motion detection settings, recording interval

Have both Eye4 for android and on PC.
Have  your outdoor dome type camera, is there a way to have the camera on but only record when motion is detected?
I have the motion detection triggered, the recording interval length says 60 minutes, I hear an audio alarm, whe i look at the video record viewer there are several files with different avi files sizes and each with different record times from 5 sec long to 1 hour long.
Also in the settings what is the trigger GPI 1, GPI 2, GPI 3, GPI 4, what do these mean?

also does the software need to be running all the time? if the computer goes to sleep, I assume the program stops running?

Hi, Eye4 have windows PC,  andriod phone and iphione versions,
APP download links: https://www.vstarcam.com/software-download
If you want to record only motion detection triggered videos, please install SD card first, then go to camera settings--->TF card settings--->set record mode as " motion detection recording".