Video Brush
<UserControl x:Class='SilverlightApplication3.MainPage' xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation' xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml' xmlns:d='http://schemas.microsoft.com/expression/blend/2008' xmlns:mc='http://schemas.openxmlformats.org/markup-compatibility/2006' mc:Ignorable='d' d:DesignWidth='640' d:DesignHeight='480'> <StackPanel x:Name="LayoutRoot" Background="White"> <MediaElement x:Name="fireMovie" Source="fire.wmv" Height="0" Width="0" IsMuted="True"></MediaElement> <TextBlock Text="Fiery Letters" FontFamily="Arial Black" FontSize="80"> <TextBlock.Foreground> <VideoBrush SourceName="fireMovie"></VideoBrush> </TextBlock.Foreground> </TextBlock> </StackPanel> </UserControl>