As is known to all, VirtualDub is a free and all-powerful video capturing and processing utility for Windows. Although the lack of advanced editing features, it is still proficient in video resizing, cropping, filtering, re-compression and more. Without an open-and-shut interface, there may be obstacles for novices when performing some actions in it like cropping a video properly. To facilitate cropping video with it in a valid method, the following goes onto detail a guide on how VirtualDub crops video, accompanying with an introduction of VirtualDub alternative - Joyoshare Media Cutter.