Hi.
dvdauthor usually takes an xml file as its argument, not the mpg file you're trying to make into a DVD. Something like:
Code:
<dvdauthor dest="DVD">
<vmgm>
</vmgm>
<titleset>
<titles>
<pgc>
<vob file="final.mpg"/>
</pgc>
</titles>
</titleset>
</dvdauthor>
would create a DVD filesystem in ./DVD from 'final.mpg'.
Dave