<Canvas Width="1" Height="1" xmlns="http://schemas.microsoft.com/client/2007" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Background="Black" >
    <Canvas x:Name="videoArea" Width="1" Height="1" Canvas.ZIndex="1">
        <MediaElement x:Name="media" Width="1" Height="1"/>
    </Canvas>
</Canvas>

