SnatchIt! video screen capture software takes snapshots of MPEG/AVI/WMV/DivX files to create high-quality thumbnails.
Features include the ability to navigate frame by frame to capture a frame of video. It has an option to auto-trim any black borders around your videos.
The thumbnail creator allows you to copy entire frames or just the snapshot straight to the clipboard for easy transfer to Photoshop or any other image editing software.
It also has an auto-thumbs feature which will automatically make a thumbnail at periodic set intervals during the video file. | 
