Image by Image is a video player (for both AVI and WMV formats) that lets you view scenes, as its name suggests, image by image. It is very simple to use, and completely free.
You only have click on the "Open Button" option to open a video file, click on "Image by Image button" to view it frame by frame, or "Normal Speed Button" to watch it normally. A different player, very small in size, that places no additional demands on your system.