Let the hive mind of Engadget get that for you.
"I need help! I want a small pocket camcorder but I'm not sure which one to get. I don't want to fall into the hype of the Flip because I worry two hours won't be enough. What should I be looking for when considering a small camcorder and where can I get a good quality one with expandable memory? Thanks!"
The lines I'm referring to do run horizontally across the screen, but they are usually counted vertically.
http://www.google.com/search?q=720p+vertical
There are definitely however, 720 of them. Sorry for any confusion caused