As it turned out, it wasn’t quite so easy. There were slight differences in timing and tempo which meant I had to alter Gwenatav’s part slightly, cutting out moments of silence so the two would sync up. Since choppy video would be unacceptable, I had to do my best to match up what I could – compounded by the fact that Gwen’s video was recorded in 25fps and Julien’s at 30fps. That said, I’m happy with the results...
Which you can hear at Geeks Are Sexy. Link