<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:props="clr-namespace:WpfApplication1.Properties"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <TextBlock VerticalAlignment="Top" Foreground="Red">Пример отображения видео...</TextBlock>
        <MediaElement Source="D:\VS 2010\Projects\WpfApplication1\Resources\zzz.wmv" Width="200" Height="200"/>
    </Grid>
</Window>