I used the Kodak Zi6 for this. to be honest I am not sure if i could have doner it on the Zi8. I will wait for the firmware update before i decide what I think about the Kodak Zi8.
I managed to use the same set of Kodak rechargeable AA batteries for the whole week. I am not sure the internal Zi8 battery would have coped. I still use the Zi6.. See what you think of the footage to come. :)