E-famous Internet-person TotalBiscuit has an audio interview up with Swen Vincke from Larian Studios. They talk about both Divinity: Original Sin (first half) and Dragon Commander (second half). There's no video of the interview per se, but there is footage from both games. You might as well just open it in a tab and listen to the audio like a podcast or something. It runs for 28 minutes so crack open a cold one and relax.