Overlay Keeper
From MediaLooks Knowledge Base
MediaLooks Overlay Keeper is a useful utility that helps when you need to make a screen shot of a video window (either with Alt+PrtScn, with Screen Capture DirectShow Filter, or other tool).
When the overlay is used to paint the window, creating a screenshot is not possible. This utility should be run before creating the video window. In this case, the utility will hold the overlay and making screenshots from the window will be possible.