I have several large .wmv files that I want to author to a DVD. After reviewing many guides and articles I am still unsure of what is meant by DVD format versus MPEG-2 format. What kind of video files do I need to have when using an author like Sonic myDVD or TMPGDec DVD Author, MPEG-2 or VOB, BUP, IFO? Do these files need to be demultiplexed or multiplexed? If demultiplexed, what file(s) should be added into the authoring program when inserting a video. Since I have TMPGDec DVD Author, should I be using their encoder as well to make sure the files are compatible? Which encoding software would you recommend? I have .avi, mpeg, and wmv files to convert. Thanks for any help you can give.