local computer (http://computer_name:8080). The audio and video sources are configured to use the default sound card and video capture card.

using System;
using WMEncoderLib;
class EncodeFile
{
    static void Main()
    {
        try
        {
            // Create WMEncoderApp and WMEncoder objects.
            WMEncoderApp EncoderApp = new WMEncoderApp();
            IWMEncoder Encoder = EncoderApp.Encoder;

            // Display the predefined Encoder UI.
            EncoderApp.Visible = true;

            // Specify the source for the input stream.
            IWMEncSourceGroupCollection SrcGrpColl = Encoder.SourceGroupCollection;
            IWMEncSourceGroup SrcGrp = SrcGrpColl.Add("SG_1");
            IWMEncSource SrcAud = SrcGrp.AddSource(WMENC_SOURCE_TYPE.WMENC_AUDIO);
            IWMEncVideoSource2 SrcVid = (IWMEncVideoSource2)SrcGrp.AddSource(WMENC_SOURCE_ TYPE.WMENC_VIDEO);
            SrcAud.SetInput("Default_Audio_Device", "Device", "");
            SrcVid.SetInput("Default_Video_Device", "Device", "");

            // Specify a profile.
            IWMEncProfile Pro;
            IWMEncProfileCollection ProColl = Encoder.ProfileCollection;

            for (int i = 0; i < ProColl.Count; i++)
            {
                Pro = ProColl.Item(i);
                if (Pro.Name == "Windows Media Video 8 for Local Area Network (384 Kbps)")
                {
                    SrcGrp.set_Profile(Pro);
                    break;
                }
            }

            // Create a broadcast.
            IWMEncBroadcast BrdCst = Encoder.Broadcast;
            BrdCst.set_PortNumber (WMENC_BROADCAST_PROTOCOL.WMENC_PROTOCOL_HTTP, 8080);

            // Start the encoding process.
            Encoder.PrepareToEncode(true);
            Encoder.Start();

            // Use this statement so that the Windows Media Encoder window does not close until you press Enter.
            Console.WriteLine("Press Enter to close this window.");
            Console.ReadLine();
        }

        catch (Exception e)
        {
            // TODO: Handle exceptions.
        }
    }
}
but in the "WMEncoderApp EncoderApp = new WMEncoderApp();" string I have exception:
Retrieving the COM class factory for component with CLSID {632B606B-BBC6-11D2-A329-006097C4E476} failed due to the following error: 80040154
Pls tell who know what is this...
Saban, please tell me how u solved u'r problem...
If not to use this string and remake code for capture devices
(SrcVid.SetInput("ScreenCapture1", "ScreenCap", "");)
i have another exception in the "Encoder.PrepareToEncode(true);" string about illegal video format.

Yes I was having problems finding a suitable way to stream my desktop images. The application I built using Windows Media Encoder runs fine. I am pushing my stream to a windows media server unlike what you are trying to achieve i.e. broadcasting from the local machine itself. Have you decoded the error code? And have you installed windows media Encoder in your machine? I'm not sure but from the exception you mentioned it seems there is problem with your Windows Media Encoder. Please check.

Thx. I found by error code many articles, but there was descreibed codec problems. I didn't thought that besides SDK I have to Install WM Encoder (=. Sorry. And now i can broadcast video screen capture. But capturing+encoding procces takes 100% my CPU. )=
Anyway my problem solved by installing WM Encoder (about 10mb).

Hi sabansingh!

    I used the "broadcast video stream in MSDN" examples in ASP.NET application. here i got the following error,

The system cannot find the file specified.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.IO.FileNotFoundException: The system cannot find the file specified.

plz help me about this error.

How to Use WMEncoder in ASP.NET?

Plz give ur ideas ASAP.

Hi Ganesh,
Could you paste the code that u used if its not a problem. It might help in finding the error.

Saban.