VirtualDubMod is an OLD Windows matroska video editor based on VirtualDub
Still a LOT of downloads per week at Sourcefourge (Thousands!)Description
VirtualDubMod is based on VirtualDub by Avery Lee. Born as a unification of several modifications, new features have been added including support for the matroska format. This project has been discontinued since 2004-2005.
http://sourceforge.net/projects/virtualdubmod/