I’m processing HD video from this weekend’s visits to my grandchildren in Lynn. All of the projects are about the same size. I copy the raw clips from my MacBook Air to Merry’s new 13″ MacBook Pro, and fire up iMovie on each machine. On my machine, iMovie says that it will take 59 minutes (which turns out to be 90+). On hers: 23. My first reaction is the typical geek’s knee-jerk response: it’s time to upgrade my laptop to something more powerful. My second reaction: that’s absurd. Most of the time, my MacBook Air is quite fast enough. What I really want is a Mac Pro MB535LL/A in the cloud, available on demand…. (Well, that and easier batch support in iMovie.)