I have almost finished a short film (shot on DVX100) but we ran out of daylight the last day of affordable cast & crew. For the opening credits, I want to add another 60 seconds of the lead female character walking down a wooded road, but the existing 30 seconds of footage has her walking over patches of snow. Continuity requires that the other 60 seconds show something similar. Let's assume Mother Nature won't cooperate and drop some more snow the day before our next shoot.
Any ideas on how VV3 (or 4, I'm waiting for the box) can be used to create, or suggest, patches of snow in the background of the new 'woods' footage we will be filming?