what is a vdf file
File type specification: Plugin, addon file type. The vdf file extension is associated with the VirtualDub, a popular video encoding and decoding utility. A vdf file is a filter plug-in. Filter plug-ins are used to add additional features or support to the VirtualDub.VirtualDub filters can be installed to VirtualDub by copy *.vdf files into a plugins sub-folder in the VirtualDub folder.he vdf file extension is associated with the VirtualDub, a popular video encoding and decoding utility. A vdf file is a filter plug-in.