[ffooky]

If you mean you want to convert AVI (DivX, XviD) to (S)VCD/DVD then Toast 7 is what you need, though it is of course not free.

The best free (well, shareware) option is ffmpegx <http://homepage.mac.com/major4/>. If you have the DivX/Xvid components <http://people.ee.ethz.ch/~naegelic/index.php> installed in /Library/QuickTime you can use the DVD ffmpeg Quick Preset, if not you'll need to use the DVD mpeg2enc one. Whichever preset you do use, I'd advise you to skip through and check the converted files all the way to end before burning.

If you do have the components above installed and the file plays in QuickTime, you can *probably* use Toast 6 but the encoder is much improved in 7. Check the file with VLC first to check which audio codec was used as, if it was AC3, you'll need to install the QT AC3 component as well <http://www.insaneness.com/ac3.html>.