WPF MediaElement stops playing if moved to other screen

c#, mediaelement, multiscreen, wpf

Solution

I've found a workaround, disabling hardware acceleration in window rendering seems to solve the issue:

using System.Windows.Interop;
...

    protected override void OnSourceInitialized(EventArgs e)
    {
        HwndSource hwndSource = PresentationSource.FromVisual(this) as HwndSource;
        HwndTarget hwndTarget = hwndSource.CompositionTarget;
        hwndTarget.RenderMode = RenderMode.SoftwareOnly;
        media.Play();
        base.OnSourceInitialized(e);
    }

I can't perceive any difference in performance, and the problem doesn't appear in any test...

Problem

I'm experiencing a very strange problem with MediaElement that seems to be related to multi screen environment: occasionally (I can't replicate the problem each time) MediaElement stops playing when I drag the window it's in from a screen to other. This strange behaivor happens also with a very basic code like: ``` public MainWindow() { InitializeComponent(); } protected override void OnSourceInitialized(EventArgs e) { media.Play(); base.OnSourceInitialized(e); } ``` and ``` <Window x:Class="Test.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525"> <Grid> <MediaElement LoadedBehavior="Manual" Name="media" Source="C:\Users\Maurizio\Desktop\Pulp Fiction.avi"/> </Grid> </Window> ``` Has anyone experienced (and eventually solved) any similar problem?

Original source