WVX are files used to link WMV files. A document of this format is a plain text file that contains URLs to the actual media file. The file can later be called up in HTML using the "href" attribute, such as <a href="movie.wvx" type="video/x-ms-wvx(> Movie </a>.

WVX are files used by Windows Media Player. Sometimes the file is written in XML markup, which contains a list of links to the files to be restored.