XnView Software

Having mixed foto and video files in a folder, representing them in thumbnail view is not very clear. As I see, the only difference between fotos and video is for videos in a light blue line where file name is displayed. A better thumbnail presentation would be, to frame videos in a film strip frame like in other grafic viewers or in windows7, view symbols. Or is that feature already implemented in the software? If not, it may be a suggestion to the makers of Xnview.
Thanks