Aww, this thread is dwindling a little.
I too am guilty of not contributing a great deal..
I did use the D3300 to do a few video clips this morning. I posted in the Video section, but maybe I should have posted it here instead. It probably would have been better of in this section, as nobody seems to reply over in the video forum.
In movie settings, I turned manual movie setting to ON. I did not realise it was possible to alter so much, even the ISO is manually adjustable in movie mode. It is even possible to alter these settings while recording is in progress. Pretty happy with the video that came out of the camera.