Free REALPLAYER 2 Matroska Fast Convert, as its name, is free and can be used to convert REALPLAYER to Matroska. It is a good program for you if you want to convert REALPLAYER to Matroska. . The interface is really simple, so it's easy-to-use. You can master it even without any help. It can convert at superfast speed and the converting result is relatively good. It is a professional REALPLAYER to Matroska converter.