sample code for using ih264venc.h library

Hi, i want to get high resolution (720p) frames from analog camera and save them to external memory with using Beagleboard Xm. I read the lines in ih264venc.h library but could not start writing my code. By knowing that this is my first experience in CCS (very newbie), how can i start writing my code? I could not find any example code for ih264venc.h .