How to get the thumbnail of a recorded video - windows phone 8?

Question

I've used CaptureSource() to record a video like in this Topic How to record video in a camera app for Windows Phone, but I can't get the thumbnail of the recorded video.

Answer 1

Here is the solution:

[...]

// Add eventhandlers for captureSource.
captureSource.CaptureFailed += new EventHandler<ExceptionRoutedEventArgs>(OnCaptureFailed);
captureSource.CaptureImageCompleted += captureSource_CaptureImageCompleted;

[...]

captureSource.Start();
captureSource.CaptureImageAsync();

[...]

void captureSource_CaptureImageCompleted(object sender, CaptureImageCompletedEventArgs e)
{
 using (IsolatedStorageFile isoStore = IsolatedStorageFile.GetUserStoreForApplication())
  {
    System.Windows.Media.Imaging.WriteableBitmap wb = e.Result;

     string fileName = "CameraMovie.jpg";
     if (isoStore.FileExists(fileName))
         isoStore.DeleteFile(fileName); 

     IsolatedStorageFileStream file = isoStore.CreateFile(fileName);

     System.Windows.Media.Imaging.Extensions.SaveJpeg(wb, file, wb.PixelWidth, wb.PixelHeight, 0, 85);

     file.Close();
 }
}

UPDATE : Give the user the possibility to take the thumbnail when he want

Add an Tap event to viewfinderRectangle

<Rectangle 
    x:Name="viewfinderRectangle"
    [...]
    Tap="viewfinderRectangle_Tap" />

Call captureSource.CaptureImageAsync(); in that Tap event

private void viewfinderRectangle_Tap(object sender, System.Windows.Input.GestureEventArgs e)
{
 captureSource.CaptureImageAsync();
}