Rotating 2D element as if 3D and stretching

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WPF

I want to a MediaElement that has properties (like ME2 in Grid.Row=1 ). It should be (Stretch="Uniform" StretchDirection="Both" )

I also want to rotate the MediaElement 45 angle on y axis with center value for x axis 1. (like ME1 in Grid.Row=0 )

Following XAML realizes two of them for 2 different MediaElement. But I want to realize two of them for a MediaElement. But rotated MediaElement does not stretch. How can I do that?

<Window
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     x:Class="WpfApplication2.Window2"
     x:Name="Window"
     Title="Window2"
     Width="640" Height="480">
     <Grid Background="Aqua" ShowGridLines="True">
          <Grid.RowDefinitions>
               <RowDefinition Height="1*"/>
               <RowDefinition Height="1*"/>
          </Grid.RowDefinitions>
          <Viewport3D>
               <Viewport3D.Camera>
                    <PerspectiveCamera Position="0, 0, 8" >
                         <PerspectiveCamera.Transform>
                              <Transform3DGroup>
                                   <TranslateTransform3D OffsetX="-1" OffsetY="0" OffsetZ="0"/>
                                   <RotateTransform3D >
                                        <RotateTransform3D.Rotation>
                                             <AxisAngleRotation3D Angle="45" Axis="0,1,0"/>
                                        </RotateTransform3D.Rotation>
                                   </RotateTransform3D>
                                   <TranslateTransform3D OffsetX="1" OffsetY="0" OffsetZ="0"/>
                              </Transform3DGroup>
                         </PerspectiveCamera.Transform>
                    </PerspectiveCamera>
               </Viewport3D.Camera>
               <Viewport2DVisual3D>
                    <Viewport2DVisual3D.Transform>
                         <RotateTransform3D>
                              <RotateTransform3D.Rotation>
                                   <AxisAngleRotation3D Angle="0" Axis="0, 1, 0" />
                              </RotateTransform3D.Rotation>
                         </RotateTransform3D>
                    </Viewport2DVisual3D.Transform>
                    <Viewport2DVisual3D.Geometry>
                         <MeshGeometry3D 
                              Positions="-1,1,0 -1,-1,0 1,-1,0 1,1,0"
                              TextureCoordinates="0,0 0,1 1,1 1,0" 
                              TriangleIndices="0 1 2 0 2 3"/>
                    </Viewport2DVisual3D.Geometry>
                    <Viewport2DVisual3D.Material>
                         <DiffuseMaterial 
                              Viewport2DVisual3D.IsVisualHostMaterial="True" 
                              Brush="White"/>
                    </Viewport2DVisual3D.Material>
                    <MediaElement Name="ME1"
                         Grid.Row="1"
                         Stretch="Uniform" 
                         StretchDirection="Both" 
                         Source="D:\Yasir\Multimedya\Videos\Six demiyen çocuk.flv"/>
               </Viewport2DVisual3D>
               <ModelVisual3D>
                    <ModelVisual3D.Content>
                         <DirectionalLight Color="#FFFFFFFF" Direction="0,0,-1"/>
                    </ModelVisual3D.Content>
               </ModelVisual3D>
          </Viewport3D>
            <MediaElement Name="ME2"
                    Grid.Row="1"
                    Stretch="Uniform" 
                    StretchDirection="Both" 
                    Source="D:\Yasir\Multimedya\Videos\Six demiyen çocuk.flv"/>
      </Grid>
</Window>

I benefit from here to make my sample..

Thanks advance. Please help me