AVI (176 x 144) 8.00fps

GSpot says the video codec is DivX 4 (OpenDivX), and the audio is PCM Audio 8000Hz 128 kb/s (1 chnl) mono.

The audio takes up about 60% of the file size.

10 seconds recorded results in about a 310 KB file in my test.

Note: The N800 camera is rated less than one MP IIRC. This is never going to be a replacement for a real camera or video camcorder, but useful none the less.