For DVD's to p,ay on "standard" home DVD set-top DVD players the discs must be formatted in a very specifig manner as described here :-
http://stream.uen.org/medsol/dvd/pages/dvd_format_filestructure.htmlThe basic video format used in DVD discs is normally Mpeg2 (although you can buy some home players that will play DivX now) and therefor any video format which is not Mpeg2, suc as AVI/DivX/XviD/WMF/Mpeg4 etc will need to be "transcoded/recoded.
As you know this can be a time consuming process - I don't think that any particular any particular application is faster than another for this process as it's primarily a CPU intensive task - obviously fast discs with large caches will minimise delays and the more memory the better - but the easiest way to speed up the process is using a fast CPU.
As well as the video stream recoding the DVD authoring software needs to produce the DVD file structure noted in the above link but the majority of the time taken is the recoding.
Some really good guides here :-
http://www.afterdawn.com/guides/And a pretty good (free) - at least good enough for me to have donated for it - conversion program "The Film Machine" here :-
http://members.home.nl/thefilmmachine/Hope this helps.....
EDIT: - TFM will even burn the DVD for you
