Mpg video pixelated when it's in WPF application (OS:Windows 7 x 64 bit)

Question

I have written an WPF application to play mpg video long time ago. The video (in mpg format) can be played smoothly (without pixelization) in the OS - Windows XP. After I changed to new laptop with windows 7, x64 bit.  The video (in mpg format) become pixelated when it's played. When I used Windows Media player to play the video, there's no pixelization. Is there any wrong on the compatiblity between Windows 7 and WPF (VS 2010 Premium)?

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Jason

Answer 1

These are Xaml codes I used:

<Window x:Class="MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="700" Width="1200">
    <Grid>
        <WrapPanel Height="46" HorizontalAlignment="Left" Margin="155,536,0,0" Name="WrapPanel1" VerticalAlignment="Top" Width="318">
            <Button Content="Play" Height="54" Name="Button1" Width="88" FontSize="16" />
            <Button Content="Stop" Height="54" Name="Button2" Width="76" FontSize="16" />
        </WrapPanel>
        <Canvas Height="418" HorizontalAlignment="Left" Margin="167,76,0,0" Name="Canvas1" VerticalAlignment="Top" Width="770">
            <MediaElement Canvas.Left="156" Canvas.Top="56" Height="288" Name="MediaElement1" Width="470" Source="D:\SonyCameraFiles\MOV05236.mpg" LoadedBehavior="Manual" />
        </Canvas>
    </Grid>
</Window>

These are .net code I used:

Class MainWindow 
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles Button1.Click
        MediaElement1.Play()
    End Sub
End Class

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Jason

Answer 2

I wanted to share some photos on video quality played in WPF and played through Windows Media Player,  there's always error prompt out -  'response.Size' is null or not an object after I selected the photo to add.

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Jason

Answer 3

any one can help?

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Jason

Answer 4

After I downloaded K-Lite codec for video, it can solve the issues where all the 4 videos which played simultaneously can be played without pixelated issue at initially. after I closed the application, and run it again to play 4 videos simulataneously, the same problem come back again. Any one can help?

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Jason