converting to DVD format takes a while, yes. Video and audio processing (decompression and recompression) is really CPU intensive.
Nero can convert .avi to DVD format. It took about 1 hour to convert a 700meg divx AVI file to DVD format. The actual burn took a couple minutes.
Primary: English Mild
On tap: Pale Ale, Lancelot's Wheat, English Brown Ale, Steam Beer, HoovNuts IPA
Bottled: MOAM, Braggot, Raspberry Melomel, Merlot, Apfelwein, Pyment, Sweet mead, Cabernet
Gal in 2009: 27, Gal in 2010: 34, Gal in 2011: 13, Gal in 2012: 10