Okay, so I just upgraded from a MacBook Pro to an iMac. The iMac is infinitely better in every way (obviously) and AfterEffects works fantastically. The only issue is that when I am editing and I am selecting a part of the video to cut, I try and render it and the video renders from the beginning, and once rendered, plays from the beginning. I am trying to edit a long video, so when I'm at the 13 minute mark, it takes ages to finish editing as I have to sit through the whole thing to make sure I got it right. All I need to know is how do I get it to render from where my marker and line are and play from that point? It never used to happen on my MacBook Pro.