Please make sure that you are using the latest version of Digital Media Converter. If the latest version of Digital Media Converter finds the Free MPEG2 Decoder installed on your computer then it will use it by default. You can download the latest version of Digital Media Converter from: https://www.deskshare.com/audio-video-converter.aspx You may still need to disable all other MPEG2 decoders. Digital Media Converter lists all available decoders under the Compatibility tab of the Settings dialog box. Simply uncheck all other MPEG2 decoders present in the list.