The video has portions shot with the Pureview Camera to demonstrate how good the optical stabilization works (and from what Dan tells me it works really good). The video has come into question when a reflection of the van following the bicyclist to shoot the video suggests the footage was shot with a professional video camera instead of a Pureview Camera.
While our first thoughts were that Nokia was using a Lumia 920 mounted to a jig similar to what was used to shoot the comparison videos we saw during the presentation. We have seen similar rigs used before with the Kurt Vile video that were shot with a Windows Phone so it wasn't a stretch to think what the videographer was holding was a mounted Windows Phone.
Well Nokia has clarified things a little.
The Lumia 920 pictures in this post were taken using prototype hardware and software, and then reduced dramatically in size. In addition, the OIS video, above (video), was not shot using the Lumia 920.
All of which makes sense as well. Check out the video below and decide for yourselves.
Source: Nokia Conversations; Thanks to everyone who tipped us on this!