File extension: DVR-MS. File type: Recorded Television File. The DVR-MS file type is primarily associated with ‘Media Center’ by Microsoft Corporation. In Microsoft Windows XP Media Center Edition, Microsoft has introduced the *.DVR-MS (DVR) file format. Similar in format to *.ASF, the *.DVR-MS (DVR) file enhancements allow the creation of key PVR functionality, including time-shifting, live pause, and simultaneous record and playback. These files now use a .WTV extension. Primary association: Media Center. Company: Microsoft Corporation