I have made a movie which is 55 min. long.  I want to burn it to a dvd and to do that I have to use the 'save', 'burn to dvd' option in the top right task bar.  This takes 2 hours to save and another hour to 'encode' and burn to dvd.  Am I doing something wrong or does my computer just not have enough gusto for this process?  Any ideas?