To resolve the problem with the MPEG 2 decoder, I recommend upgrading to the latest version of Digital Media Converter, which you can find here: https://www.deskshare.com/download_details.aspx?ID=18 This is a free upgrade for all owners of Digital Media Converter 2.x. Try to play the AVI file that is not rendering using the Windows Media Player. Often, this will solve the problem by automatically downloading the correct decoders. It may also be helpful to upgrade Media Player to the latest version, which can be downloaded free of charge from Microsoft here: https://www.microsoft.com/windows/windowsmedia/player/11/default.aspx