(I'm re-submitting this because it expired before I could act on it.) I have a number of video files I want to burn fo a DVD suitable for a conventional player. Those files are available in both MPG4 and MPEG2 formats. Is it necessary to convert to another format for DVD use and if so, which format? Also, what software is easiest/cheapest/most convenient for DVD burning? And if some additional format conversion is needed, would that software carry it out? Thanks.