I searched the forums but could find nothing about this..... I am wondering if anyone knows how long the iPhone 3GS 16GB can record video for. I want to set up a hidden camera to catch my roommate. If you do know here are my questions.... 1) Does the video recording ever stop if the screen is off or the phone is locked? 2) How long can the iPhone 3GS 16GB record video for? 3) How long can the iPhone 3GS 16GB record video for while plugged in? 4) Besides running out of memory, is there any reason why the video may stop recording?