How do I remove video noise & grain in iMovie '11? I'm attempting to remove some video noise/grain in iMovie 11 taken in low-light but haven't found a way to do this within iMovie itself. I've looked for plugins but the only ones I've found don't have free trials and I don't trust paying for software if I can't be assured it will work.

Is there a way to remove video noise/grain in iMovie?
Unfortunately iMovie doesn't take plugins. 

Best bet is external software OR Final Cut Pro 7 has numerous plugins that reduce noise and grain, but they are all very expensive.