Frames Missing When publish live video to fms server

I am creating flex mobile application , that allows people to connect using a android camera and microphone,then recording video from android camera to Flash Media Server(FMS) 5 starter using adobe flex but when I play the recorded live video from FMS it's missing some frames. I have set the camera.fps to 30 but when I trace out the currentFPS for camera  30 and  netStream's currentFPS  returns low value, usually falls between 2 and 5 (high 1280X720),15 and 20(medium 640x480),25 and 30(low 320X240).where netStream is the object of the flash.net.NetStream class