Here are the durations of video, in minutes and seconds, that can be recorded with a Nokia N93, using the standard phone memory:
30 fps 1:59
15 fps 3:56
30 fps 7:20
15 fps 13:46
This explains why my phone always stopped recording after about 2 minutes. You need to upgrade the miniSD card to 2 GB to get the advertised 90 minutes total record time, with 60 minutes at one shot.
I'd like to try one of those.
Next up, I'll try recording at some of these other settings. I've been using TV MODE 30 fps exclusively. That gives you 640 x 480 video.