This week we've been working on an episode which involves the sheep and the pigs having a race around a track on BMX bikes!
To make it look like they're going really fast we are shooting the bikes against a green screen (this enables the visual effects team to cut a moving background into the shot, which we shoot on a separate set, to make it look like the cyclists are whizzing past.)
In the picture below you can see Shaun and one of the pigs head to head, and the green screen in the background.



