This sample demonstrates how to use the low latency feature to enable real-time communication applications.

Note  This sample was created using one of the universal app templates available in Visual Studio. It shows how its solution is structured so it can run on both Windows 8.1 and Windows Phone 8.1. For more info about how to build apps that target Windows and Windows Phone with Visual Studio, see Build apps that target Windows and Windows Phone 8.1 by using Visual Studio.

Specifically, this sample contains:

Important  

This sample uses the Media Extension feature of Windows 8.1 to add functionality to the Microsoft Media Foundation pipeline. A Media Extension consists of a hybrid object that implements both Component Object Model (COM) and Windows Runtime interfaces. The COM interfaces interact with the Media Foundation pipeline. The Windows Runtime interfaces activate the component and interact with the Windows Store app.

In most situations, it is recommended that you use Visual C++ with Component Extensions (C++/CX ) to interact with the Windows Runtime. But in the case of hybrid components that implement both COM and Windows Runtime interfaces, such as Media Extensions, this is not possible. C++/CX can only create Windows Runtime objects. So, for hybrid objects it is recommended that you use Windows Runtime C++ Template Library to interact with the Windows Runtime. Be aware that Windows Runtime C++ Template Library has limited support for implementing COM interfaces.

For more info on creating a Media Foundation media extension in Windows Store app, see Walkthrough: Creating a Windows Store app using WRL and Media Foundation and the Media extension sample.

Important  The binaries used by this sample have been included for proof of concept purposes only. They might have significant performance, reliability, and security issues and should not be used outside of a test environment. They are not licensed for use in a production environment or for use with sensitive data.

Important  The URL passed to the code is not validated or authenticated. The application must perform these actions.

To obtain an evaluation copy of Windows 8.1, go to Windows 8.1.

To obtain an evaluation copy of Microsoft Visual Studio 2013, go to Visual Studio 2013.

Related topics

Windows 8 app samples
Roadmaps
Roadmap for apps using C# and Visual Basic
Roadmap for apps using C++
Roadmap for apps using JavaScript
Designing UX for apps
Adding multimedia
Tasks
How to enable low-latency playback
Creating a Windows Store app using WRL and Media Foundation
Reference
Windows.Media.Capture.MediaCapture
MediaCapture
msRealTime
MediaExtensionManager
Windows.Media.MediaProperties

Operating system requirements

Client
Windows 8.1
Server
Windows Server 2012 R2
Phone
Windows Phone 8.1

Build the sample

  1. Start Microsoft Visual Studio 2013 Update 2 and select File > Open > Project/Solution.
  2. Go to the directory to which you unzipped the sample. Then go to the subdirectory named for the sample and double-click the Visual Studio 2013 Update 2 Solution (.sln) file.
  3. Follow the steps for the version of the sample you want:
    • To build the Windows version of the sample:

      1. Select SimpleCommunication.Windows in Solution Explorer.
      2. Press Ctrl+Shift+B, or use Build > Build Solution, or use Build > Build SimpleCommunication.Windows.
    • To build the Windows Phone version of the sample:

      1. Select SimpleCommunication.WindowsPhone in Solution Explorer.
      2. Press Ctrl+Shift+B or use Build > Build Solution or use Build > Build SimpleCommunication.WindowsPhone.

Run the sample

The next steps depend on whether you just want to deploy the sample or you want to both deploy and run it.

Deploying the sample

Deploying and running the sample