WTV converter stands for Windows TV which is also known as Windows Media Centre. It records programs of the television which are usually stored in the container format WTV file in its new WTV format which is encoded by using the MPEG-2 and audio using MPEG-1 or you can say Dolby Digital AC-3 which can be opened and played back within the Windows Media Centre along with Windows Vista and the more other versions of Windows Vista. WTV format files cannot be played on Windows XP, Windows 2003 and Windows 2000.