I'm new to encoding DIVX, so I hope I can get some help. I have several file sizes that I would like to encode so that they will either take up the entire width of the screen (widescreen movies/tv shows) or the entire screen (regular 4:3 sized tv episodes). The sizes are----
640x368, 640x352------these are obviously widescreen
576x432------these are the 4:3 tv episodes

What I'd like to know is how to scale these sizes up. Do I use a 16:9 ratio for the widescreen files and add 16 pixels to the width and 9 to the height for however big I need the files to be to keep the aspect ratio correct ? And in the same token, for the fullscreen files, do I add 4 pixels to the width and 3 pixels to the height to keep the ratio correct ? Thanks.