You’ll need a rooted Nexus One running CyanogenMod CM5.0.8test3 at least, and while there’s no support for Froyo just yet, they’ll be adding support fairly soon we hear. The more people develop this kind of thing, the more it will become something that may actually look good, but it goes a long way in helping make sure there is a semi-decent camera around to film major events as they happen. The video on my Palm Pre is the best of any phone I’ve ever had, but the quality is almost as good as my Lumix TZ5.”]
Source: https://gizmodo.com/nexus-one-shoots-720p-video-after-hack-5558957