rendering repeat
 

This is not a complaint just a question of why. I use VMS 10 HD platinum production suite and am wondering why when I click onto make movie it performs perfectly and takes an hour to render an ll min. video. Ok that's understood, but why when following instructions, I send it to DVDA 5 it takes DVDA another hour to render it again before burning the Blu-ray disc. I'm just wondering why the rendering twice?