Could anyone shine a light on this question for me? If i remember correctly i saw quicktime do a render with all 8 cores going full bore at an apple seminar once. Why do i have to wait for an hour for a render being processed by 1 core at a time (the active core switches every 3 seconds) Maybe it's render settings dependant? image added to illustrate the annoyance. (imagine "estimated time remaining: About two hours" underneath the progress bar)