How to implement video streaming for VoIP calls for Windows Phone 8

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

This topic shows you how to implement video streaming for VoIP calls. Windows Phone 8 provides the MediaStreamer class to enable video streaming. The VoipForegroundLifetimeAgent is launched and its OnLaunched()()() method is called when your foreground application calls Launch()()(). In OnLaunched()()(), create a new instance of the MediaStreamer class specifying an string identifying the stream in the constructor. In the XAML for your foreground application, add a MediaElement in which the video will be displayed. Set the Source property using the following Uri scheme to hook it up to your MediaStreamer: “ms-media-stream-id:MediaStreamer-[streamer ID]”.

Use MediaStreamer to stream video

1. Create a MediaStreamer object in the OnLaunched()()() method of your VoipForegroundLifetimeAgent.

   protected override void OnLaunched()
   {
     MediaStreamer ms = MediaStreamerFactory.CreateMediaStreamer("123");
     string sourceRGBA = @"https://fabrikam.com/Frame_RGBA_320_240.bin";
     RAWMediaStreamSource mss = new RAWMediaStreamSource();
     mss.SetVideoStream(sourceRGBA, 320, 240, "RGBA", 30 * TimeSpan.TicksPerSecond, false);
     ms.SetSource(mss);
   }
   

2. In your foreground app’s XAML, create a MediaElement and set the Source property using the ID you specified when creating the MediaStreamer.

   <MediaElement Source="ms-media-stream-id:MediaStreamer-123"/>