I have a mobile (Samsung D900). The problem is that I have no control over the video time recording in it. It records at different rates stopping recording suddendly and save the clip. e.g. sometimes it records for more than a minute,and at other times it records for few seconds. Nowadays,it records for few seconds. I don't understand this and don't know how to sort out this problem. Is it possible to make it stay recording for longer time? what controls this process?