View debug log

1. Use the Debug version of the filter. Install it as usual or replace the files of the previously installed version.
2. Select MPC Video Renderer in the video player settings.
3. Download DebugView, unpack the archive and run it.
4. Start playing the video file and see debugging information in the DebugView window.

PS: If you have Visual Studio installed, you can get more debugging information about how Direct3D 11 works.