HowTo: Install Skype desktop on Windows 10 (for older webcams)

On Windows 10, Microsoft (they’ve acquired Skype some years ago) provide a Windows Store app for Skype, however Universal Windows Platform (UWP) apps like that one don’t support older webcams (even the ones embedded in not-that-old laptops).

Unfortunately, Microsoft hasn’t bothered to provide some frame grabber driver to bridge with DirectShow-based etc. older webcams that would allow modern UWP apps to work with such older webcams that do function fine with classic (Win32) applications, provided their classic Windows drivers are installed.

What’s worse though is that although Skype provides a Windows desktop application download at their website (https://www.skype.com/en/get-skype/), when that one is launched on Windows 10 (probably that is the can on Windows 8 too), it just shows a message that one should use the respective Store app and takes one to the respective Windows Store webpage. They haven’t bothered to consider all those users that don’t have a supported webcam on UWP and force them to move to the Skype UWP-based Store app. Note that they could have placed the classic (Win32) Skype application on the Windows Store too (which now supports deployment of such applications via a technology called Desktop Bridge), but I don’t think they’ve considered providing that option to the user either.

So a workarround I had to do on my laptop was to trick their desktop application installer into thinking it was running on Windows 7. To achieve this can right click the .exe file of the installer and select “Properties” (should be the last option at the popup menu shown).

Then, from the “Compatibility” tab select to run in compatibility mode for “Windows 7”. Press OK to close the dialog and just run the installer again, this time it will proceed fine to install the desktop application for Skype which should work with your older webcam, provided you’ve installed the camera drivers at your system. If it still doesn’t work, checkout the webcam diagnostics tool from http://noeld.com/programs.asp?cat=video (and also try webcam with the classic Win32 AMCap application provided there to see if it does show a video feed or not).

Fix: compile CSpeex audio codec at Silverlight 4 RC+ and Silverlight 5

Just added an issue to CSpeex project – http://cspeex.codeplex.com/workitem/18209 – with some fixes to make it compile for Silverlight 4 RC and higher (was for Silverlight 4 Beta).

1) at "MainPage.xaml.cs", replace with this method implementation:

private void TakeSnapshot_Click(object sender, RoutedEventArgs e)
{
  if (_captureSource != null)
  {
    // capture the current frame and add it to our observable collection
    _captureSource.CaptureImageCompleted += (source, eventargs) =>
    {
        _images.Add(eventargs.Result);
    };

  //”ImageCaptureAsync" method replaced by "CaptureImageAsync" at Silverlight 4 RC
    _captureSource.CaptureImageAsync();
  }
}

 

2) at "StreamAudioSync.cs" do this small change:

protected override void OnFormatChange(AudioFormat audioFormat)
{
  if (audioFormat.WaveFormat == WaveFormatType.Pcm)

  //”PCM" renamed to "Pcm" at Silverlight 4 RC (after SL4beta)

{
…

 

Note that the CSpeex-SL project won’t load if you don’t have Silverlight 3 SDK installed. After loading you can open up properties of that project and of SLAudioDemo one and set the target to Silverlight 5 from Silverlight 3, then save those two projects and rebuild the solution.